AC will not start
Request repair help when your air conditioner will not turn on, the outdoor unit will not start, or cooling does not respond at the thermostat.
Share a few details and we will help connect you with HVAC service options in your area.
This page is for residential no-start cooling problems. Share what the thermostat, indoor blower, outdoor unit, and breaker are doing so available service options can review the request.
For a system that will not turn on, the most useful details are what happens at the thermostat, whether the indoor blower runs, and whether the outdoor unit makes any sound.
Also include whether a breaker tripped, whether there was recent electrical work, and whether the issue started suddenly or after a previous repair.
An AC that will not start may involve thermostat wiring, a breaker, a condensate safety switch, a capacitor, contactor, motor, control board, or other electrical issue.
The provider determines the repair path after inspection. ACRepair.ca's role is to capture the request clearly enough for useful follow-up.
If there are burning smells, visible electrical damage, repeated breaker trips, or water near electrical components, avoid repeatedly trying to force the system on.
Submit the issue clearly and mention any safety concern in the form.
Common issues
How it works
Tell us where you are, how urgent the issue is, and what your AC system is doing.
Requests are submitted through ACRepair.ca and organized so they can be reviewed against HVAC service options when available.
If service options are available, pricing, booking, and timing are handled directly with the provider.
Related AC repair help
FAQ
Possible causes include thermostat problems, tripped breakers, blocked drain safety switches, electrical components, failed motors, or control issues. A provider can confirm after inspection.
No. If a breaker keeps tripping, stop resetting it and include that detail in your request because it may indicate an electrical issue.
It can be urgent during extreme heat or when the home has medical, age-related, or comfort concerns. Mark the correct urgency when submitting the request.