Quick answer
Change or clean the air filter about every three months and book professional maintenance once a year. In winter, keep the outdoor unit clear of snow and ice so air can flow.1
What homeowners can do
- Filters: change or clean them about every three months.1
- Outdoor unit: keep it clear of leaves, snow drifts and ice, and never pile snow against it.
- Indoor vents: keep supply and return vents unblocked by furniture.
- Defrost: in winter, the outdoor unit periodically runs a defrost cycle; a little steam is normal.
Annual professional service
Natural Resources Canada recommends professional maintenance every year to keep a heat pump efficient and reliable.1 A service typically checks refrigerant operation, electrical connections, coils, the condensate drain and controls.
Signs to call a technician
- The home isn't reaching the set temperature.
- Ice stays on the outdoor coil after a defrost cycle.
- Unusual noises, or backup heat running much more than usual.
Protection plans: our Good and Best plans include annual tune-ups and priority service. Compare plans
Common follow-up questions
How often should a heat pump be serviced?
Natural Resources Canada recommends professional maintenance once a year.
Is it normal to see steam from the outdoor unit in winter?
Yes. That's usually the defrost cycle melting frost off the coil.
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Answers are general information as reported by the sources listed on the date shown, not personal financial or technical advice. Programs, prices and rules change. Canadian Energy Standard is an independent company, not affiliated with any government, utility or program named here.