What a heat pump really costs over its lifetime

What counts in the cost of owning a heat pump?

Think in five buckets. The first is the installed price, which covers the equipment, labour, electrical and duct work, as broken down in heat pump installation cost. The second is energy: the electricity used for heating and cooling over many years. The third is servicing, and the fourth is repairs and parts after the warranty ends. The fifth is replacement at the end of life.

Two items subtract from the total. Rebates reduce the upfront price, and the equipment you no longer buy, such as an air conditioner or a furnace due for replacement, is a real saving. For up-front ranges and what moves them, see our heat pump cost guide.

How do you estimate the running cost?

Running cost equals the heat the house needs, divided by the system’s seasonal efficiency, multiplied by the electricity price. Here is an illustration with made-up numbers, not a forecast. Suppose a house needs 10,000 kWh of heat in a winter, electricity costs 15 cents per kWh, and the heat pump averages a seasonal coefficient of performance of 2.5.

• Heat pump: 10,000 divided by 2.5 is 4,000 kWh of electricity, or about $600.
• Electric baseboards at an efficiency of 1.0: 10,000 kWh, or about $1,500.

Swap in your own heat demand, rate and efficiency, and keep in mind that efficiency falls on the coldest days. A gas furnace comparison needs your gas price and furnace efficiency instead, and the trade-offs between fuels appear in natural gas versus electric heating and heat pump versus furnace. A better-insulated house needs less heat, which cuts the running cost whichever system you choose.

What do servicing and repairs add?

Budget for an annual or biennial service visit, the exact schedule depending on the manufacturer and the installer. See heat pump servicing: what a visit covers for what that visit includes. Homeowners can do some of the upkeep themselves, listed in the maintenance checklist.

Repairs are less predictable. Compressors, fans and control boards carry warranties for a set period, and what follows depends on how well the unit was sized, installed and cleaned. When a repair bill grows, the repair or replace decision guide helps you weigh it against a new system.

How do rebates and lifespan change the picture?

Rebates lower the cash you pay up front, but they do not change the running costs, and their terms change from year to year. Check the Government of Canada energy-efficiency pages, your provincial energy ministry and your utility for what is open now, and read how to check heat pump rebates before you sign.

Lifespan matters because the same price spread over more years costs less per year. Air-source units often last roughly a decade and a half with decent care, while ground loops last far longer than the heat pump unit that connects to them. The comparison in heating system lifespans gives the broader picture, and ground-source economics show how a long-lived loop changes the maths.

What did Drake Landing show about cost over time?

The Drake Landing community put most of its money into infrastructure that would last: collectors, boreholes and piping. After that, operating costs were mostly pumping and maintenance, and the project reported very high solar shares of the heating load (see performance results). The lesson for a homeowner is that running costs and maintenance can matter as much as the sticker price, and that the maintenance problems of the later years show why upkeep matters over a long horizon.

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