Utilities · Canada
Heat pump vs furnace in Canada: winter running cost, cold-weather COP and 2026 rebates
A cold-climate heat pump costs less to run than electric baseboards or an oil furnace in most of Canada, but against a natural gas furnace it only wins when your all-in electricity price divided by its winter COP beats your gas cost per useful kWh. Natural Resources Canada (NRCan) says air-source heat pump COPs typically run 2.0–5.4 at 8°C and fall to 1.1–3.7 at −8°C, so your rates, your climate and your backup heat decide the answer.
This guide compares the machines, shows the running-cost math with a labelled example, and lists the rebates that are still open. Convert your fuels first in gas vs electric heat. If the attic is empty, read insulation before you buy a compressor.
Key takeaways
- Gas vs heat pump is a rate question. Example with illustrative inputs: gas at 40 ¢/m³ all-in is about 4.1 ¢ per useful kWh in a 95% furnace; hydro at 16 ¢/kWh needs a seasonal COP of about 3.9 to tie it.
- Baseboards and oil are where heat pumps shine. In the same example, a COP 2.5 heat pump costs 6.4 ¢ per useful kWh against 16 ¢ for baseboards — 60% less.
- Cold weather cuts COP. NRCan’s Ottawa test house measured a cold-climate unit at COP 3.0 at +4.9°C and 1.5 at −21.1°C. A Yukon study found ducted cold-climate units near COP 1.15 at −25°C.
- Ontario’s 1 November 2026 prices: Ultra-Low Overnight is 3.7 ¢/kWh overnight but 37.7 ¢ on weekdays 4–9 p.m., when a heat pump works hardest on a cold evening.
- Federal money is closed (Greener Homes Grant and Loan; Oil to Heat Pump Affordability intake ended 31 July 2026). Ontario’s Home Renovation Savings program still lists up to $7,500 for non-gas homes and up to $2,000 for gas-heated homes.
Is a heat pump cheaper to run than a furnace in Canada?
Against electric resistance or oil, usually yes. Against natural gas, only when your electricity is cheap enough or your heat pump’s real winter COP is high enough. NRCan says air-source heat pumps are up to 2.5 times more efficient than an oil furnace or boiler, and cold-climate models up to 3 times.
The machines do different jobs:
- Gas furnace. Burns gas and pushes warm air through ducts. Efficiency is AFUE. New gas furnaces sold in Canada must be at least 95% AFUE if made on or after 3 July 2019 (replacement non-condensing and relocatable-building furnaces are allowed 80%), so an older 80% mid-efficiency unit uses noticeably more gas for the same heat. No cooling unless you add A/C.
- Conventional air-source heat pump (ASHP). Moves outdoor heat indoors and cools in summer. NRCan says supplemental heat may be needed somewhere between −10°C and −15°C.
- Cold-climate ASHP (ccASHP). Built for Canadian winters. NRCan says these can operate as cold as −30°C, with backup needed below that. Running is not the same as running efficiently.
- Hybrid / dual-fuel. A heat pump for mild weeks and a gas furnace below a changeover temperature. Common in Ontario and Prairie houses that already have gas and ducts.
What do COP and “works to −30°C” actually mean?
COP (coefficient of performance) is heat delivered ÷ electricity used. NRCan’s example: 1 kW of electricity moving 3 kW of heat is a COP of 3. HSPF is a seasonal rating; NRCan lists 7.1 to 13.2 for units on the market, for a climate like Ottawa’s (Region V).
Ask every quote for a table, not a slogan:
- Heating capacity at +8°C, −8°C, −15°C and −25°C (or the model’s published floor).
- COP at those same temperatures.
- What happens below the lockout: resistance strips, the furnace, or a cooling house.
- Defrost behaviour, and whether the indoor unit blows cool air during defrost.
“Works to −30°C” means the compressor is allowed to run there. It does not mean a 2-ton unit still delivers 2 tons, or that the COP you saw at +8°C holds in January. If the installer cannot produce the spec sheet, you are shopping a slogan.
How well do heat pumps work in a Canadian January?
They keep working, at a lower COP. Two Canadian field results show the range:
- NRCan, Canadian Centre for Housing Technology (Ottawa). A cold-climate heat pump with a 10 kW electric backup heater kept the test house comfortable below −21°C. Heating COP averaged 3.0 at +4.9°C and 1.5 at −21.1°C, with larger indoor temperature swings than a standard furnace and cooler supply air during defrost.
- Government of Yukon study (RDH Building Science). Correctly commissioned ductless units averaged about COP 2.3 at −25°C and a seasonal COP of 3.05. Central ducted units averaged about 2.55 at 0°C, 1.6 at −15°C and 1.15 at −25°C, for a seasonal COP of 1.85.
Comfort is part of the trade. Heat pump supply air is cooler than a gas furnace’s, so rooms can feel drafty while the thermostat is satisfied. Outdoor units hum and steam during defrost; a bedroom window above the pad is a January complaint. Backup heat is comfort insurance: resistance strips are expensive to run, and a hybrid’s furnace carries the polar snaps.
How do you compare running costs with your own rates?
Put both fuels in cents per useful kWh, using the conversion in the fuel comparison:
- Gas: 1 m³ of natural gas is about 10.36 kWh of energy; a 95% furnace delivers about 9.8 kWh of heat. All-in ¢/m³ (supply, delivery and fixed charges spread over the m³) ÷ 9.8.
- Heat pump: all-in ¢/kWh ÷ the seasonal COP you can defend (the Yukon averages above are a reality check: about 3 ductless, under 2 ducted).
- Backup: add the hours below lockout at COP 1 (strips) or at furnace efficiency (hybrid).
- Payback: net cost after live rebates ÷ the yearly saving.
| Heating option | Cost per useful kWh | Yearly heating cost |
|---|---|---|
| Gas furnace, 95% AFUE | 40 ÷ 9.8 ≈ 4.1 ¢ | about $816 |
| Heat pump, seasonal COP 3.0 | 16 ÷ 3.0 ≈ 5.3 ¢ | about $1,067 |
| Heat pump, seasonal COP 2.5 | 16 ÷ 2.5 = 6.4 ¢ | $1,280 |
| Electric baseboard (COP 1) | 16 ¢ | $3,200 |
Example with illustrative inputs, read two ways: replacing baseboards with a COP 2.5 heat pump cuts this example bill from $3,200 to $1,280. Replacing the gas furnace raises it from about $816 to $1,280, because the heat pump would need a seasonal COP of about 3.9 (16 ÷ 4.1) just to tie. Change either rate and the winner can flip.
In Ontario, the Ontario Energy Board’s prices from 1 November 2026 are 9.1 ¢ off-peak, 14.6 ¢ mid-peak and 18.9 ¢ on-peak per kWh on Time-of-Use. Ultra-Low Overnight is 3.7 ¢ from 11 p.m. to 7 a.m. but 37.7 ¢ on weekdays from 4 to 9 p.m. — exactly when a heat pump works hardest on a cold evening. These are commodity prices; delivery and regulatory charges come on top, and the Ontario Electricity Rebate becomes 15.7% on 1 November 2026. Compare plans in TOU vs ULO vs Tiered. Québec households should price Rate D’s second-tier kWh in the Rate D guide.
When does a hybrid (dual-fuel) system make sense?
When the house already has gas, ducts and a furnace with years left, a hybrid adds a heat pump for the mild weeks and lets the furnace take the coldest days. The controls decide how much you save:
- Temperature lockout. Heat pump above a set outdoor temperature (for example −5°C or −10°C), furnace below. Simple.
- Price / COP lockout. A smarter thermostat switches on your actual rates. Rare unless someone sets it up.
- Installer default. A conservative lockout can let the furnace do most of the winter and erase the savings you were sold.
Ask who sets the changeover, whether you can change it, and what happens after a power blip in a cold snap. A hybrid avoids expensive resistance backup in a gas house; it also means maintaining two systems.
What can kill a heat pump quote: panel, ducts or siting?
| Constraint | Why it shows up | What to ask |
|---|---|---|
| Service / panel | Compressor + backup strips + existing range and dryer | Load calculation; 100 A vs 200 A; who pulls the electrical permit |
| Ducts | Heat pumps want more airflow; older trunks are small | Static pressure; whether ductless heads are the honest path |
| Siting | Snow, wind, neighbour noise, condo boards | Stand height, drift, clearance, condo rules |
| Line sets / holes | Ductless heads on every floor | How many wall penetrations; where condensate drains in January |
An EnerGuide evaluation gives you a rating and a heat-loss picture before you sign. Get two quotes that use the same design temperature; if a contractor cannot name it, keep shopping.
What heat pump rebates are still available in 2026?
- Federal: closed to new applicants. Canada Greener Homes Grant (last day to upload documents 31 December 2025); Greener Homes Loan (funding fully committed, approved loans unaffected); Oil to Heat Pump Affordability (federal intake ended 31 July 2026; final receipts due 31 January 2027 for existing files).
- Ontario: Home Renovation Savings. Cold-climate air-source heat pump: $1,250 per ton, up to $7,500, if you heat with electricity, oil, propane or wood; $500 per ton, up to $2,000, if you are an Enbridge Gas customer heating with gas. You must own the home, use a participating contractor and get pre-approval before installation.
- Other provinces and utilities. Amounts and rules change; check the current list in heat pump rebates by province the week you sign.
When does replacing the furnace still make more sense?
- The heat exchanger failed in November and you need heat this week, not a design project.
- The panel, ducts or condo rules make a heat pump a later project.
- You plan to sell within a few years and a buyer may not pay you back for a premium system.
- Your gas cost per useful kWh already beats a realistic heat-pump COP on your rates, and you do not value the cooling.
A like-for-like furnace swap is a smaller, known cost; see when to replace a gas furnace. Pair it with attic air sealing. Revisit a heat pump when the old central A/C dies — that is the natural moment to add a hybrid in a gas house.
Sources
- Natural Resources Canada: Heating and cooling with a heat pump (COP definition; COP 2.0–5.4 at 8°C and 1.1–3.7 at −8°C; HSPF 7.1–13.2, Region V). Read 19 Oct 2026.
- Natural Resources Canada: Heat pumps (supplemental heat at −10°C to −15°C for conventional ASHPs; cold-climate units to −30°C; up to 2.5× / 3× an oil furnace). Read 19 Oct 2026.
- NRCan: Performance assessment of a cold-climate air-source heat pump at the Canadian Centre for Housing Technology (COP 1.5 at −21.1°C, 3.0 at +4.9°C; 10 kW backup).
- Government of Yukon: cold-climate heat pump study summary (ductless ~2.3 at −25°C, SCOP 3.05; ducted 2.55 / 1.6 / 1.15 at 0 / −15 / −25°C, SCOP 1.85).
- NRCan: Energy efficiency regulations, gas furnaces (95% minimum AFUE for furnaces manufactured on or after 3 July 2019; 80% for replacement non-condensing and relocatable-building units).
- Ontario Energy Board: electricity prices effective 1 November 2026 (TOU 9.1 / 14.6 / 18.9 ¢; ULO 3.7 / 9.1 / 14.6 / 37.7 ¢; OER 15.7%), announced 16 Oct 2026.
- NRCan: Canada Greener Homes Initiative (Grant closed, documents by 31 Dec 2025; Loan closed) and Oil to Heat Pump Affordability program (intake ended 31 Jul 2026; receipts by 31 Jan 2027). Read 19 Oct 2026.
- Home Renovation Savings (Enbridge Gas and Save on Energy): heat pump rebates ($1,250/ton up to $7,500; $500/ton up to $2,000 for Enbridge gas-heated homes; pre-approval required). Read 19 Oct 2026.
- Gas energy content (1 m³ ≈ 10.36 kWh) as used in the gas vs electric heat guide; your utility’s heat value is on your bill.
Frequently asked questions
Is a heat pump cheaper to run than a gas furnace in Canada?
Only if your all-in electricity price divided by the heat pump’s winter COP is lower than your all-in gas cost per useful kWh. Example with illustrative inputs: with gas at 40 ¢/m³ all-in and hydro at 16 ¢/kWh all-in, a 95% furnace costs about 4.1 ¢ per useful kWh, so the heat pump needs a seasonal COP of about 3.9 just to tie. Against electric baseboards or oil, a heat pump usually wins.
Does “works to −30°C” mean it heats like a furnace at −30°C?
No. It means the compressor can still run. NRCan says COPs fall as it gets colder, from 2.0–5.4 at 8°C to 1.1–3.7 at −8°C, and capacity drops too. Ask for the spec sheet at −15°C and −25°C and what backup heat does after lockout.
Is a hybrid cheaper than an all-electric cold-climate heat pump?
Often on upfront cost if you already have a decent furnace and ducts. Running cost depends on the changeover temperature and your gas and hydro rates. A conservative lockout can hand the furnace most of the winter and erase the heat-pump savings you were quoted.
Do I need a 200 amp panel for a heat pump?
Many all-electric retrofits with resistance backup do. Hybrids that keep the gas furnace as backup sometimes fit on a 100 A service. Only a load calculation by a licensed electrician answers it.
Can I still get a federal heat pump grant in 2026?
Not for new applicants. The Canada Greener Homes Grant is closed (the last day to upload documents was 31 December 2025), the Greener Homes Loan is fully committed, and the federal Oil to Heat Pump Affordability intake closed 31 July 2026. Provincial and utility programs are the live path, so check them the week you sign.
How much is Ontario’s heat pump rebate?
Ontario’s Home Renovation Savings program lists $1,250 per ton, up to $7,500, for a cold-climate air-source heat pump in homes heated with electricity, oil, propane or wood, and $500 per ton, up to $2,000, for Enbridge Gas customers who heat with natural gas. Pre-approval through a participating contractor is mandatory.
Researched and drafted with AI assistance and fact-checked against official Canadian sources. How we create content.
Note: This is education — not a specification, rebate approval, or installation advice.