What should I do if my AC is smoking?

Turn off your air conditioning system immediately and do not use it until a licensed HVAC technician inspects it. Smoking from an AC unit indicates a serious electrical or mechanical problem that could lead to fire or equipment damage.

Immediate steps to take: First, turn off the AC at your thermostat, then go to your electrical panel and switch off the breaker for the air conditioning system. This ensures the unit is completely de-energized. Do not attempt to investigate the source of the smoke yourself, as this could involve live electrical components.

Common causes of smoking AC units include overheated electrical components, a seized compressor motor, burned-out capacitors, or damaged wiring. In Ottawa's hot summers, overworked systems can experience electrical failures, especially in older units or those that haven't received regular maintenance. Sometimes what appears to be "smoke" could actually be refrigerant vapor from a leak, but this still requires immediate professional attention.

Safety considerations are paramount with any smoking electrical appliance. While AC units don't typically produce carbon monoxide (since they don't burn fuel), electrical fires are a real risk. Keep the area around your outdoor unit clear and ensure good ventilation if the smoking occurred from your indoor unit.

Next steps: Contact a licensed HVAC technician for an emergency service call to diagnose the problem. Depending on the age and condition of your system, this could range from a relatively simple capacitor replacement ($200-400) to major component failure requiring system replacement. Don't attempt to restart the system until it's been professionally inspected and repaired.

For emergency HVAC service in Ottawa, we can provide same-day diagnosis to get your cooling restored safely.