Canada
Smart thermostats in Canada
By Ismail Farooq · Updated 2026-10-30
Canadian homes need a thermostat that copes with long, cold winters, and which one fits depends mostly on how the house is heated. In Quebec and parts of Atlantic Canada and BC, low electricity prices made electric baseboard heaters the norm, with a thermostat in every room. In Ontario and the Prairies, most houses have a gas furnace and central air. Heat pumps, often cold-climate models with a furnace or electric backup, are now common everywhere.
Which thermostat for which system
| Heating | Thermostat type | Smart options |
|---|---|---|
| Electric baseboard or convector | Line voltage (120/240 V), one per room or zone | Line-voltage smart thermostats such as Mysa or Sinopé, rated above the heater’s wattage |
| Gas or oil furnace, central air | 24 V low voltage | Any mainstream smart thermostat; check for a C wire |
| Heat pump with backup | 24 V with O/B and aux heat terminals | One that supports heat pumps with aux heat or dual fuel, and an outdoor temperature reading |
| Hot water boiler | Usually two-wire 24 V or millivolt | Two-wire-capable models, or add power; see boiler thermostats |
Baseboard heaters
A 240 V baseboard thermostat has two or four heavy wires. Check the heater’s wattage on its label and add up every heater the thermostat controls: a thermostat rated 3,000 W at 240 V can run up to about 3,000 W of heaters, and many electricians keep the load under 80% of the rating. Smart baseboard thermostats need a neutral or work without one depending on the model, so check the box before you buy. Baseboard thermostat wiring goes through two-wire and four-wire setups step by step.
Furnaces and heat pumps
For a gas furnace, any smart thermostat works with the usual R, W, Y, G wires, and most need a C wire or an adapter. Check yours in the wiring tool. With a heat pump, the settings matter more than the wiring:
- Aux heat lockout: cold-climate heat pumps keep heating well below -15 °C, so set the lockout from the installer’s balance point, not a default.
- Dual fuel: where gas is cheap, a compressor lockout lets the furnace take over in deep cold. See aux heat running too much.
- Celsius: set the thermostat and app to °C so schedules match your weather forecasts.
Winter humidity
Very cold outdoor air makes indoor air dry, but too much humidity condenses on windows. Thermostats that control a humidifier can lower the target as it gets colder outside. A common guide is about 35% at -10 °C and 25 to 30% at -20 °C or colder.
Rebates
Provinces and utilities run their own programs for smart thermostats and heat pumps, and they change often. Check your province’s energy efficiency program and your electricity and gas utility’s website before buying, and keep the receipt and model number.