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The Benefits of a Central Heating System at Home

In countries with harsh winters, like Canada, central heating systems are a must. Central heating is a system where warmth is generated in a central location and distributed throughout a building or home.

While it may not be the most affordable option for Canadian homeowners, this type of home heating system has many benefits that easily outweigh the initial upfront cost. We’re here to break down the benefits of centralized heating and why it’s the best option for your home.

Read on to find out more.

8 Advantages of a Central Heating System

    1. Enhanced Comfort

Some Canadian households experience unbalanced heating from room to room during the winter season. Usually, this issue stems from an incorrectly sized heating system; its size and output can’t keep up with the house’s layout, producing inefficiencies.

You won’t have to worry about this issue when you switch to central heaters—these ensure all nooks and crannies of your home are heated evenly, regardless of the outdoor temperature.

    2. Improved Energy Efficiency

Annual fuel utilization efficiency (AFUE) is a rating system that measures how furnaces and boilers burn fuel efficiently to heat a home. Central heaters with a gas furnace or boiler system have an AFUE rating of 90% and 85%, respectively. These values indicate that every time a central heater burns fuel, only 10% and 15% of energy turns into waste!

    3. Easy to Control

A centrally heated home’s temperature is easier to control and set with a programmable thermostat. This allows you to regulate the entire home’s temperature without having to go from room to room to turn on, turn off or regulate the heat. It also helps optimize energy usage!

A woman approaches a thermostat to change a home’s temperature

    4. Reduced Noise

Unlike individual space heaters or window units, central heating systems operate quietly, minimizing disruptive noise levels in the home.

    5. Better Air Quality

Central heat systems often incorporate air filtration and ventilation components, effective removing dust, allergens, and pollutants from the air. This results in cleaner and healthier indoor air, reducing the risk of respiratory issues and improving overall well-being for occupants.

    6. More Cost Savings

While central heating systems are initially more expensive than other types, they can help you save money in the long run. The energy efficiency of central heaters lowers energy consumption, thus reducing your expenses.

    7. Smart Feature Upgrades

Your centralized heating system could be compatible with smart devices like a smart thermostat, energy usaging monitoring, and remote access controls. These upgrades offer convenience and customization options, allowing homeowners to easily adjust settings, optimize energy usage, and monitor system performance from anywhere via smartphone apps or web interfaces.

    8. Increased Property Value

If you’re considering selling your home, central heating can increase the value of your property. Using your central heater as a selling point will attract buyers looking to save money without sacrificing comfort.

Types of Central Heating Systems

There are three major central heating systems that are widely used in Canadia:


Furnaces are the most common type of centralized heating system in Canada. They are also the oldest residential heating system, which used to be fuelled by coal and wood. These days, furnaces are powered by natural gas, oil, or electricity.


Boilers are another type of centralized heating system. They work by heating water and circulating the hot water or steam through a network of pipes to different parts of your home. The hot water or steam is then used to heat the rooms in your home.

Typically, the boiler sits on top of the furnace in the basement. The two systems share a flue, which is a pipe that carries exhaust gases out of your home. Boilers are often powered by natural gas or oil. They’re less common than furnaces, but are gaining popularity because they are generally more energy efficient and last longer, but are also more expensive.

An outdoor heat pump unit is mounted on a steel stand to prevent snow from entering its chamber.

Heat Pumps

A heat pump is more eco-friendly than other central heating systems because it doesn’t burn natural gas or any fuel to warm your home. It works by transferring heat from the air outside into your home. In the winter, it brings warm air into your home, and in the summer, it removes warm air from your home.

Install a New Central Heating System Today!

A central heating system can be a great addition to your home if you live in a region that experiences very cold winters. While they may be expensive to purchase and install, they offer many benefits that outweigh the initial cost.

LG Home Comfort is one of Ontario’s top providers of professional heating and cooling solutions. We’ll install, repair, and maintain your central heater to ensure it stays efficient and durable for years to come. Our team of expert technicians and are ready to offer the support you need—we even offer same-day services!

Get started with a free quote!

Frequently Asked Questions About Central Heat Systems

1. How much does it cost to install a central heating system?

The cost of installing central heating depends on the size of your home and the type of system you choose. Generally, expect to pay between $5,000 to $8,000 for the labour. It’s best to ask your contractor for a more accurate quote.

2. Is it worth installing a central heating system?

If you are concerned about your energy bills, installing a central heating system is worth the investment. These systems can be expensive to install but offer many benefits that will improve your quality of life. For example, a central heating system can help keep babies or small children warm and comfortable during the colder months.

3. How often should I have my central heating system maintained?

You should have your central heating system serviced at least once a year by a qualified technician. It helps ensure that your system runs efficiently and has no safety hazards. They can also determine if any parts need to be replaced before they become a bigger problem, which may cost you more money.

LG Home Comfort Furnace Maintenance Plans

4. How long does a central heating system last?

A central heating system’s average lifespan is about 15 to 20 years, depending on your system type and how well it’s maintained. If you live in an area with mild winters, your system may last longer than someone who lives in an area with cold winters because the central heater won’t be used as often.

Advantages and Disadvantages of a Two-Stage Furnace

You may have heard of two-stage furnaces because they’re a popular choice for homeowners looking to improve their home heating system. But are they worth it?

In this article, we’ll take a look at the advantages and disadvantages of this type of furnace to help you decide whether to invest in one for your home. We’ll outline which is more energy efficient, compare costs, and discuss how they meet household heating demands.

Ready? Let’s break it down! 

What Is a 2 Stage Furnace?

A two-stage furnace runs at low capacity during mild winter days, switching to a high setting when greater demand for warmth is needed. 

But how does a two-stage furnace work? 

Most of the time, it runs at a lower speed, slowly increasing according to the desired temperature to meet your home’s heating needs. This improves energy efficiency since the furnace does not always need to run at full power. As a result, two-stage heating also helps create steady temperatures in your home.

→ Read more: The Ultimate Guide to Buying a Furnace for Homeowners 

Single Stage vs. Two Stage Furnace

The main difference between single-stage furnaces and two-stage furnaces is their number of operating settings. As its name implies, a single stage furnace has one setting, known as “full power,” while a two-stage furnace has two, known as “low” and “high” power. 

Two-stage furnaces are more expensive up front, whereas single-stage models are generally cheaper because they have fewer parts to maintain and repair. With that said, two-stage furnaces make better use of energy because of their two motors, making it more cost-effective to run. 

Comparing Energy Costs and Long-Term Savings

A single stage furnace operates at full power when there is a need for warmth. It blasts out as much hot air as possible, which means that during the coldest months, it disperses the most amount of energy it can. This makes single-stage furnaces cost more on electric bills.

So what is a two-stage furnace doing differently? It comes down to having two settings that allow for more precision in how it responds to temperature changes. These allow it to gradually increase the heat from a lower temperature, leading to lower energy bills while keeping your space more consistently heated.

A woman adjusts the smart thermostat in the living room

2 Stage Furnace Advantages

What is a two-stage furnace bringing to your home? Here are six benefits: 

1. Low-Maintenance Electronic Commutated Motors (ECMs)

ECMs (electronic commutated motors) are a main feature of a two-stage furnace. Since these furnaces cycle on and off less frequently, the system has less stress. This means your furnace will have fewer breakdowns and an extended operating life.

2. Improved Energy Efficiency

Two-stage furnaces are well known for their energy-efficient features. By running at low capacity most of the time, they use much less energy than single-stage furnaces while maintaining good air circulation and heat output.

3. Reduced Operating Costs

Two-stage furnaces use less fuel and power, reducing operating costs over time. They also provide more consistent temperatures throughout your home without wasting energy or overworking your HVAC system. Plus, you won’t have to worry about repairs or frequent furnace replacement costs since they aren’t easily damaged.

4. Quieter Operation

Two-stage furnaces are quieter than single-stage furnaces due to their slower operating speeds and ECMs. Single-stage furnaces produce loud noises when they turn on and off. But with a two-stage furnace, these noises are much less noticeable and will not disrupt your day as much as they would with a single-stage furnace.

5. More Even Temperatures

Rather than producing large temperature fluctuations throughout your house, the two-stage system will keep temperatures steady. This provides added comfort and reduces cold spots due to drafts from windows or doors, all while keeping energy costs down.

6. Better Indoor Air Quality

The improved airflow from 2-stage furnaces can help keep dust and other irritants from circulating through your living space. This can help improve indoor air quality and reduce allergy symptoms for your family.

A child sleeps comfortably in a bed

2 Stage Furnace Disadvantages

Knowing the potential disadvantages of this furnace can help you decide when considering it for your home. Here are the 2 stage furnace disadvantages: 

1. Higher Cost

The initial expense is the most significant disadvantage of installing a two-stage furnace, as they often cost several hundred or even thousands of dollars more than a single-stage unit.

This price gap is due to the increased complexity of the operating system and the additional components needed for proper operation. These models also require special filters that may need to be replaced more frequently than single-stage filters. 

2. More Difficult and Expensive Repair

Because two-stage furnaces are more complex than their single-stage counterparts, they need specialized parts for repairs or maintenance. These components lead to higher repair costs and longer wait times before getting back up and running.

Additionally, because two-stage furnaces use multiple burners, they generate more heat than single-stage models. So, any repair work needs greater caution as it requires handling higher temperatures to complete the job correctly.

The Bottom Line: Is a 2 Stage Furnace Worth It?

Yes, a 2 stage furnace is worth it despite high upfront costs and complex maintenance. They are ideal for a large, multi-story home since they distribute heat evenly and reduce cold spots effectively thanks to their low and high heating capacities. 

Investing in a two-stage furnace means increased energy savings and greater comfort levels. Its advantages offset its disadvantages, making it a practical choice for those looking to save money and conserve energy.

→ Read more: The Ultimate Guide to Home Energy Rebates in Ontario

Get Comprehensive Heating Solutions at LG Home Comfort

Whether the debate between a “single stage vs two stage furnace” is still going on in your mind, it ultimately comes down to personal preference.

Weigh the pros and cons mentioned above, but keep in mind that improved efficiency, better heat distribution, and more consistent temperatures throughout your home are excellent reasons to upgrade from a single stage furnace to a two stage furnace.

LG Home Comfort makes the process easy. We’ll offer you a high-quality two-stage furnace and install it, too. Our expert HVAC technicians are the best in Ontario—we always get the job done right the first time and are available to help 24/7/365. 

Get started with a quote, call a member of our team today.

Can An Oil Furnace Cause Carbon Monoxide Poisoning?

Carbon monoxide (CO) is a poisonous, odourless, and colourless gas that may build up in a home with an oil furnace, resulting in dangerous levels in the air—it can even be deadly if enough of the gas accumulates in your home. 

The risks and dangers of carbon monoxide poisoning are real, meaning you should take steps to reduce your chances of being exposed to too much CO from your oil furnace. The health and safety of you and your family depends on it! 

This blog will walk you through how oil furnace carbon monoxide leaks happen, the warning signs, and explain how preventative furnace maintenance can help. 

💡 Read more: The Ultimate Guide to Buying a Furnace for Homeowners

Oil Furnace Carbon Monoxide Poisoning Explained 

Like other fuel-burning appliances—including boilers, gas stoves, and heaters—an oil furnace can produce dangerous levels of CO. It happens when the furnace is not vented correctly, when it’s burning fuel inefficiently, or when the burner becomes clogged.

Some carbon monoxide from your furnace is normal, as all appliances that burn fossil fuels produce a small amount of CO as a byproduct. This is expected and is not dangerous if the appliance is functioning normally.

However, oil furnace carbon monoxide poisoning occurs when the levels of CO in your home get too high, especially if it’s contained in a small area. In these cases, CO can quickly reach dangerous levels and cause symptoms of carbon monoxide poisoning.

The Canadian Hospital’s Injury Reporting Prevention Program (CHIRPP) recorded around 767 unintentional CO-related events between 2011 and 2023. Most happened during the cold seasons, with furnaces ranking as the fourth leading cause.

There are several reasons for this, which include:

  • Improperly installed and unmaintained furnaces
  • Wrong furnace size
  • Blocked ventilation systems 
  • Heating system malfunctions (i.e. cracked heat exchanger and exhaust pipes)
  • Age of furnace

A woman in pain massages her temples

Symptoms of Carbon Monoxide Poisoning 

In general, the maximum indoor safe CO level is 9 ppm over eight hours. 

Given how CO is a colourless and odourless gas, installing a carbon monoxide detector is the best way to monitor levels. There should be CO detectors on every floor of your home—including the basement—located within 10 feet of each bedroom.

Elevated levels of carbon monoxide from furnaces can lead to poisoning and the following symptoms:

  • Headaches
  • Dizziness
  • Nausea
  • Confusion
  • Fainting
  • Shortness of breath
  • Fatigue

In extreme cases, prolonged exposure at high concentrations can result in death. 

How to Spot a Carbon Monoxide Leak 

The key to preventing carbon monoxide leaks is being proactive. The warning signs indicating that your furnace may be leaking include: 

  • Soot or stain around the vent pipe on the outside of your home
  • A yellow flame burning inside your oil furnace (instead of a blue one)
  • The pilot light frequently blows out
  • Excess moisture on walls and windows near the oil furnace
  • Pets suddenly falling ill
  • An increase in headaches, nausea, dizziness, confusion, and fatigue (especially if they disappear after you leave your property)

As soon as you observe any of these signs, get your oil furnace inspected for carbon monoxide emissions by a qualified technician

Can Carbon Monoxide Come From a Furnace That Is Off? 

Technically, your unit won’t produce carbon monoxide if it’s off. 

However, your oil furnace may pull in some CO from other sources in your home like your water heater or gas appliances. This residual CO circulates throughout your house, especially if you have holes in your air ducts. It can then be distributed through your furnace ducts even if the leaks come from outside your system. 

So, no matter how well you maintain your furnace, there is still a risk if you have other sources of carbon monoxide in your home. Always check your appliances regularly to ensure they are functioning correctly and seal any air ducts that may be leaking.

Don’t Forget Your HVAC System 

Your HVAC system is also at risk of CO leaks if it’s not maintained properly. Though modern systems have safety features to shut off the system if CO levels become too high, these will only work correctly if the system is regularly checked and maintained.

Regular maintenance is critical in preventing furnace carbon monoxide poisoning, and this job requires the attention of professionals. Licensed HVAC technicians are experts in diagnosing and repairing potential issues in your heating and cooling systems. They’ll effectively clean vents, replace broken parts, and fix faulty wirings. 

DIY furnace repair is a bad idea, as it often creates new problems or worsens existing ones. However, you can do your part by keeping the area around your furnace clean, replacing air filters regularly, and keeping your eyes and ears open for signs of a furnace leak.

💡 Read more: The Ultimate Seasonal HVAC Maintenance Guide for Homeowners

A man installing a carbon monoxide detector on the ceiling

Tips to Prevent Carbon Monoxide Leaks 

You can prevent carbon monoxide poisoning by taking a few simple steps.

  • Have your furnace, boiler, and water heater serviced regularly by a qualified technician. While you can physically check your appliances for any visible damage, only a qualified technician can ensure that your furnace is burning fuel efficiently. They have the knowledge, tools, and experience to detect and repair any underlying issues.
  • Install carbon monoxide detectors in your home. Choose a detector that is certified for its smell, accuracy, and sensitivity. Replace your carbon monoxide alarm every five to six years or as specified by the manufacturer.
  • See to it that your air vents are clear and not blocked. Check your vents and the area around them for any blockage or debris. If you find anything that might be blocking airflow, carefully remove it or contact a qualified technician to do this.
  • Check your chimney regularly. It should be clean and free of creosote buildup, and the flue should be open. If you have a gas-fired furnace, check all your connections to ensure they are secure and there are no leaks.
  • Replace old appliances with newer, energy-efficient models. Newer furnaces and appliances are built with better combustion technologies that produce less CO. On average, you should replace them every ten years as they become less efficient.

Prepare For the Winter with Professional Furnace Maintenance 

Installing carbon monoxide detectors is a great start, but the best way to avoid dangerous CO leaks is with regular maintenance from LG Home Comfort

Our licensed technicians are available around the clock to inspect your oil furnace and make sure everything is running right. However, if you do encounter a potential leak, we’re only a call away to get the problem resolved quickly. 

An oil furnace carbon monoxide leak is no joke—be proactive by scheduling a maintenance visit today.

How Do Furnaces Work?

Living in Ontario means enduring bitterly cold winters, which is why reliable heating solutions are a must for every home. They start with a furnace. Yet, despite them being in every home, most people don’t know how they function.

So, how does a furnace work? How does a gas furnace work and is it different from how an electric furnace works? What about oil furnaces?

We’ll answer these questions and more as we break down the inner workings of a furnace, demystifying its operation and explaining the key components that make your home a warm and welcoming haven during the cold winter months. 

Let’s get into it! 

What Is a Furnace?

There are different types of furnaces depending on the fuel source and the efficiency rating.  The most common are gas furnaces, oil furnaces, and electric furnaces—they all heat air and distribute it throughout your home using ducts and vents.

Furnace fuel efficiency is measured by its Annual Fuel Utilization Efficiency (AFUE) rating, an indicator of how efficiently it converts fuel into heat. Higher AFUE ratings mean greater energy efficiency for additional cost savings and a reduced environmental impact.

But how do furnaces work to create this heated air? We’ll answer that next!

How Furnaces Work

All furnaces need a fuel source to heat and distribute warm air throughout your home. How oil furnaces work is similar to how gas furnaces and electric furnaces work—the type of burning fuel they’re using is the only difference.

Essentially, what happens is they draw in cold air, pull it through the ducts, heat it using their specific fuel source, and then circulate the resulting warm air to your home.

As such, regardless of what type you have, something has gone wrong in this process if your furnace isn’t working. That’s when we recommend calling the professionals to assess the problem in order to get your unit back up and running.

 A man removing the air filter from a furnace

Understanding Furnace Parts

How does a furnace work with so many parts? It’s a valid question. 

We’ll narrow things down to the main components in this section to give you a concise flow of how a furnace works to convert cold into warm air: 

  • Return Register and Duct: These work together to pull cold air from your home and store it inside the furnace. 
  • Air Filter: This small yet crucial part filters all sorts of airborne contaminants and pollutants.
  • Gas Valve Control: This part works as a monitor in gas furnaces and regulates the fuel pressure travelling to the burners.
  • Blower Chamber: This holds the furnace blower and blower motor together, which blows warm air through the supply ductwork.
  • Burners: These are essential to how gas and oil furnaces work; they’re responsible for creating fire by pulling fuel from a gas line or oil tank. 
  • Pilot Light or Electronic Ignition: Old model furnaces use a constantly running pilot light to prepare the furnace for work. Newer models use an electric ignition that receives a signal from the HVAC system when your home is ready for heating.
  • Flame Sensor: This small rod detects if fire is present in the burners. It shuts down the entire system when there’s no heat to protect you from potential gas leaks.
  • Heat Exchanger: This component safely transfers heat from the burners. 
  • Supply Duct and Register: This is where the heated air exits the furnace and enters your living space.

The Heating Process Explained

Now that you know the basics of how a furnace works, let’s dive further into the furnace heating process that keeps your home warm during colder months.

  • The cycle starts when a change has been made to the thermostat as this signals the furnace to turn on and ignite the fuel in the burner. 
  • The flames in the burner warm the heat exchanger, which transfers heat to the air passing through it. 
  • The blower fan then pushes the now-warmed air out into your home through your ducting and supply vents.
  • The return vents collect the cold air and recycle it. This process continues until the thermostat signals the furnace to shut down.

 A person adjusting thermostat settings using a smartphone app

The Role of Thermostats

How does a furnace work without a thermostat? If this is something you’ve been wondering, then we can provide a simple answer—they don’t!

Thermostats are the nerve centre of your home’s heating system. These devices control when and how much heat the furnace should deliver to meet the desired temperature.

A modern furnace paired with a smart thermostat can also:

  • Keep your home cozy and comfortable by regulating furnace output
  • Save energy and money by lowering the temperature when you don’t need it
  • Customize your heating schedule to fit your lifestyle with programmable features
  • Connect to Wi-Fi networks so you can control your thermostat from anywhere in the house with your smartphone 
  • Learn from your habits and optimize your heating patterns 
  • Protect your home from overheating by shutting off the furnace when it’s too hot

Stay Warm This Winter With LG Home Comfort

If you were looking up: “How do furnaces work?” “How does a gas furnace work?” “How does an electric furnace work?” or “How does an oil furnace work?”, then we hope this article answered all your questions.

LG Home Comfort understands the importance of having a warm and snug home. Whether your gas furnace needs a check-up, your electric furnace is acting up, or your oil furnace could use some TLC, we have the solutions you need. Our team of industry-trained technicians will keep your heating system working efficiently all season long!

We offer a range of heating services for your 360° comfort, including:

Get a quote today or call us at 1-866-530-5442 to learn more!

How Heat Pumps Work

Heat pumps are the unsung heroes of Canadian homes, keeping them cozy during chilly winters and comfortably cool throughout the warm summer. However, many people are unaware of how heat pumps work.

How does a ductless heat pump work? How does an air source heat pump work? How does a geothermal heat pump work? These are all common questions we receive from our clients.

The good news is that we’re here to help explain the inner workings of heat pumps, including specialized varieties. Ultimately, learning more about heat pumps will help you decide if one is right for your home.

Ready? Let’s get started!

What Are Heat Pumps?

Before we explain how heat pumps work, let’s first define what heat pumps are.

Heat pumps are mechanical systems that provide both heating and cooling in a single unit. They don’t generate heat directly, instead, they transfer heat from one area to another. They are known to be energy-efficient and are often powered by renewable energy sources, making them a top choice for people seeking cleaner and greener solutions.

The different types of heat pumps include:

  • Air-Source Heat Pumps (ASHP)
  • Ground-Source Heat Pumps (GSHP)
  • Geothermal Heat Pumps
  • Ductless Mini-Split Heat Pumps

To keep it simple, we want you to remember that while heat pump models vary in terms of heat sources and methods of heat exchange, the core principle—that they transfer heat energy from one place to another—will always stay the same.

Now, let’s break heat pumps down in detail:

The outdoor unit of a heat pump working in winter Image Source: Canva

The Components of a Heat Pump System

If you want to better understand how heat pumps work, it can be helpful to learn about their different components. They are as follows: 

  • Outdoor Unit: Air-source heat pumps have an outdoor unit that contains a set of coils (known as the condenser and evaporator) and a fan that blows outside air over the rings to begin heat exchange. 
  • Heat Exchanger: Ground and water-source heat pumps rely on an underground or submerged heat exchanger loop. It’s where the refrigerant flows and absorbs heat.
  • Air Handler: Indoor units also contain a set of coils (condenser and evaporator) and a fan that distributes the cool or warm air throughout the ducts.
  • Refrigerant: This substance absorbs and rejects heat as it flows throughout the heat pump system. 
  • Compressor: Manipulates the refrigerant’s temperature and pressurizes it to move around the system.
  • Reversing Valve: This switch reverses the refrigerant flow and swaps the operating system, changing it from heating to cooling and vice versa.
  • Expansion Valve: This metering device manages the flow of refrigerant and controls its pressure and temperature.
  • Condenser Coil: It releases heat into the air. 
  • Evaporator Coil: It collects heat from the air.

→ Note: The basic parts of a heat pump system are generally the same regardless of the type used, but there can be variations and differences in their design and operations. 

The Refrigeration Cycle & Heat Transfer Process

The refrigeration cycle generally remains the same across different heat pump systems. Here’s how this process happens in an air-source heat pump:

  • When the thermostat changes, the expansion valve pumps a liquid refrigerant through its coils.
  • The fan in the outdoor unit pulls air over the coils; these start to absorb heat from the air and expand as hot vapour.
  • The vapour moves through the compressor, increasing its pressure and temperature before flowing into the indoor unit’s coils.
  • The heat pump’s blower then pumps the heat through the air ducts to distribute it throughout your home.

Ground and Water Heat Pumps

Ground and water heat pumps work the same as air-source types. However, instead of having outdoor units, they have a series of pipes found underground or submerged in water. These devices also pump a liquid refrigerant or a cold water anti-freeze mix and are used to gather heat from the earth or a water source.

Ductless Heat Pumps

You may now be wondering “How does a ductless heat pump work?” It’s pretty similar, except they have individual indoor units serving specific zones.

Geothermal Heat Pumps

Now, how does a geothermal heat pump work? These can be understood as a subset of ground-source heat pumps, however, they use the stable temperature of the earth’s ground as the heat source or heat sink.

A woman adjusting the settings on her thermostat

Heating and Cooling Modes

When learning how heat pumps work, something else to understand is their ability to quickly switch between heating and cooling modes.

In heating mode, the heat pump absorbs heat from the outdoor environment or the ground, raises its temperature, and releases it indoors to warm your home. The process is reversed in cooling mode as the heat pump extracts heat from your indoor air and then releases it outdoors to cool your home.

This is made possible by the reversing valve, which directs the flow of refrigerant and changes the system’s operating mode as needed. So, whether you’re staying cozy in winter or enjoying a refreshingly cool environment in summer, your heat pump is hard at work.

Trust LG Home Comfort for Your Heat Pump Needs

We heard your questions—“How does a ductless heat pump work?” “How does an air-source heat pump work?” “How does a geothermal heat pump work?” “How does a mini split heat pump work?”—and hope we’ve answered them!

Now that you know how heat pumps work, the next step is buying one and having it installed in your home. The installation can be a serious job, which is why you should trust the experts at LG Home Comfort!

You can count on us for:

  • Expert Guidance
  • Quality Installation
  • Reliable Repairs
  • Exceptional Service

Contact us today for a quote or to learn more about our services!

Canadian Wildfires and Air Quality: 5 Tips to Manage the Effects

Thousands of Canadians are at a health risk due to the ongoing wildfires and increase in air pollution since early 2023. Forest fires have increased air pollution, leaving people to feel the effects of unhealthy air more than usual.

What you might not realize is that your indoor air quality is also suffering as smoke and fine particulate matter enter buildings and houses. If left unchecked, everyone is vulnerable to the severe health effects of pollution exposure.

In this blog, we’ll help you better understand the health risks, as well as five helpful tips to manage the effects of lower-quality indoor air.

How Do Canadian Wildfires Affect Indoor Air Quality?

While wildfires are common in Canada, this year’s outset is the worst the country has experienced in over 30 years. More people are being exposed to respiratory risks with the fires having burned down almost 11 million hectares of forest nationwide.

Unfortunately, the solution is not as simple as staying inside. Smoke finds its way into homes through open doors, windows, or holes you didn’t know existed. This intrusive smoke exposes your body to high concentrations of indoor air contaminants such as nitrogen dioxide, sulphur dioxide, carbon monoxide, and ozone.

Deviation from the Canadian indoor air quality standards poses many risks. However, the most prominent health threat is the fine particulate matter (PM2.5) scattered throughout the air—these microscopic-sized particles enter your lungs and cause health problems.

What Are the Effects of Poor Air Quality on Human Health?

Repeated exposure to indoor air contaminants and fine particles can trigger or exacerbate existing symptoms, especially for those with Chronic Obstructive Pulmonary disease (COPD) or other chronic conditions. Health effects of air pollution exposure may include:

  • Burning eyes
  • Runny nose
  • Irritation
  • Wheezing and shortness of breath
  • Worsened coughs
  • Premature death
  • Respiratory diseases
  • Lung disease
  • Cardiovascular disease

5 Tips To Improve Indoor Air Quality

Wildfires are your wake-up call to make changes at home. Implementing these five can have a serious impact on your health:

  1. Conduct Air Sampling

Conducting air sampling identifies what air contaminants are present in your home. Professionals use special devices to detect the concentration levels of gases, vapours, dust, and other fibres present in the air.

The results are then used to inform recommended safety measures—consider getting air sampling done in your home to put you on the right track.

Conducting Air Sampling - LG Home Comfort

  1. Eliminate Drafts

Leaving your windows and doors open distributes air pollutants and soot in your home, deteriorating the quality of your air. It’s best to keep them closed when possible if you’re living in an area where wildfires are raging.

Also look to seal all drafts in your home, including the vents and filters. Volatile organic compounds can sneak in through these holes, disturbing your indoor air.

  1. Use Purifiers & Humidifiers

Installing an air purifier is a great way to keep your air healthy, especially if you choose ones with high-efficiency particulate air (HEPA) filters. They work by straining, intercepting, and diffusing the following large to nano-sized particles:

  • Ultrafine particulate matter (PM2.5)
  • Pet allergens
  • Pollen
  • Bacteria
  • Mould
  • Viruses

Humidifiers can also improve the quality of your indoor air by adding moisture, but their efficiency drops after some time. That’s why humidifier maintenance is necessary to avoid breakdowns and inevitable repairs.

  1. Keep Your House Clean

Cleanliness, health, and your air are all connected—dirty homes are breeding grounds for bacteria and viruses. Here’s a general cleaning checklist you can follow:

  • Wipe tabletops, countertops, and other surfaces once a week to prevent dust accumulation
  • Use a lint roll to remove hair on clothes and furniture
  • Clean your refrigerator once a month to prevent bacteria buildup
  • Vacuum your carpets, floors, and furniture
  • Throw away trash bags daily
  • Keep all surfaces dry to prevent mould formation
  1. Conduct Regular HVAC Maintenance

Have you checked the health of your HVAC systems lately?

The importance of their air-balancing effects cannot be overstated. When neglected, you’re liable to find yourself with heating and cooling systems that are distributing pollutants throughout your home, only compounding your problems.

The solution to this problem is regular HVAC maintenance. Start with manual tasks like cleaning HVAC air filters and sweeping debris away from outdoor units. Book an appointment with an HVAC technician for the following work:

  • Detecting and sealing air leaks in your ducts and vents
  • Removing obstructions forming inside furnaces, heat pumps, and central air conditioners
  • Draining the lines of air conditioning units

Conducting Regular HVAC Maintenance - LG Home Comfort

Fight Air Pollution With LG Home Comfort

While you can’t control the wildfires, you most definitely can do your part to keep your indoor air as high-quality as possible. Doing these five things is great, but contacting the experts at LG Home Comfort is the key to improving air quality.

Our specialized services are perfect solutions for the long-term effects of reduced air quality. Our team of highly-qualified professionals is ready to assist you in your efforts to keep your home a healthy place for your loved ones.

Schedule an appointment with us today!

Types of Furnaces and Their Differences

Furnaces are heroes during winter in Canada. After all, they do all the work to maintain the ideal room temperature for comfortable living. Therefore, an HVAC unit is essential to have in your home so you can stay warm and safe from the freezing weather. That’s why you should get one before the cold season arrives.

Familiarize yourself with the different types of furnaces in this article, and learn which type is the most efficient addition to your home.

What Is a Furnace?

A furnace is part of your heating, ventilation, and air conditioning (HVAC) system. It requires fuel, such as natural gas, propane, oil, or electricity, to produce heat and distribute warm air throughout the house.

All furnaces come with multiple components that work together to deliver warm air inside your house. These may include:

  • Thermostats
  • Burners
  • Heat exchangers
  • Blower motor
  • Ductwork 
  • Ventilation  

Additionally, furnaces require heating solutions such as repairs to maintain their quality and performance. 

The 4 Main Types of Furnace Types

Did you know there are different types of furnaces that you can choose from? Get to know each of them in the list below:

1. Natural Gas Furnace

What is the most common furnace type? The answer is a natural gas-powered furnace because of its affordability and low-energy consumption. This is because it uses a mixture of carbon and hydrogen gases to heat the burners in its system. The downside is that this appliance produces carbon monoxide, which can cause leaks leading to significant health problems. Having regular inspections and installing properly functioning CO detectors in your home prevents carbon monoxide poisoning.

If you’re considering this furnace type, know there’re three types of gas furnaces: 

a. Single-Stage Furnaces

Single-stage furnaces only operate in “on” and “off” modes. When the thermostat drops, it will blast warm air at full power and shut itself off as soon as the desired temperature is reached. It’s also affordable and accessible.

While it can give you warmth, a single-stage furnace is not energy efficient. Its two-setting functionality causes uneven heat since it has no methods of maintaining warm air. 

b. Two-Stage Furnaces

A two-stage furnace offers two heating modes: full and low power. This furnace type alternates between these two settings depending on the thermostat. It evenly distributes heat and leaves no cold spots in your home.

Two-stage furnaces are better than the single-stage model because it offers many benefits. Although this type of furnace is more expensive, it’s able to work efficiently and silent—perfect for light sleepers.

c. Modulating Furnaces

One of the best types of furnaces is the modulating kind. This type adjusts the amount of fuel used to reach your target temperature. Even when the thermostat changes slightly, a modulating furnace will recognize the difference and automatically change its settings to match the climate. 

Despite its higher price point, there are multiple reasons to invest in a modulating furnace, especially if you live in Canada as it can easily withstand the unpredictable cold weather.

Modulating Furnaces - LG Home Comfort

2. Oil Furnace

As the name suggests, oil furnaces burn oil as fuel to heat their systems. They’re often preferred over gas furnaces because of their lower cost.

However, an oil-powered furnace requires more frequent maintenance to prevent grease leakage. Its fuel tank must be always be full, or it won’t function. Oil prices are highly volatile these days due to shortages, thus will require you to sometimes pay outstanding costs. There’s also the added danger of carbon monoxide leaks from this appliance when the furnace isn’t vented properly, its burning fuel inefficiently, or when the burner is clogged.

3. Electric Furnace

If you don’t want to deal with carbon monoxide leaks or high oil prices, an electric furnace is a good alternative. It’s even more cost and energy efficient if you decide to go the solar power route—since solar power is a renewable energy source, you don’t need to rely as heavily on electricity.

4. Propane Furnace

Propane furnaces gather power from the connected liquified petroleum gas (LPG) tanks to the heating system. This furnace converts the liquid propane into gas form to heat the burners. 

It’s also the more budget-friendly and accessible option. One tank can last for months because fuel is only used when the furnace is on. 

Tips for Choosing the Right Type of Furnace

With the different types of furnaces, it might be hard for you to choose which one you want. So, here are some things you should consider:

Replace or Repair Your Furnace

Replace your furnace with a new one to solve your heating problems. Let’s say you’re having a hard time fuelling your oil furnace. Upgrading to a gas type is a good idea since its resource is more affordable. 

Before you make the switch, however, have your old furnace inspected to identify its problems. This can help you form a checklist you’ll use while looking for a new HVAC system. 

Consider the Lifespan of a Furnace Type

You should also learn how long your furnace type lasts. Buying a new furnace means spending money, so invest in something with a long lifespan. 

An LG Home Comfort technician doing a furnace maintenance check

Install Your New Furnace With LG Home Comfort

LG Home Comfort provides the best affordable rates for furnace installations, maintenance, and repair. 

Each of our licensed technicians are skilled at maintaining and repairing HVAC systems, and are familiar with local building codes and regulations in the GTA and surrounding area. If you need us, we’re only one call away! 

Contact us now to get a quote. Our customer service is also available 24/7 to attend to your needs.

Heating Basics: Furnace vs. Boiler

If you’re a homeowner, you’ve probably searched “boiler vs furnace” online on more than one occasion. It is a comparison many people want to know about since the two are frequently pitted against each other. 

For that reason, we want to show the differences between a furnace and a boiler. So, keep reading to discover their unique processes, maintenance and other factors you need to consider when looking to purchase either appliance.

The Difference Between Boilers and Furnaces

Before we settle the furnace vs. boiler debate, know that they are both responsible for heating your home. However, their difference lies in how they produce heat.

A boiler heats water using gas, oil, or coal as fuel. Then, the steam emanating from boiled water will be sent through the radiators. These are located in various locations of your home and are responsible for keeping the air warm. 

Meanwhile, furnaces burn propane or natural gas to generate heat. The cold air enters the furnace, which turns it into warm air thanks to its heat exchanger. After that, the furnace’s blower will suck all the heated air and distribute it using your home’s duct system.

Furnace vs Boiler: Pros and Cons

Before deciding on anything, you need to weigh the pros and cons first. Here are some advantages and disadvantages of furnaces and boilers:

Pros and Cons of Boiler Heat

Boilers Require Little Maintenance - LG Home Comfort

Pro #1: Boilers Require Little Maintenance

A boiler may be right for you if you want a low maintenance heater. 

Boilers only need an annual service tune-up to ensure its functionality. This makes them a reliable heating system since they can run for a year without any breakage.

Pro #2: It Provides Good Air Quality

If you suffer from allergic rhinitis, getting a boiler might be good for you. Since boilers only produce steam, the air you breathe will have less contaminants such as dust, dander, and pollen.

Con #1: There’s Risk of Leakage

Owning a boiler means you’re responsible for constantly checking its condition to prevent water leakages. Boiler leakages left untreated can cause water to erode its mechanical parts and create further damage.

Con #2: It’s Expensive

Does a boiler cost more than a furnace? Yes, it does. 

A boiler is more expensive due to its complex installation process. It also takes a longer time to set up since technicians must inspect your home layout first for efficient heat production.

Con #3: It Requires a Constant Supply of Water

Boilers need a constant water supply to continue functioning. Otherwise, it will instantly shut down.

Pros and Cons of Furnace Heat


Pro #1: It Is Cheaper Than Boilers

Furnaces are cheaper because they’re a common choice and are widely accessible. You can also choose to have electrical furnaces instead of the traditional gas ones. 

Pro #2: It Takes Less Time to Install

A boiler can take days to prepare and install in your home. Meanwhile, a furnace only requires four to eight hours to be installed.

Pro #3: It Produces Heat Quicker

Furnaces produce heat faster than boilers, which makes them the preferred heating system.

Produces Heat Quicker - LG Home Comfort

Con #1: It Circulates Airborne Pollutants

The downside of owning a furnace is the risk of inhaling air pollutants, which is one of the causes of dry air. Constant exposure can increase the risk of contracting diseases. 

Con #2: It Requires Constant Maintenance

Frequent use of furnaces leads to faster dust build-up. So, to prevent air pollutants, you must clean or change your furnace filters once a month. On top of that, you need to conduct annual maintenance checks to ensure the functionality of your furnace.

Con #3: It Is Noisier Than Boilers

Furnaces can be noisy which could be a problem if you’re a light sleeper. Expect to hear bangs or popping noises occurring in your ducts frequently. 

Furnace vs Boiler: A Heated Argument

The cards are now on the table, and it’s time to decide which heating system you should get. Your decision should rely on the following factors:

  • Budget 
  • Reliability during winter
  • The layout of your home

Using these factors, you can say that a furnace is the best option. It’s cheaper than a boiler and has less risk of freezing during the winter, making it a reliable heating method. Additionally, you’ll need a furnace if your house already has pre-installed vents. 

That said, don’t forget to consider the cons. Ask yourself if you’re willing to deal with its costly maintenance or the potential noise. If you are, end the boiler vs furnace debate and choose the latter!

Have LG Home Comfort Install Your Furnace

LG Home Comfort can provide the quick and efficient furnace installation services you need. We also have heating solutions services to fix and maintain your furnaces in case of a winter emergency. 

Contact us today for a quote!

How Long Does It Take To Replace a Furnace (Plus Tips on How to Choose the Right Furnace)

A furnace is the heart of any home. It works with your air conditioner (AC) and HVAC equipment to heat your home, keep your family warm, and provide comfort during cold winter. But when it is time to replace your furnace, it’s always a good idea to know what to expect.

The number one question you might have when searching for a new furnace is: “how long does it take to install a furnace?” Replacing a furnace can be stressful, so in this guide, we will provide an overview of the furnace installation process and tips on preparing for a smooth transition.

How Long Does It Take to Install a Furnace?

Installing a furnace can be complicated, but it typically becomes easier with proper preparation and training.

But no matter how experienced you are, the installation of a furnace especially in a residential setup typically takes four to eight hours, based on the job’s complexity. Modifications to the ductwork, electrical wiring, or gas lines may necessitate the addition of extra time for the new equipment to function correctly.

What Affects the Installation Time of Furnace?

Here are the four significant factors that can influence the time of your furnace’s installation process:

Size of Home

How fast to install a furnace depends on the size of your home. Generally speaking, larger homes require more time to install because more space needs to be heated. On the other hand, smaller homes have less space to heat and do not require as much time for installation.

Type of Furnace

The type of furnace you choose will also play a role in determining installation time. Some furnaces are easier to install than others and require fewer materials or tools. An electric furnace, for example, may be easier to install than a gas furnace due to fewer components or additional safety precautions required with gas lines.

HVAC Company

The company you hire for your furnace installation will also affect the length of time needed for installation. Furnace and air conditioning companies have different levels of experience and expertise, impacting how quickly they can complete the job. Furthermore, some companies have better tools and supplies than others, which could affect the installation time.

Furnace Installation Cost

Finally, the cost of your furnace installation also influences how long it takes. Specific parts or materials may need to be bought separately if they are not included in the initial purchase price of your unit. This could slow down the process while waiting for those items to arrive before moving forward with the installation.

Installing a Furnace Requires How Many People?

When installing a furnace, you need to be cautious. Generally, two people will ensure that the job is done correctly, safely, and quickly. This allows them to collaborate and double-check their work before it goes live.

If you are not confident about your skills, hiring experienced technicians familiar with the type of furnace you install is always a good idea. Since these professionals are familiar with your unit, they can take necessary safety precautions.

Why Does Annual Fuel Utilization Efficiency Matter (AFUE)?

Annual Fuel Utilization Efficiency Matter (AFUE) measures a furnace’s energy efficiency and is calculated in percentages. It represents the amount of heat your furnace produces compared to the fuel it uses annually. When shopping for a new furnace, this is one factor you should consider when choosing which model to buy.

The average AFUE of a normal modern furnace is 80% to 85%. In other words, 80% to 85% of the fuel the furnace burns is converted into heat for your home. The rest is vented out of your home, usually through a chimney flue or PVC drain pipe.

According to energy.gov, a furnace must be at least 90% AFUE to be considered high-efficiency. Fortunately, some state-of-the-art furnace models can achieve an energy efficiency of up to 98%. If you have this furnace type, your heating bills will likely be lower throughout the lifespan of your unit.

When Should You Replace Your Furnace?

Your furnace may need to be upgraded if it is older than 15 years or has been serviced frequently in the past few years.

If you notice that repairs are more frequent and take longer to complete on your old furnace, it is time to plan for replacement soon. With new energy-efficient units available today, a new furnace may save you money in the long run.

Tips to Prepare for Furnace Replacement

A well-informed homeowner can make an educated decision about the best heating system for their needs, save money, and enjoy the peace of mind that comes with making an informed purchase. Below are some tips on preparing for furnace replacement.

Tip #1: Inspect Your Furnace

Before taking any action, inspect your current furnace to determine whether repairing it or replacing it would be more cost-effective. It is helpful to know how old your existing furnace is, how efficient it is, and what fuel it uses (natural gas, propane, or electricity). This information will help you research potential replacements that fit your needs and budget.

Tip #2: Explore Your Heating Requirements

How large is your home? What kind of climate are you dealing with? Do you need a single-stage or two-stage system? By answering these questions, you can determine which furnace is most suitable for your home. The size of the area you need to heat also affects cost; larger areas require larger systems which cost more than smaller units.

Tip #3: Decide on Your Furnace Type

Decide on the type of furnace that fits your home’s specifications and your lifestyle and budget. There are three main types of furnaces available in today’s market: natural gas, propane, and electric. Each type has its benefits and drawbacks, making the other a better option.

  • Natural Gas Furnace

Natural gas furnaces are highly popular because they are durable and affordable. However, they require access to a natural gas line, which not all homes have.

  • Propane Furnace

Propane furnaces perform similarly to natural gas models but require propane tanks that need regular refilling. This can become expensive over time if used frequently enough throughout cold winter months.

  • Electric Furnace

Electric furnaces are often much cheaper than natural gas or propane models but can be more expensive to operate. Also, they may only be sufficient in colder climates if paired with additional heat sources like wood stoves or fireplaces.

Tip #4: Decide on Your Heating Area

Deciding how much space you need to heat also helps narrow down potential options when shopping for a new unit. When comparing models, remember that larger units are often more energy efficient than smaller ones because they do not need to run as frequently to maintain a comfortable temperature in larger areas. This results in lower energy bills, so consider investing in a slightly bigger unit upfront if necessary.


Installing a new furnace should not be taken lightly, and all necessary precautions must be taken for it to run correctly and safely. Knowing how long to install a furnace and what affects installation times helps give homeowners an idea of what they are getting into when they decide it is time for their current unit’s replacement.

With these tips in mind, researching ahead of time, and preparing your space accordingly, you can be sure that everything runs smoothly during installation day.

Why a Furnace Blower Turns On and Off Repeatedly? (Plus Easy Fix Tips)

During the colder months, your furnace works hard to keep up with the demand for warm air in your home. But if you notice that your furnace blower turns on and off frequently, your unit most likely has a problem. Typically, the furnace should go through 2 to 4 heat cycles per hour. Each cycle should last up to 5 to 15 minutes, depending on your thermostat’s setting and how cold it is outside.

How Do Furnace Blowers Normally Work?

There are four types of a furnace: gas, oil, electric, and propane. Each type has different components that manage the process of heating your home. One of these components is the blower fan, which circulates air through your ductwork to provide heat throughout your entire house. It works as soon as a thermostat detects a drop in temperature inside the space and signals for more heat.

In normal operation, a furnace blower should constantly run until the heating cycle ends to keep up with demand. This helps regulate air flow and prevent overworking the furnace or costly energy bills due to running it too frequently.

A gas furnace is the most popular one, and the blower inside it works by pushing air from your home’s return ducts, over the heat exchanger (the part that gets hot), through the supply ducts, and into all of your home’s rooms.

Here’s how furnace blowers usually work:

  • First, it will draw air from the return ducts, and then the blower fan will move that air over a heat exchanger. This is where the gas burners are located, producing heat for your home.
  • After the air passes over the heat exchanger, it is sent out of the supply registers as hot air throughout your home to raise its temperature.

Why Does My Furnace Blower Keep on Turning On and Off?

If your furnace turns on and off too frequently, there could be several underlying causes. Some of these include:

  • A dirty air filter
  • An obstructed airflow from closed vents or return ducts
  • Faulty thermostat setting
  • A shorted limit switch
  • Blocked ductwork or a clogged furnace burner
  • Corroded or dirty flame sensor

Some of these issues can be fixed easily by the homeowner, and some may require a professional to come in and take a more in-depth look. Either way, it’s essential to address this issue before it leads to other potential problems in your home, such as frozen coils, cracked heat exchangers, or even carbon monoxide leaks.

How to Fix Furnace Blowers That Constantly Turn On and Off

You can take some steps to fix the problem without calling professionals. Here are some of them:

Check for a Dirty or Clogged Air Filter and Replace It if Needed

If your furnace’s air filter is clogged or dirty, it can reduce the amount of air flowing through the system. This lack of airflow will cause your furnace blower to work harder and cycle on and off more often than usual. To prevent this from happening, check your air filter at least once a month and replace it if needed.

Here’s how you can do it:

  • Check your furnace’s user manual or contact the manufacturer to find out what type of filter you need and where it’s located..
  • Once you locate it, remove the old filter and place a new one in its spot.
  • Make sure to check the size and shape of the filter as well to ensure it fits properly.

Moreover, ensure your home’s air vents are open and not blocked by any furniture or curtains. This ensures the airflow is unrestricted, minimizing the strain on your furnace’s blower motor.

Check Return Ducts and Registers for Obstructions

Return ducts are how air is drawn into a furnace system, while registers are outlets that distribute warm air throughout your home. If these become blocked due to furniture placement, they can restrict airflow and cause your furnace blower to cycle on and off frequently. To prevent this, ensure all return ducts and registers are clear of any obstruction.

Here’s a simple guide on how to do it:

  • Start by removing any furniture or items blocking your return ducts and registers.
  • Clear away dust and debris with a vacuum cleaner with a crevice attachment.
  • Once you’re done, reassemble the return vent and register covers as needed.

Check Your Thermostat Settings

It’s possible that your thermostat settings are not configured correctly, and this could be causing your furnace blower fan to turn on and off often. Adjusting the settings on your thermostat can help to prevent this from happening.

There are types of a thermostat, such as non-programmable, programmable, WiFi, and smart thermostats. The settings will vary depending on the type of thermostat you have.

  • For a non-programmable thermostat, ensure it is set to “Heat” mode and the temperature is equal to or above your desired comfort level.
  • You can customize the heating schedule to match your lifestyle for a programmable or WiFi thermostat.
  • If you own a smart thermostat, you can use its features, such as energy-saving modes, which allow it to sense when you’re away from home and adjust temperatures accordingly. This helps reduce energy costs while ensuring that your furnace’s blower cycles on and off at optimal times.

If you are unsure, you can call a professional to help you inspect and adjust the settings on your thermostat.

Inspect the Fan Limit Switch for Damage or Shorts

Limit switches control how often your furnace blower turns on and off. If these become damaged or shorted out due to age or wear, this can cause them to malfunction and lead to cycling issues. It may enter a lockout mode requiring you to reset the switch or the entire furnace system. This safety mechanism prevents further damage or carbon monoxide leaks in your home.

Depending on your furnace’s age and model, you can reset it yourself. For newer models, turn off the power for about 30 seconds and turn it back on again. If it doesn’t work, call a professional for help.

A bad fan limit switch limit also needs to be replaced, which you can do yourself. You need a multimeter to test the switch. Make sure that the new switch matches your old one. Here’s how to test it:

  • Shut off the furnace’s power and gas.
  • Locate the switch limit, unscrew it, and remove the wires from the terminals.
  • Connect the electrodes of your multimeter to the switch’s terminals, set the meter to “Ohms,” and check for any shorts or resistances. If everything looks good, you can install the new limit switch in its place. Be sure to follow safety guidelines when doing so.

Check Your Flame Sensor

Your furnace’s flame sensor detects the presence of a flame. It shuts off the gas valve if it doesn’t detect one to keep gas from entering your home. If this becomes dirty or corroded, it can cause short cycling and result in your furnace blower shutting off and on frequently.

You can clean the flame sensor yourself with a rag or brush and some rubbing alcohol, but if it doesn’t work, you may need to call a professional for help. They can inspect the sensor and replace it if necessary.


A furnace cycling on and off repeatedly can be caused by various reasons, from dirty filters and obstructions in ducts and registers to incorrect thermostat settings and faulty limit switches. By following the steps above, you can help prevent your furnace from cycling too frequently and save energy costs. If all else fails, call a professional for assistance. Regular maintenance on your furnace system will also help keep it running smoothly and reduce the chance of frequent cycling.

Terms and Conditions

  • Once an initial service has been completed, the customer will be on a one-year commitment
  • After the initial 12 months, the contract will be renewed on a month-to-month cadence
  • If a service is completed for the next year, it automatically renews the commitment for an additional year
  • Customers can cancel at any time after the 12-month initial commitment as long as the following year’s service has not been completed.
  • Customers need to provide 30 days written notice in order to cancel their plan