Not every HVAC company offers genuine around-the-clock service. We do. At Constant Home Comfort, our repair team is available every day of the year, including weekends and statutory holidays. We have been serving Ontario homeowners for years and have built a reputation on fast response times, honest pricing, and workmanship you can trust. Here is what sets us apart:

• Available 24 hours a day, 7 days a week, 365 days a year — no extra charge just for calling after hours
• Licensed, trained, and fully insured HVAC technicians on every call
• Fast response times — we aim to reach you within hours, not days
• Transparent, upfront pricing with no surprise charges once the work is done
• We service all major central AC brands including Lennox, Goodman, KeepRite, American Standard, Daikin, Carrier, and more
• Manufacturer-approved parts with warranties on both parts and labor
• Over 1,000 five-star reviews from Ontario homeowners on Google, HomeStars, and the BBB

When your air conditioner fails, you deserve a company that picks up the phone, sends someone quickly, and fixes the problem right the first time. That is exactly what we deliver.

Central air conditioning systems are complex. From the outdoor condenser unit to the indoor air handler, evaporator coil, refrigerant lines, and thermostat, there are many components that can malfunction. Our technicians are trained to diagnose and repair all of the following:

AC Not Cooling or Blowing Warm Air

If your system is running but the air coming through your vents is warm or only slightly cool, the cause is often low refrigerant levels, a dirty evaporator coil, or a failing compressor. Our technicians will pinpoint the exact issue and restore proper cooling performance.

AC Not Turning On

A system that will not start at all is often caused by a tripped circuit breaker, a faulty capacitor, a failed contactor, or thermostat communication issues. We carry common replacement parts on our service vehicles so that many of these repairs can be completed during the same visit.

Refrigerant Leak

Low refrigerant is one of the most common causes of reduced cooling capacity. It is also a sign of a leak that must be located and repaired before the system is recharged. Simply adding refrigerant without fixing the leak is a temporary fix — our technicians find the source and resolve it properly.

AC Freezing Up or Icing Over

Ice forming on your evaporator coil or refrigerant lines is a sign something is restricting airflow or the refrigerant charge is off. Running a frozen unit causes compressor damage, which is a costly repair. If you notice ice on your system, shut it off and call us right away.

Unusual Noises (Banging, Grinding, Squealing, Rattling)

Strange noises coming from your indoor or outdoor unit are never normal. Banging or clanging can indicate a loose or broken component. Grinding sounds may point to motor bearing failure. Squealing often means a worn belt or blower motor issue. Do not ignore these warning signs — they tend to escalate into bigger problems quickly.

Water Leaking from the Indoor Unit

Water pooling around your indoor air handler is typically caused by a blocked condensate drain line or a cracked drain pan. Left unaddressed, it can lead to water damage and mould growth. We clear clogged drains and replace damaged pans to protect your home.

Short Cycling (AC Turns On and Off Repeatedly)

When your air conditioner runs in short bursts rather than completing full cooling cycles, it is working harder than necessary, driving up your energy bills, and wearing out components prematurely. Short cycling is commonly caused by an oversized system, refrigerant issues, a dirty air filter, or a faulty thermostat.

Weak or No Airflow

Poor airflow from your vents makes it impossible to cool your home evenly. Common culprits include a clogged air filter, a failing blower motor, blocked or leaking ductwork, or a dirty evaporator coil. Our technicians will trace the issue back to its source.

Foul or Musty Odours from Vents

If you notice a musty or burnt smell when your AC runs, it could signal mould growth in the ductwork or on the evaporator coil, or an electrical issue with the motor or wiring. Both warrant immediate professional attention.

It is always better to catch a problem early before it turns into a full system failure on the hottest day of the year. Watch for these warning signs and call Constant Home Comfort as soon as you notice them:

• Your home is not reaching the temperature set on the thermostat
• Your energy bills have increased noticeably with no change in usage habits
• Some rooms are significantly warmer than others (hot spots in the home)
• The system is making unusual sounds during operation
• You can see ice forming on the unit or refrigerant lines
• The outdoor unit is vibrating excessively or running constantly
• There is moisture, water, or refrigerant pooling around the unit
• The thermostat display is unresponsive or giving inaccurate readings

Do not wait until your system completely stops working. Addressing issues early almost always means a simpler, less expensive repair.

This is one of the most common questions we get, and the honest answer depends on several factors. As a general guideline, if your central air conditioner is less than ten years old and the repair cost is under half the price of a new system, repairing it usually makes good financial sense. If the system is older, has had multiple repairs in recent years, or the compressor has failed, replacement is often the smarter long-term investment.

Our technicians will give you an upfront assessment with no pressure. If a repair will give your system several more years of reliable service, we will tell you. If replacement makes more financial sense — especially given the rebates currently available in Ontario — we will walk you through your options honestly.

Homeowners who replace older, inefficient central air conditioners with a new high-efficiency model can access significant rebates through Ontario programs, including the Home Renovation Savings Program. Ask our team about current rebate eligibility when you call.

We keep the process straightforward so you know exactly what to expect from the moment you call to the moment your home is cool again.

• Call 1-888-675-5907 anytime — day or night. Our team is available 24/7 and will get a technician dispatched to you as quickly as possible.
• Diagnosis and inspection. Your technician will perform a full assessment of the system, identify the root cause of the problem, and explain what needs to be done in plain language.
• Upfront quote. You will receive a clear, itemized price before any work begins. No hidden fees, no surprises.
• Repair completed. We carry commonly needed parts on our service vehicles to complete most repairs the same day. All work is backed by a warranty on both parts and labour.
• Post-repair check. Before we leave, we test the entire system to confirm it is operating correctly and that your home is cooling as expected.

From the first call to the final check, the entire process is designed to get your family comfortable again as quickly as possible.

The best way to avoid an emergency air conditioner repair is to prevent the problem before it starts. Constant Home Comfort offers AC maintenance plans that keep your system running efficiently all season long. A routine tune-up includes cleaning the evaporator and condenser coils, checking refrigerant levels, inspecting electrical components, testing the thermostat, and lubricating all moving parts.

Regular maintenance extends the lifespan of your central air conditioner, improves energy efficiency, catches small issues before they become costly breakdowns, and helps keep your manufacturer warranty valid. Ask about our maintenance plan options when you call.

How quickly can you send a technician for an emergency AC repair?

We dispatch technicians as quickly as possible and aim to arrive within a few hours of your call in most service areas. Because we operate 24 hours a day, 7 days a week, you will never be told to wait until Monday or the next business day.

Do you charge extra for after-hours or weekend AC repairs?

We are upfront about our pricing. When you call, our team will provide a clear quote before any work begins so there are no surprises on your invoice regardless of when you call.

What brands of central air conditioners do you repair?

Our technicians are trained to repair all major central AC brands, including Lennox, Goodman, KeepRite, American Standard, Carrier, Daikin, Rheem, York, Trane, and more. If you have a central ducted air conditioning system, we can service it.

My AC is running but not cooling. What is wrong?

A system that runs but does not cool is most commonly caused by low or leaking refrigerant, a frozen evaporator coil, a dirty air filter restricting airflow, or a failing compressor. Our technician will diagnose the exact cause during the service visit.

Is it worth repairing a central air conditioner that is over 10 years old?

It depends on the nature of the repair and the overall condition of the system. A minor repair on a 12-year-old unit in otherwise good shape may still make sense. However, if the compressor has failed or the system needs multiple repairs, replacement is often the better investment — especially with Ontario rebates that can significantly offset the cost of a new high-efficiency unit.

Do you offer financing for AC repairs or replacements?

Yes. Constant Home Comfort offers flexible financing options, including 0% interest plans (O.A.C.), making it easier to get the repair or new system your home needs without a large upfront payment.

Constant Home Comfort provides 24/7 central air conditioner repair throughout Ontario. Our service areas include Toronto, Markham, Scarborough, Richmond Hill, Vaughan, Newmarket, Mississauga, Durham, Burlington, Barrie, Hamilton, London, Waterloo, Ottawa, Kanata, Windsor, and all surrounding communities.

Not sure if we cover your area? Call us at 1-888-675-5907 and we will confirm your location instantly.

Do not spend another night sweating in the heat waiting for your air conditioner to be fixed. Constant Home Comfort is available right now — any time of day, any day of the year. Our licensed technicians serve all of Ontario with fast response times, honest pricing, and repairs backed by a warranty.

Call us anytime at 1-888-675-5907 or fill out our online contact form to request a quote. We will get your home comfortable again — fast.