HeatPumpIndex

How Long Does a Heat Pump Take to Pay for Itself?

Last updated: By HeatPumpIndex Evidence Desk

A saving in dollars a year is only half a decision. This divides it into what the equipment costs, so the answer is a number of years, and it is honest about the case where that number does not exist.

How many years to pay the equipment back
What heats the house now?

Oil and propane are not offered. They are the cases a heat pump wins most easily, which is exactly why they are not here on a guess: no Ontario government or utility source publishing a current furnace oil price could be found for this build.

m³

Shown at NRCan's 2,700 m3 for a new average sized detached Canadian home.

percent
a COP of 3.87

NRCan puts the Canadian market between HSPF 7.1 and 13.2. Shown at the top of it.

Does not pay for itself

No payback

A heat pump would cost $475 a year more to run than what you have, so there is nothing for the equipment to pay back out of. The equipment still buys you cooling, and the answer moves with the electricity price.

The two bills

  • Gas furnace, a year$725
  • Heat pump at HSPF 13.2, 7,070 kWh$1,200
  • Heat delivered either way98.5 GJ
  • Difference, a year$-475

Installed cost is the published GTA range for a ducted system: $5,000 to $12,000, Imperial Heating (Toronto, 2026 price guide). Nothing is taken off for a rebate, because what Ontario pays depends on the fuel the home burns today. Both bills exclude fixed monthly charges, which you pay for the connection rather than the heat.

The one case in Ontario that is not close

An electric baseboard converts one kilowatt hour of electricity into one kilowatt hour of heat. There is nothing wrong with that and nothing clever about it either: a coefficient of performance of exactly one is what resistance heating is. A heat pump on the same meter, at the same price, at a coefficient of performance near four, buys the same heat for a quarter of the electricity.

Because both sides are billed at the identical rate, the price cancels out of the comparison entirely. The saving is one minus one over the coefficient of performance, which is about 74 percent at the top of NRCan’s published market range and about 52 percent at Canada’s regulated minimum. It does not matter how big the house is or which electricity plan it is on, and the calculator returns the same percentage whichever you set.

On the house NRCan describes, that saving is more than three thousand dollars a year, against an installed cost the GTA market publishes at $5,000 to $12,000. Fewer than four years, and often fewer than two. This is the Ontario household that should be reading about heat pumps, and it is not the one most of the marketing is addressed to.

And the case where the answer is no

A gas furnace at 96 percent is a hard thing to beat here, and the reason is a price ratio rather than anything about heat pumps. A cubic metre of gas delivered in a Toronto heating month costs 26.87 cents and holds 0.038 gigajoules, which is about two and a half cents for a kilowatt hour of energy. The same kilowatt hour of electricity delivered on the tiered price is nearly seven times that. A coefficient of performance under four does not close a gap of seven, so the annual figure this calculator returns for a gas house is a loss, and a loss cannot pay anything back.

Three things genuinely change that answer and none of them is a rhetorical flourish. The first is the electricity price: on the ultra low overnight plan a saving appears immediately, though the payback is long. The second is the equipment being replaced, because a household buying a heat pump is often not also buying the air conditioner it would otherwise have needed, and none of that shows up in a heating comparison. The third is what the household is optimising for, since a heat pump in a gas home is bought to stop burning gas rather than to save money on it.

What should not change the answer is the framing. A payback calculator that produced a number for every input would be a marketing instrument rather than a calculator, and this one says no when the arithmetic says no.

Frequently asked questions

How much does a heat pump save a year in Ontario?

It depends entirely on what it replaces, and the two common answers point in opposite directions. Against electric baseboards, a heat pump at the top of NRCan's published market range uses about a quarter of the electricity for the same heat, which is a saving of roughly three quarters of the heating bill and pays the equipment back in a few years. Against a 96 percent gas furnace on the regulated tiered price, it costs more to run than what it replaced, and there is no payback at all. The calculator shows both because both are true.

Why does the calculator say a gas house has no payback?

Because delivered natural gas in Toronto works out at about 2.5 cents a kilowatt hour of energy, against 17 cents for delivered Tier 2 electricity. That ratio is close to seven, and a heat pump at the very best HSPF on the Canadian market moves heat at a coefficient of performance under four. The arithmetic does not close, and no amount of framing changes it. What can change it is the electricity price: switch the plan to ultra low overnight and a payback appears.

Why is the saving against baseboards always the same percentage?

Because both sides are billed at the same rate, so the price cancels out. Resistance heat runs at a coefficient of performance of exactly one: one kilowatt hour in, one kilowatt hour of heat out. A heat pump at a COP of 3.87 needs 1 divided by 3.87 of that, so the saving is one minus one over COP, about 74 percent, no matter how much the house uses or which electricity plan it is on. That is why baseboard conversions are the clearest case in Ontario.

Why is there no oil or propane option?

Because they are the cases where a heat pump wins most convincingly, and that is exactly the reason not to put a guessed price behind them. Ontario's own motor fuel price page publishes gasoline, diesel and auto propane, not furnace oil, and no other Ontario government or utility source publishing a current heating oil price per litre was found while this was built. A made up fuel price would produce the most flattering number on this site and the least defensible one.

Does the payback include the rebate?

No, and nothing is taken off for one. What Ontario's programme pays depends on the fuel your home is heated with today, on the equipment meeting the programme's conditions and on the installer being registered, none of which a calculator can know about your house. A rebate shortens every payback figure here, and by how much is a question for the programme rather than for this page. The rebate finder on this site shows which listed installers are registered for it.

What is not in this calculation?

The cooling. A heat pump replaces the air conditioner as well as the heater, so a household buying one is not also buying an air conditioner, and none of that value appears in a heating payback. Also absent: maintenance on either system, the remaining life of the equipment being replaced, financing, and the cost of any electrical work the install needs. The first two flatter the heat pump and the last two do not, which is roughly why a payback figure is a starting point rather than a decision.

Sources

Two energy prices, one consumption figure, one efficiency range and one installed cost. Every one is published by a regulator, a utility, a federal department or a named GTA installer, and none is averaged or converted from a United States figure.

If the answer came out yes

A payback under four years is worth three written quotes. Ask each installer for the HSPF of the equipment they are proposing, because that single figure moves the answer on this page more than anything else you can control. HeatPumpIndex lists 221 heat pump installers across the Greater Toronto Area; the three below rank highest on our HeatPumpIndex score.

  • Premises or work of Free Air Heating & Air Conditioning Ltd.

    OakvilleOwn site + register

    90/100 HeatPumpIndex Score

    • Says it is an HRAI member
    • Says it is registered with the TSSA
    • Says it is with the Better Business Bureau
    Ductless Mini Splits
  • Premises or work of Laird & Son Heating & Air Conditioning East York-Toronto

    LeasideOwn site + register

    89/100 HeatPumpIndex Score

    • Says it has been going since 1948
    • Says it is an HRAI member
    • Says it is registered with the TSSA
    Air Conditioning