How can I prevent common problems with heat pump?
Keep heat pump clean, unobstructed, dry where required, correctly adjusted by normal controls, and serviced at documented intervals.
What this means
Heat pump covers heating mode, outdoor unit, defrost, backup heat, and efficiency. Relevant observations include Air feels cool in heating mode, Outdoor unit is covered in ice, Backup heat runs constantly, Outdoor unit will not run, Heating costs increased suddenly. The correct response depends on age, design, climate, usage, installation, recent work, and the exact manufacturer instructions; these observations narrow next steps but do not prove a failed part.
Safe checks
- Keep the normal user-serviceable parts of heat pump clean and unobstructed.
- Correct moisture, loading, clearance, drainage, or ventilation issues only within documented user access.
- Keep dated maintenance and service records so recurring changes are visible.
Stop and get help if
- Leave for a gas odour or carbon-monoxide alarm; stop for smoke, scorching, damaged wiring, or repeated breaker trips.
- Do not open combustion, refrigerant, high-voltage, or sealed compartments.
Which professional to call
Use a qualified HVAC technician when the condition exceeds safe user access or the visible checks do not explain it.
Find the relevant tradeSource and method
This answer combines HomeSOS's structured triage with safety boundaries supported by a public source. It does not replace inspection.
Health Canada: Home safetyReviewed August 12, 2026