Choosing equipment
Cold-climate vs regular heat pumps: which do you need in Canada?
The difference in one line
A cold-climate heat pump is built to keep producing useful heat at much lower outdoor temperatures. That usually comes from a variable-speed (inverter) compressor and a design tested for low-temperature performance.
What NRCan says
- Air-source heat pumps stop working at a minimum operating temperature of roughly -15°C to -25°C, depending on the model.
- Cold-climate models can operate to about -30°C. Standard models may need supplemental heat starting around -10 to -15°C.
- Heat pumps deliver air at about 25–45°C, compared with 55–60°C from a furnace. The air feels cooler but runs longer, and that's normal.
Which do you need?
| Where you live | Usual choice |
|---|---|
| Coastal BC (Vancouver, Victoria area) | A standard unit can work; cold-climate gives headroom |
| Ontario, Atlantic Canada, BC Interior | Cold-climate |
| Prairies, North | Cold-climate plus a backup heat plan |
What to ask the installer
- The AHRI number. You need it for the federal rebate and to check the eligible list.
- The rated heating capacity at your local design temperature, not just at 8°C.
- Whether they did a heat-loss calculation. NRCan's sizing guide explains why sizing matters.
- How backup heat (an existing furnace, baseboards or electric strips) will switch on.
See also: heat pump vs gas furnace and ducted vs ductless.
Frequently asked questions
How cold can a heat pump work?
NRCan says air-source heat pumps have minimum operating temperatures of roughly -15°C to -25°C depending on the model, and cold-climate units can operate to about -30°C. They still heat at those temperatures, but output and efficiency fall.
Is there still heat in outdoor air at -18°C?
Yes. NRCan notes that air at -18°C still holds about 85% of the heat it holds at 21°C, which is what a heat pump extracts.
Does the federal rebate require a cold-climate model?
The National Heat Pump Rebate requires a model on its eligible list, identified by AHRI number. Check the list for your exact model. Some provincial programmes, like Ontario's, require cold-climate units.
Want a heads-up when the federal portal opens?
Reserve your spot