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Heating & Cooling (HVAC)

Air Conditioner Repair in Ontario

Air conditioners fail during heat waves for the same reason furnaces fail in cold snaps: that's when they're working hardest. The unit that hummed along fine in June starts blowing warm air the first thirty-degree week of July, or the outdoor fan spins but nothing cools, or the breaker trips every time the compressor tries to start.

Some fixes are simple — a clogged filter starving airflow, a tripped float switch from a plugged condensate drain, a dead capacitor that costs little and takes minutes. Others go deeper: refrigerant leaks, failing compressors, coils iced into a solid block. Refrigerant work requires certified handling, so diagnosis and repair go to qualified technicians who can actually open the sealed system legally and safely.

Two things worth checking before you send a request: the filter (a smothered filter causes a surprising share of 'broken' ACs) and the outdoor unit (clear leaves and debris a hand's width around it). If ice is visible on the lines or coil, shut the system off and let it thaw — running it frozen damages the compressor.

What this covers

  • No-cooling diagnosis and repair
  • Capacitor and contactor replacement
  • Refrigerant leak detection and certified recharging
  • Frozen coil diagnosis
  • Condensate drain clearing and float switch faults
  • Fan motor repairs, indoor and outdoor
  • Breaker-tripping and hard-start problems
  • Seasonal tune-ups and coil cleaning

What affects the price

  • The fault itself — a capacitor swap and a refrigerant leak hunt are different days
  • Refrigerant type; older systems use phased-out refrigerants that complicate repairs
  • Age of the unit and the repair-versus-replace question it raises
  • Accessibility of the coil, lines and outdoor unit
  • Urgent heat-wave calls versus a scheduled shoulder-season visit
  • Whether the real culprit is airflow — ducts, filter, blower — rather than the AC itself

Every home is different, so we don’t publish flat prices — the quote is free and based on your actual job.

Air Conditioner Repair near you

We take quote requests across Ontario. Local pages:

TorontoOttawaMississaugaBramptonCaledonHamiltonVaughanMarkhamRichmond HillAuroraNewmarketGeorginaWhitchurch-StouffvilleKingOakvilleBurlingtonMiltonHalton HillsOshawaWhitbyAjaxPickeringClaringtonKitchenerWaterlooCambridgeLondonBarrieInnisfilBradford West GwillimburyCollingwoodSt. CatharinesNiagara FallsWellandGrimsbyFort ErieGuelphWindsorKingstonGreater SudburyPeterboroughThunder BayBrantfordBellevilleSarniaWoodstockStratfordOrangevilleCornwallNorth BaySault Ste. MarieChatham-KentOrilliaWasaga BeachMidlandNew TecumsethSt. ThomasKawartha LakesCobourgPort HopePrince Edward CountyQuinte WestLeamingtonOwen SoundBracebridgeHuntsvilleNiagara-on-the-LakeTimminsBrockville

Common questions

My AC runs but the air isn't cold. What's wrong?
Start with the filter and the outdoor coil — starved airflow is the most common and cheapest answer. Past that, the likely suspects are low refrigerant from a leak, a failing compressor, or a coil iced over from running with poor airflow. A technician with gauges sorts out which in one visit.
There's ice on my AC lines. Is that normal?
No — ice means something's wrong, usually weak airflow or low refrigerant. Keep running it and the ice spreads until liquid refrigerant reaches the compressor, which is how repair bills turn into replacement bills. Switch the system off, let it thaw completely, and get it diagnosed.
Can I just top up the refrigerant every spring?
A system that needs regular topping up has a leak — refrigerant doesn't get used up like fuel. Recharging without fixing the leak buys a few weeks and vents refrigerant you paid for. The honest path is finding the leak, weighing repair against the unit's age, and deciding once.
Why does the AC trip the breaker?
Often a compressor struggling to start — a worn capacitor or hard-start condition draws a spike the breaker won't tolerate. Sometimes it's the breaker itself aging, sometimes a short in the wiring. Resetting it once is reasonable; resetting it daily is asking a protective device to referee an electrical fault.
Repair or replace?
Weigh the repair cost against the unit's age and refrigerant type. A big repair on an old unit running a phased-out refrigerant is money into a dead end, while the same repair on a ten-year-old system is easy to justify. Ask for the honest comparison — and if replacement wins, get the installation quoted while the technician is already looking at your setup.

Ready to sort out your air conditioner repair?

Tell us what your home needs — a small fix or a full project — and get a free quote.

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