If you’re replacing your heating system this year, the biggest decision comes down to this: stick with a gas furnace or switch to a heat pump? The short answer? A gas furnace creates heat by burning fuel. A heat pump doesn’t create heat at all. It pulls warmth from the outdoor air using electricity and moves it inside. That one difference changes everything about how much you’ll pay to heat your home, how the warmth feels, what rebates you can get, and whether the system will hold up when January hits minus 35.
Most of the advice floating around online comes from American manufacturers writing for US climates. That’s not very helpful when you live somewhere that gets six months of real winter. So we put together this guide specifically for Canadian homeowners who want straight answers on costs, cold weather performance, rebates, and which setup actually makes financial sense north of the border.
How a Gas Furnace Heats Your Home
Nothing complicated here. Natural gas flows into the burner, ignites, and heats up a metal component called the heat exchanger. A blower fan pushes air across that hot metal and sends it through your ductwork. When the thermostat is satisfied, the burner shuts off and the blower winds down.
Gas furnaces are still the most common heating system in Canadian homes. They’re popular for a reason. The technology is proven, repair parts are everywhere, and every HVAC company in the country knows how to service one. In provinces where natural gas is cheap (Alberta and Saskatchewan come to mind), a furnace can be very affordable to run.
New models are incredibly efficient too. The best ones on the market right now carry AFUE ratings of 96% to 98.5%. That means for every dollar of gas you burn, roughly 97 cents turns into heat for your home. Only a few pennies escape up the flue. That’s about as good as combustion technology gets, because you can never squeeze more than 100% out of burning fuel.
How a Heat Pump Heats (and Cools) Your Home
Here’s where things get interesting. A heat pump doesn’t burn anything. It works more like a refrigerator running in reverse. Even when the air outside feels freezing, there’s still thermal energy in it. The heat pump captures that energy through a refrigerant cycle and transfers it indoors.
The wild part? Because a heat pump moves existing heat instead of manufacturing it, the system can deliver two to four times more heat energy than the electricity it consumes. Engineers measure this using something called Coefficient of Performance, or COP. A heat pump with a COP of 3 gives you three kilowatts of heat for every one kilowatt of electricity you feed it. Try getting that out of a furnace.
And in summer, the whole process flips. The heat pump pulls warmth out of your house and dumps it outside, working exactly like an air conditioner. One box does both jobs. That’s a big deal when you’re pricing out HVAC replacements.
Side by Side: Furnace vs Heat Pump Comparison
| Gas Furnace | Heat Pump | |
|---|---|---|
| What it does | Heating only (need a separate AC) | Heating AND cooling in one unit |
| How it heats | Burns natural gas | Moves heat from outdoor air using electricity |
| Efficiency | Up to 98.5% AFUE | 200% to 400% effective (COP of 2 to 4) |
| Installed cost | $3,500 to $7,000 | $5,000 to $12,000 (but replaces furnace + AC) |
| Yearly heating bill | $800 to $1,500 | $600 to $1,200 |
| How long it lasts | 15 to 20 years | 15 to 20 years |
| Emissions | Produces CO2 from burning gas | Zero on site emissions |
| Cold weather | Works the same at any temperature | Modern cold climate models rated to minus 25°C to minus 30°C |
Those cost figures are Canadian averages. What you’ll actually pay depends on your province, the size of your home, the brand you pick, and how complex the install turns out to be.
The Efficiency Question: Why Heat Pumps Win on Paper
Let’s talk numbers for a second. A 96% efficient gas furnace is great. You’re losing very little energy up the exhaust pipe. But a furnace has a hard ceiling. No matter how advanced the engineering gets, combustion cannot exceed 100% efficiency. The laws of thermodynamics won’t allow it.
A heat pump blows past that ceiling because it’s playing a completely different game. It’s not creating energy from fuel. It’s relocating energy that already exists in the air. When a heat pump operates at a COP of 3, you’re essentially getting $3 worth of heat for every $1 of electricity. At a COP of 4, that jumps to $4 of heat per $1 spent.
Now, here’s the part the manufacturers don’t always highlight. That COP number drops as the temperature drops. At minus 10°C, a modern cold climate heat pump might still pull off a COP of 2.5. At minus 25°C, you’re looking at closer to 1.5 to 2.0. Still better than an electric furnace (which sits at COP 1.0), but the gap between a heat pump and a gas furnace narrows once things get truly brutal outside.
That’s exactly why the dual fuel approach exists.
Do Heat Pumps Actually Work in Canadian Winters
Five or ten years ago, this was a legitimate concern. Older heat pumps started struggling below minus 10°C and became paperweights below minus 15°C. That reputation stuck, and a lot of homeowners still believe it.
But the technology has moved on. Fast.
Cold climate heat pumps from manufacturers like Mitsubishi, Daikin, Carrier, and Bosch are now rated to deliver full heating capacity down to minus 15°C. Some models keep going down to minus 25°C or even minus 30°C. They won’t be at peak efficiency at those temperatures, but they’re still producing meaningful heat.
For provinces where minus 20°C is a typical January night (most of Ontario, the Maritimes, southern BC, and parts of Quebec), a cold climate heat pump can handle the winter on its own. For places that regularly see minus 30°C to minus 40°C for weeks at a time (the prairies, northern Ontario, the territories), you’ll want a backup plan. That’s where dual fuel comes in.
Dual Fuel Systems: The Smart Play for Cold Climate Canada
A dual fuel setup pairs a heat pump with a gas furnace. The system decides which one to use based on the outdoor temperature, always picking whichever option costs less to run at that moment.
In practice, here’s what a typical Canadian winter looks like with a dual fuel system:
October through early December, when temperatures sit between plus 5°C and minus 10°C, the heat pump handles everything. It’s running at peak efficiency. Your gas furnace stays off and your gas bill drops to almost nothing.
Mid December through February, once temperatures start hanging around minus 15°C to minus 25°C, the system switches between the heat pump and furnace depending on conditions. On milder days, the heat pump runs. On the coldest nights, the furnace takes over.
During those brutal cold snaps, minus 30°C and below, the gas furnace runs full time. No stress about the heat pump struggling. Your home stays warm exactly the way it always has.
Spring and summer, the heat pump flips into cooling mode and works as your air conditioner. You don’t need a separate AC unit.
The result? You use gas only during the coldest stretches of winter and electricity the rest of the time. For a lot of Canadian homeowners, this setup produces the lowest total annual heating and cooling bill.
What Does All This Actually Cost in Canada?
Buying and Installing
A new gas furnace runs between $3,500 and $7,000 installed, depending on the efficiency rating and the brand. Keep in mind that a furnace only heats. If your air conditioner is old too, you’re looking at another $3,500 to $6,000 to replace it. So the real number for a furnace plus AC is often $7,000 to $13,000.
A heat pump that handles both heating and cooling costs between $5,000 and $12,000 installed. When you compare apples to apples (one system vs two), the pricing gap narrows a lot.
A dual fuel system (heat pump plus gas furnace together) runs $8,000 to $15,000 installed. More upfront, but it gives you the lowest running costs and the most flexibility.
Yearly Operating Costs
Your fuel bills depend heavily on where you live and what your local utility charges. Here’s the reality across different provinces:
Where natural gas is cheap (Alberta, Saskatchewan, parts of Manitoba), a gas furnace can heat a home for $800 to $1,200 per year. A heat pump will cost roughly the same or a bit less for heating, but it also handles your cooling for free.
Where electricity is cheap (Quebec, BC, Manitoba), heat pumps win easily. Manitoba is actually a sweet spot because Manitoba Hydro’s electricity rates are among the lowest in North America. A heat pump there can cut total HVAC costs well below what a gas furnace plus separate AC would cost over a year.
Where heating oil or propane is the fuel (parts of Atlantic Canada, rural Ontario, northern communities), switching to a heat pump is the biggest financial win of all. Oil and propane cost far more per unit of heat than either gas or electricity. Homeowners making this switch routinely see their heating bills drop by 40% to 60%.
Rebates That Change the Math
This is the part a lot of people miss. Canadian governments and utilities are pushing hard to get heat pumps into homes, and they’re backing it up with real money.
The Canada Greener Homes program and its successor initiatives have offered up to $5,000 for qualifying heat pump installations. Provincial programs stack on top of that. Efficiency Manitoba, BC Hydro, Enbridge in Ontario, and others have their own rebates ranging from $1,000 to $5,000 depending on the program and the equipment.
When you combine federal and provincial rebates, some homeowners walk away with $5,000 to $10,000 in total incentives. That can bring the net cost of a heat pump below what you’d pay for a new furnace and AC combo. The rebate landscape changes frequently, so check what’s available in your province before you commit to a furnace replacement.
Does Furnace Heat Feel Different from Heat Pump Heat?
Yes, and this is worth talking about because the difference catches people off guard if nobody warns them.
A gas furnace blows hot, aggressive air. The air coming out of your registers is typically 50°C to 60°C. It heats up a room fast, then the furnace shuts off, and the room slowly cools down until the thermostat triggers another cycle. You feel those peaks and valleys throughout the day. The combustion process also strips moisture from the air, making everything feel dry. Cracked lips, static shocks, that tight feeling in your sinuses during winter? A gas furnace makes all of that worse. A lot of furnace homes end up adding a humidifier to compensate, which means more equipment and more maintenance on top of indoor air quality concerns.
A heat pump sends warmer, gentler air through the registers, usually around 30°C to 40°C. It doesn’t hit you with that blast of hot air the way a furnace does. Instead, it runs longer, steadier cycles to hold the temperature more evenly throughout the house. Because it doesn’t burn anything, it doesn’t suck the humidity out of your air the way combustion heating does.
Most people who grew up with furnace heat need a week or two to adjust. After that? The feedback we hear over and over is that the consistent warmth and better humidity actually feel more comfortable than the old furnace ever did.
The Environmental Angle
Every time a gas furnace fires up, it’s burning fossil fuel and releasing CO2 into the atmosphere. Even the most efficient model still produces on site carbon emissions. Research from UC Davis published in the journal Energy Policy found that switching from a gas furnace to a heat pump cuts household heating emissions by 38% to 53%.
A heat pump produces zero emissions at the point of use. The total environmental footprint depends on how your province generates its electricity. In Quebec, BC, Manitoba, and Ontario, where the grid runs primarily on hydro, nuclear, and renewables, a heat pump is about as clean as home heating gets. Even in provinces with a mixed grid, the efficiency advantage means a heat pump still produces fewer total emissions per unit of heat than a gas furnace.
As Canada’s electricity grid gets cleaner year over year, that advantage keeps growing.
Maintenance: What to Expect from Each System
A gas furnace needs a professional tune up once a year before heating season. That covers the heat exchanger, gas valve, burner assembly, blower motor, and a safety check on the flue and exhaust. A well cared for furnace runs 15 to 20 years before it needs replacing.
A heat pump needs service twice a year, once before heating season and once before cooling season, because it runs 12 months instead of six. That means checking refrigerant, cleaning the outdoor coil, inspecting electrical connections, and swapping filters. With proper maintenance, a modern heat pump lasts 15 to 20 years as well.
Both systems need their air filters checked every month and replaced every one to three months. If you’ve got a WiFi thermostat, most of them will remind you automatically.
So Which One Should You Pick?
Here’s the straightforward version:
A gas furnace makes sense when your home already has gas service, your province has cheap natural gas relative to electricity, your existing AC still has years of life left, and you want the lowest upfront cost right now.
A heat pump makes sense when you want one system for heating and cooling year round, your province has affordable electricity, you currently heat with oil, propane, or electric baseboard (you’ll save a lot), you want to take advantage of available rebates, and your winters stay above minus 25°C most of the time.
A dual fuel system makes sense when your winters regularly go below minus 25°C for extended stretches, you want the absolute lowest annual operating cost, you’re replacing both your furnace and AC at the same time anyway, and you want heat pump efficiency on mild days with furnace backup for the worst cold.
There’s no single right answer for every Canadian home. But there is a right answer for your home, and it depends on what you’re paying for energy, how cold it gets where you live, and what’s already installed in your basement.
Frequently Asked Questions
Is a heat pump better than a furnace?
That depends on where you live. In provinces with mild winters and affordable electricity, a heat pump is usually the better pick because it heats and cools from one unit with lower operating costs. In provinces with cheap natural gas and extreme cold, a furnace or a dual fuel system might make more financial sense.
At what temperature does a heat pump stop working?
Old models struggled below minus 10°C. Today’s cold climate heat pumps are rated to operate at minus 25°C to minus 30°C. Efficiency drops as temperature drops, but the units keep running. In extreme cold climates, pairing a heat pump with a gas furnace in a dual fuel setup covers all your bases.
Can a heat pump replace a furnace entirely?
In most of southern Canada, yes. A cold climate heat pump can be your only heat source. In areas that stay below minus 25°C for weeks at a time, most HVAC professionals recommend keeping a gas furnace or electric backup alongside the heat pump.
Is it cheaper to heat with gas or a heat pump?
It depends on your local gas and electricity rates. In Alberta and Saskatchewan where gas is cheap, a furnace can be less expensive for heating alone. In Quebec, BC, and Manitoba where hydro rates are low, a heat pump usually wins. Factor in cooling costs too, because a heat pump gives you AC at no extra equipment cost.
How much does a heat pump cost in Canada?
Installed, you’re looking at $5,000 to $12,000 before rebates. Federal and provincial incentives can bring that down by $5,000 to $10,000 depending on what programs are running in your province.
Do you need a furnace with a heat pump?
Not always. But in extreme cold climates, a dual fuel setup (heat pump plus gas furnace) gives you the best of both worlds. The heat pump covers mild days efficiently, and the furnace takes over during the coldest stretches.
What is a dual fuel heating system?
A system that pairs a heat pump with a gas furnace. It automatically switches between the two based on outdoor temperature, always using whichever option costs less to run at that moment. In cold climate provinces, this usually delivers the lowest annual HVAC bill.
Does furnace heat feel different from heat pump heat?
Yes. Furnace heat is intense and dry, with hot blasts of 50°C to 60°C air and noticeable temperature swings between cycles. Heat pump air is gentler (30°C to 40°C), steadier, and retains more indoor humidity. Most people who switch prefer the more consistent comfort after a short adjustment period.