Safety boundary: Do not wash electrical compartments, bend coil fins aggressively or use unapproved coil chemicals.
Owner tasks
Replace or clean the indoor filter, clear leaves and lint from around the outdoor unit, keep condensate drains visible and ensure supply and return pathways are open.
- Read the appliance manual and note model-specific warnings.
- Take photos or notes from a safe position.
- Stop when a panel, fuel line, refrigerant circuit or fixed wiring would need to be opened.
Professional checks
Service may include coil condition, electrical components, temperature split, airflow, drain operation, refrigerant-circuit assessment and thermostat controls.
Winter considerations
Do not wrap a heat-pump outdoor unit in plastic; it must operate and drain. Follow manufacturer guidance for air-conditioner covers and maintain snow clearance around heat pumps.
Track performance
Rising runtime, declining comfort, new noise, water leakage or repeated faults are better reasons for service than waiting for total failure.
Useful questions to record
- Is airflow weak, warm, intermittent or normal?
- Is the outdoor unit operating?
- Is there ice or water around the indoor equipment?
Related guides
Heat Pump Basics for Canadian HomesHow air-source heat pumps move heat, provide cooling and interact with backup systems in cold weather.Central Air Conditioning BasicsThe indoor coil, outdoor unit, refrigerant circuit, blower and ductwork explained.Ductless Mini-SplitsWhere ductless heat pumps work well, where multiple heads complicate comfort and what installation quality means.Window, Through-Wall and Portable Air ConditionersHow room units differ and why single-hose portable units can disappoint.