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Air Conditioner Not Working? We Fix It Same Day

Ontario’s Certified AC Repair Experts

24/7 Emergency AC Repair Service

Genuine OEM Replacement Parts

Up-Front Pricing - No Hidden Fees

Same-Day Diagnostics & Fix

Dependable repairs that restore comfort-quickly and professionally.

Accreditations

Fast & Reliable AC Repair Services by
LG Home Comfort

LG Home Comfort diagnoses and repairs common AC problems, from poor cooling and airflow issues to leaks and system breakdowns. Our technicians explain the problem and recommended repair before completing the work. Many common AC repairs can be completed the same day with parts carried on our service trucks.

What’s Included in AC Repair Service?

AC repair focuses on identifying the cause of the cooling issue and correcting faulty components.
Typical AC repair service includes:
These steps help ensure the system is restored to proper working condition.
What’s Included in AC Repair Service

AC Not Working? Common AC Problems That Need Repair

Some air conditioning issues go beyond routine maintenance and usually indicate a system fault that needs professional repair.

AC is running but not cooling

The AC system turns on, but the air coming from vents does not feel cool. This often points to a problem affecting the cooling cycle rather than airflow or filters.

Warm air coming from vents

Warm air instead of cool air usually means the AC is not able to remove heat properly. This can happen when a key cooling component is not working as intended.

AC Not Turning On or Off

If the AC does not start or keeps turning off, it may be responding to a control, electrical, or safety issue. These problems typically require diagnostic testing and repair.

Unusual noises during operation

Banging, buzzing, grinding, or rattling sounds can signal internal component issues. New or louder noises should be checked to prevent further system damage.

Weak airflow or uneven cooling

Poor airflow or rooms cooling at different rates can indicate external problems. A Licensed technician can determine the core root of the problem.

Error codes or warning indicators

Modern AC systems display error codes when a fault is detected. These codes help technicians identify the issue but usually require professional repair to resolve.
These situations usually require AC repair rather than routine maintenance, as they involve system components that are no longer operating properly.

AC Services We Offer to Improve Comfort & Efficiency in Your Home

AC Installation

AC Installation

LG Home Comfort’s licensed technicians ensure your air conditioner is correctly sized and professionally installed – so it cools your home efficiently and reliably all summer long.

AC Maintenance

Regular maintenance by LG Home Comfort’s certified technicians keeps your air conditioner running efficiently, extends its lifespan, and prevents unexpected breakdowns when you need it most.
Technician performing air conditioner maintenance in Ontario home

Why Choose LG Home Comfort for AC Repair

LG Home Comfort provides AC repair services built around trained technicians, timely response, and clear service processes.

Certified HVAC technicians

Licensed professionals trained to diagnose and repair residential air conditioning systems.

Support in 24-hour

Technicians respond within 24 hours to address AC repair requests.

Emergency repair availability

Support when cooling stops unexpectedly during hot weather.

Clear repair process

Issues and repair steps are explained before work begins.

Warranty-covered repairs

Repairs completed according to applicable warranty terms and manufacturer guidelines.

24/7 Emergency Service

Licensed technicians available anytime

What Our Customers Say

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Areas We Serve

AC Repair Across Ontario Communities

When your AC fails, every minute feels hotter. A broken system doesn’t wait for the right time, and neither do we. Quick, reliable repair is what keeps your home cool and your family comfortable.

At LG Home Comfort, we take the worry out of emergency breakdowns and urgent fixes. Serving Mississauga, Oakville, Brampton, Guelph, and nearby communities, our expert technicians repair all makes and models-restoring cool, dependable air in just one visit.

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Vaughan
301 Bradwick Drive,
Vaughan, ON L4K 1K5, Canada
Kitchener
20 Hanson Ave,
Kitchener, ON N2C 2E2, Canada
Mississauga
7885 Tranmere Dr,
Mississauga, ON L5S 1V8, Canada
Ottawa
17 Grenfell Crescent Unit 7,
Ottawa, ON K2G 0G3, Canada
RunTru condenser unit product photo on white background.

We Service All Major AC Brands

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Trane logo
Midea logo
Don't see your brand?

We repair all makes and models.

Frequently Asked Questions

When Should I Call For AC Repair

You should contact AC repair services if your system is not cooling, blowing warm air, shutting off repeatedly, making unusual noises, or displaying error codes. Any change in normal operation that affects comfort should be checked promptly to avoid further issues.

Yes, LG Home Comfort offers emergency AC repair. Emergency service is intended for urgent issues that affect comfort during hot weather. Availability depends on scheduling and service demand at the time. Homeowners are encouraged to contact customer support as soon as an issue occurs so the situation can be reviewed and the fastest available service option can be arranged.

Most AC repairs are completed within one to three hours, depending on the type of issue and part availability. Simple problems are often resolved quickly, while more involved repairs may require additional time. 

  • Minor issues – Often fixed within a short visit 
  • Part-related repairs – May take longer if components are needed 
  • Clear timelines provided – Repair time explained after diagnosis 

Once the system is inspected, technicians explain the issue and confirm the expected repair duration before work begins, so homeowners know what to expect 

AC repair costs can vary depending on the issue and the parts involved. For air conditioners purchased from LG Home Comfort, most repairs are covered at no cost during the parts and warranty period, which may include parts and service depending on the system and coverage terms. This helps reduce unexpected repair expenses.

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