The work
What ac repair actually involves
Most failures are electrical or airflow, not the compressor
An air conditioner that will not cool usually has a cheap problem. Capacitors fail more than any other single component, contactors burn, and a dirty filter or a blocked coil chokes the airflow until the system protects itself and shuts down.
The expensive failures are the sealed system: the compressor and a genuine refrigerant leak. Those are the ones where the age of the unit starts to decide whether repair is sensible at all.
Before calling anybody, change the filter and check that the outdoor unit is clear of leaves and growth. A surprising number of no-cooling calls are one of those two, and both are free to rule out.
Refrigerant
A system that needs topping up has a leak
Refrigerant is not consumed. It circulates in a sealed loop, and if the charge is low, it went somewhere.
Adding refrigerant without finding the leak is a repair with a countdown on it: the same call next season, at the same price, with the new gas gone the same way.
It matters more than it used to, because older refrigerants are being phased down and the cost per pound has climbed steeply. Paying twice to refill a leaking system can approach the cost of fixing it properly.
Failure points
Two things that go wrong
Diagnosis rolled into the repair
“What is the diagnostic fee, and does it come off the repair if I go ahead?”
Some firms charge a diagnostic fee and waive it if you proceed, some charge it regardless, and some quote a repair price that assumes you already agreed. All are fine if you know which; it is the assumption that costs money.
Straight to replacement
“What specifically failed, what does the repair cost, and how old is this system?”
On a system over ten or twelve years old, replacement often is the right recommendation. On a five-year-old unit with a failed capacitor it is not, and the difference between the two conversations is whether anybody told you what actually failed and what the part costs.
Before you book ac repair
How we rank →Six checks, in the order they save you the most. None of them takes longer than a phone call, and the first one is the reason two quotes for the same job can be a thousand apart.
Where we cover it
HVAC shortlists by city
Every shortlist →A company offering ac repair appears in the published list for its own market. Each one names the editor who built it and the date they last checked it.
- 10 Best HVAC Companies in Tampa, FLTampa, FL · Updated Sep 2026
- 10 Best HVAC Companies in Mississauga, ONMississauga, ON · Updated Sep 2026
- Best HVAC Companies in Charlottetown, PECharlottetown, PE · Updated Sep 2026
- Best HVAC Companies in St. John's, NLSt. John's, NL · Updated Sep 2026
- Best HVAC Companies in Newark, NJNewark, NJ · Updated Sep 2026
- 10 Best HVAC Companies in Winnipeg, MBWinnipeg, MB · Updated Sep 2026
- 10 Best HVAC Companies in Victoria, BCVictoria, BC · Updated Sep 2026
- Best HVAC Companies in Vancouver, BCVancouver, BC · Updated Sep 2026
On the lists
Companies that list ac repair
Drawn from the profiles where this service is recorded, not from what a company advertises.
PCS Plumbing & Heating Inc
Buffalo, NY
Mission Air Conditioning & Plumbing
Houston, TX
Cellino Plumbing, Heating, Cooling & Electric
Buffalo, NY
Zenner & Ritter Home Services
Buffalo, NY
Dr HVAC and Plumbing
Toronto, ON
Green Heating and Air Inc.
Toronto, ON
Common questions about ac repair
Who handles ac repair?
AC repair is handled by HVAC companies. Not every company in the trade takes this work on, so each ranking lists the services a company genuinely performs rather than everything it advertises.
What should I ask before booking ac repair?
Ask what the quote includes and excludes, who is doing the work, whether a permit is needed and who is pulling it, and what the workmanship warranty covers. Get the answers in writing before anyone starts.
How do I compare quotes for this?
Put them on one sheet line by line. Differences in price almost always turn out to be differences in scope, material grade or warranty length rather than margin.
Is ac repair priced separately from the rest of the job?
Usually it is a line inside a larger quote rather than its own invoice, which is exactly why the exclusions matter. Ask for it itemised so you can compare that line between companies instead of comparing two totals.
For hvac
Do you offer ac repair?
Claim your profile so the services you actually perform are the ones recorded here, alongside your licence, hours and coverage. Neither claiming nor advertising buys a ranked position.