AC Repair · Toronto & GTA

Air conditioner repair
across Toronto & the GTA

When cooling fails in a heatwave the timing is never convenient. We will tell you honestly when we can reach you, what it is likely to be, and what it will cost before we start.

Book AC repair Call 647 953-4252
Diagnostic-first repair visits
Most major residential brands
Honest repair vs replace advice
GTA coverage from North York
At a glance
ServiceAC repair & diagnose
BrandsMost majors
Typical visitSame week*
Emergency peaksHeat-wave priority
Phone647 953-4252
Also availableNew AC installs
1,000+
Clients served
TSSA
Certified team
7 days
A week support
GTA-wide
Service coverage
20+ yrs
Climate experience
Residential AC repair

Fast, accurate air conditioner repair — without the mystery invoice

Most condensers that appear dead are not. A failed capacitor, a burnt contactor or a tripped float switch will all stop a system completely, and all are repairs rather than replacements. Diagnosing first and quoting second is the difference between a service call and an unnecessary sale.

We work through electrical, airflow, refrigerant and controls in that order. Low refrigerant in particular is a symptom, not a fault — a system that is short has a leak somewhere, and topping it up without finding that leak just books the same call again next summer.

Where a unit genuinely has reached the end, you get both numbers before anything is decided: what the repair would cost, what replacement costs, and how much life the repair realistically buys.

What matters most for air conditioner repair in the GTA
Right sizing, licensed gas/refrigeration work, and commissioning beat the cheapest sticker price. We verify airflow, safety devices, condensate paths, and controls so your system does not fail the first extreme week of the season. Ask us about dual-fuel, zoning, and rebate-eligible models during your quote.
Repairing now vs upgrading for rebates
If repair costs approach replacement on an aging system, ask us about high-efficiency upgrades and incentives — view current HVAC rebates in the GTA.
Problems we diagnose & fix
  • AC runs but air is warm
  • Outdoor unit silent or humming only
  • Ice on evaporator coil or copper lines
  • Short cycling / frequent on-off
  • Water leaking at the furnace or air handler
  • Strange smells, grinding, or rattling
  • Thermostat calls for cool, system ignores
  • Breaker trips when AC starts
Practical sequence

How we approach air conditioner repair

A structured process so you always know the next step.

Consult
Goals & constraints
Assess
On-site measurements
Compare
Repair vs replace
Schedule
Parts & access
Execute
Licensed install
Verify
Commission & teach
Repair services

Air conditioner repairs we perform

From simple electrical parts to refrigerant recovery and coil work, we handle the failures that actually show up in GTA homes — and we document what we find.

Electrical & start components
Capacitors, contactors, relays, and hard-start kits — the most common “dead condenser” fixes when diagnosed correctly.
Book a diagnostic →
Refrigerant leak find & seal
Leak detection, repair where feasible, recovery, vacuum, and recharge to manufacturer specifications.
Report weak cooling →
Compressor & outdoor fan
Failed compressors and fan motors evaluated for repair vs full condenser replacement based on age and refrigerant type.
See replacement options →
Indoor coil & drain issues
Dirty coils, clogged condensate drains, and float-switch trips that shut systems down on humid days.
Clear a drain emergency →
Ductless mini-split repair
Head errors, communication faults, and outdoor failures on ductless systems common in Toronto renovations.
Ductless service info →
Pre-season & post-repair tune
After a major repair we verify airflow, temperatures, and amperage so the fix holds through the season.
Back to cooling hub →
4 checks
Electrical, airflow, refrigerant, controls — before any part is quoted
Most "dead" condensers are a capacitor or contactor. Diagnose first, replace second.

Down in a heatwave?

We know the timing is never convenient

Call and we will tell you honestly when we can reach you, what it is likely to be, and what it will cost before we start.

Book a repair
Where this fits

Common air conditioner repair applications in Toronto & the GTA

Different buildings need different equipment paths. These are the scenarios we see most often.

Detached & semi-detached homes
Full replacements, dual-fuel strategies, and comfort fixes for older duct systems common across Toronto neighbourhoods.
Condos & townhomes
Compact footprints, quiet operation, and board-friendly installs where access and condensate matter.
Additions & renovations
Matching new loads without oversizing, including ductless zones where trunks cannot reach.
Light commercial
Retail, clinics, offices, and mixed-use spaces that need documented maintenance and predictable uptime.
Rental properties
Durable equipment choices, clear landlord options, and service plans that reduce emergency callouts.
Efficiency upgrades
High-AFUE / SEER2 / heat-pump paths with rebate paperwork guidance when programs apply.
Why Toronto Air Systems

Why trust us with AC repair

We would rather fix a solid mid-life system than scare you into a replacement — and we would rather replace a dying compressor on a 18-year R-22 unit than take your money for a temporary charge.

TSSA-licensed technicians
Every technician who works on your equipment holds current Ontario gas and/or refrigeration credentials — no uncertified subcontractors.
Built for Toronto winters & summers
We size and install equipment for real GTA climate extremes, not brochure averages from milder markets.
Transparent pricing
Detailed written quotes with equipment specs, labour, and warranty terms. No bait-and-switch or surprise change orders.
Multi-brand expertise
We service and install major HVAC brands, so recommendations fit your home — not a single manufacturer quota.
How it works

What happens on an AC repair visit

Clear steps from the first call through verified cool air — so you are never left wondering what was done on your system.

Consultation
Tell us about your home or building, symptoms, and goals — by phone or online form.
On-site assessment
A licensed technician evaluates your existing air conditioner, ductwork, and load requirements.
Written quote
You receive clear options, pricing, timelines, and rebate notes — no vague estimates.
Installation or repair
Our TSSA-licensed team completes the work to code with minimal disruption.
Follow-up support
We walk you through operation, warranty, and ongoing maintenance recommendations.
Brands we work with

AC brands we commonly repair

We service most major residential brands found across Toronto housing stock. Bring the model and serial if you have them — it speeds parts confirmation.

Where we work

AC repair across Toronto & the GTA

Same-week repair visits are available across Toronto and neighbouring cities whenever technician capacity allows — priority rises during extreme heat.

Toronto
All neighbourhoods & districts
North York
Our home base
Mississauga
West GTA residential & commercial
Brampton
Full HVAC coverage
Vaughan
Including Woodbridge & Concord
Markham
East GTA homes & businesses
Richmond Hill
Residential & mixed-use
Scarborough
East Toronto
Etobicoke
West Toronto
Oakville
Halton Region
Pickering & Ajax
Durham Region
Whitby & Oshawa
East GTA
Client reviews

AC repair reviews

Other company wanted a full system. Toronto Air Systems replaced a $40 capacitor and a failing contactor. Ice melted, house cooled in an hour. Fair diagnostic fee applied to the repair.
Michelle D.
North York
Found a leak at the service valve, repaired it properly, and recharged. Explained why a top-up alone would have failed again in two weeks.
Rajiv P.
Brampton
Ductless head kept throwing error codes. They traced a communication wire nick from a previous reno and had both zones working the same afternoon.
Laura C.
The Annex
FAQ

Air conditioner repair FAQ

Common causes include a failed capacitor or contactor, low refrigerant from a leak, a dirty evaporator coil, a blower issue, or a thermostat/configuration problem. We test electricals, airflow, and refrigerant circuit before recommending parts — guessing wastes your money in a heat wave.
Simple electrical parts are often modest; refrigerant leak repairs and compressors cost more. You pay a diagnostic fee that is typically applied to approved repairs, then receive a firm parts-and-labour price before we proceed with major work.
Sometimes. If the repair is minor and the system is otherwise healthy, we may proceed. If the compressor or a major leak fails on an R-22 unit, replacement is usually the responsible recommendation because refrigerant is scarce and expensive. We explain the math on site.
Turn the system off and switch the thermostat fan to ON to help thaw the coil. Check that filters are clean. Do not keep running a frozen system. Call 647 953-4252 — ice usually signals airflow restriction or low refrigerant that needs proper diagnosis.
During peak heat we prioritize no-cool calls and triage by severity. Same-day service is often available but never guaranteed when demand spikes city-wide. Call early in the day for the best scheduling window.
It depends on the fault. A capacitor on a well-maintained 15-year unit is usually worth fixing. A compressor or major leak on the same unit often tips toward replacement — especially if you can access efficiency rebates. We present both numbers so you choose.
Share your address, system symptoms, approximate age/brand if known, and whether the outdoor fan or compressor makes any sound. Photos of the nameplate help us arrive with likely parts. Call 647 953-4252 or use our contact form.
Cost depends on equipment capacity, brand, duct or piping complexity, electrical/gas upgrades, and whether you repair or replace. We provide written quotes after a site assessment so you can compare options fairly. Call 647 953-4252 for a visit.
Yes. We are based in North York at 132 Cartwright Ave and regularly serve Toronto, Mississauga, Vaughan, Markham, Scarborough, Etobicoke, Brampton, and nearby communities.
Yes. Gas and refrigeration work is performed by TSSA-licensed technicians. We follow Ontario code practice for venting, refrigerant handling, electrical disconnects, and condensate management.

Need cool air restored?

Book an AC diagnostic with Toronto Air Systems. Call 647 953-4252 — TSSA-certified repair across Toronto and the GTA.

Book AC repair Call 647 953-4252