Heat Pump Water Heater Installation in Ontario
A heat pump water heater heats your water by moving warmth out of the surrounding air instead of making heat with a burner or an element. Natural Resources Canada rates ENERGY STAR models at up to 70% less energy than a standard electric tank, and Ontario’s Home Renovation Savings Program pays $500 toward one. We install them across Southern Ontario from our base in Concord.
Whether one suits your home comes down to four things: where the tank will sit, how warm that space stays, whether there is a drain nearby, and whether your electrical panel has room for one more circuit. This page walks through each, and through the rebate, so you know before anyone visits whether it is worth a quote.
Reviewed by the 1st Heat Home Comfort installation team · Updated 15 October 2026
What Is a Heat Pump Water Heater?
A heat pump water heater is a storage tank with a small heat pump mounted on top. A fan draws room air across a coil, the heat pump concentrates that warmth, and it passes into the water in the tank. It moves heat rather than generating it, which is why NRCan rates certified models as up to four times more efficient than a standard electric water heater.
The same tank also carries ordinary electric elements as backup. Most units let you choose how they run:
- Heat pump only: the lowest running cost, with slower recovery after a lot of hot water is used.
- Hybrid: the heat pump does most of the work and the elements step in when demand outpaces it. This is the setting most families leave it on.
- Electric: elements only, for a cold snap or a house full of guests. Efficient it is not, and ENERGY STAR notes energy use rises in the months the unit leans on this mode.
Some people call them hybrid water heaters for that reason. It is the same appliance.
Heat Pump Water Heater vs Tank, Tankless and Electric
Most Ontario homes replacing a water heater are choosing between four types. The table compares them on the points that decide the job, not on brochure claims. Rebate status was checked against Save on Energy on 15 October 2026.
| Type | How it heats | Venting and space | Ontario rebate (checked 15 Oct 2026) |
|---|---|---|---|
| Heat pump water heater | Moves heat from room air into the tank; electric elements as backup. Up to 70% less energy than a standard electric tank (NRCan) | No flue. Needs open air space, a drain for condensate and a dedicated circuit | $500 under Home Renovation Savings, assessment path |
| Gas tank | Gas burner under the tank | Chimney or power vent, gas line | None listed |
| Gas tankless | Gas burner heats water as it flows | Wall-vented, gas line sized for high input | None listed |
| Standard electric tank | Electric elements in the tank | No venting, dedicated circuit | None. Not eligible for ENERGY STAR certification |
If endless hot water for a large family is the priority, a tankless unit still has the edge, and our tankless water heater installation page covers sizing in detail. If running cost and the rebate matter more, a heat pump water heater is usually the stronger choice for a home with a suitable basement.
Is Your Home a Good Fit?
Most GTA homes with an unfinished basement or utility room can take a heat pump water heater. The limits are space, temperature, drainage and electrical capacity, and we check all four on the first visit. The figures below are from the ENERGY STAR buying guide; each manufacturer’s installation manual has the exact numbers for its model.
| What it needs | Why it matters | What we check |
|---|---|---|
| Air space around the unit | It takes its heat from the room. ENERGY STAR suggests about 1,000 cubic feet of air; many models accept less with a louvred door or ducting | Room volume, door, and whether ducting the intake or exhaust makes sense |
| A space that stays warm enough | ENERGY STAR lists 40°F to 90°F, roughly 4°C to 32°C, year-round | Winter temperature of the room, and whether a garage or crawlspace would drop below that |
| A drain for condensate | Pulling heat from air produces water, the same way a dehumidifier does | Distance to a floor drain or the need for a small condensate pump |
| Electrical capacity | Most full-size units need a dedicated 240-volt circuit; some newer models plug into a 120-volt outlet | Panel capacity and breaker space before quoting, so there is no surprise upgrade |
| Somewhere the sound is acceptable | The fan and compressor run while it heats, at a level similar to a dehumidifier | Distance from bedrooms or a finished rec room |
Switching From a Gas or Rental Water Heater
Replacing a gas tank with a heat pump water heater is mostly an electrical and plumbing job, not a gas one. The gas line to the old tank is capped, the chimney liner or power vent is removed or sealed, and the new tank goes in with its own circuit and condensate drain. Your furnace keeps its gas supply.
Three things are worth knowing before you book:
- Rental tanks. Many Ontario water heaters are rented. Check your rental agreement for the buyout or return terms before the old tank comes out; we can remove it, but the agreement decides what you owe.
- Panel capacity. An older 100-amp panel with an electric range and dryer may not have room for another 240-volt circuit. A 120-volt model, or a load check, can avoid a panel upgrade.
- Shared venting. If the old gas water heater shared a chimney with the furnace, removing it changes how that chimney drafts. We check the furnace venting as part of the job.
Homes heating with oil are in a different position again, and often replace the water heater at the same time as the furnace. See our oil furnace to heat pump conversion page for how the two fit together.
Heat Pump Water Heater Rebate in Ontario
Checked 15 October 2026: the Home Renovation Savings Program pays $500 back on a qualified heat pump water heater, and the unit must be an ENERGY STAR certified model, according to Save on Energy’s programme page.
The condition that catches people out: the water heater rebate is in the home energy assessment path. You start with an assessment, then complete two or more upgrades to receive your rebates. Heat pump water heaters are not in the single-upgrade path, where an assessment is skipped.
In practice that makes it a natural partner to a bigger upgrade. A home replacing its heating with a cold-climate air source heat pump, at up to $7,500 depending on size, can add the water heater as its second upgrade. Our Ontario heat pump rebate guide covers the amounts, and how the Home Renovation Savings Program works covers the steps.
1st Heat Home Comfort helps eligible Ontario homeowners access available Home Renovation Savings rebates for qualifying cold-climate heat-pump installations. Our team coordinates the process from eligibility review and pre-approval through installation, final documentation and rebate submission.
All rebates remain subject to program eligibility, approval and current HRS terms and conditions.
What Changes the Installed Price
A heat pump water heater costs more to buy and install than a standard tank, and saves on every month’s bill afterwards. The installed price for your home depends on a short list of things, and we price each one separately on the quote so you can see where the money goes:
- Tank size. Sized to how many people shower and how close together, with the slower recovery of heat-pump mode allowed for.
- Electrical work. A new 240-volt circuit with breaker space available, versus a panel with no room left. A 120-volt model can sometimes avoid this.
- Drainage. A floor drain beside the tank, or a condensate pump to reach one.
- What comes out. Capping a gas line and removing venting, or simply disconnecting an electric tank.
- Location. A tight closet may need a louvred door or ducting to give the unit enough air.
For the running-cost side, NRCan’s figure of up to 70% less energy than a standard electric tank is the honest starting point. Against a gas tank the answer depends on your gas and electricity rates, and we work it through with your own bills.
What Happens on Installation Day
- Site check confirmed. Air space, room temperature, drain route and panel capacity, all agreed on the first visit, so the day itself has no surprises.
- Old tank out. Water and power or gas shut off, tank drained, gas line capped and venting removed where it was a gas unit.
- New tank set and piped. Hot and cold connections, shut-off valves, a temperature and pressure relief line, and an expansion tank where your plumbing needs one.
- Condensate and electrical. Drain line to the floor drain or pump, dedicated circuit connected.
- Started and set. Filled, started in hybrid mode, and the temperature set. We show you the mode settings and where the air filter is.
- Paperwork. Model and serial numbers recorded for the warranty, and the documents a rebate file will ask for.
A straightforward swap is typically a single visit. Electrical work beyond a new circuit can add a second.
Keeping It Running Efficiently
A heat pump water heater needs a little more attention than a plain tank, and none of it is difficult. ENERGY STAR notes that most units need annual maintenance, including cleaning or changing the air filter. A clogged filter starves the heat pump of air and quietly shifts the work onto the electric elements.
- Air filter: rinse or replace on the schedule in the manual.
- Condensate line: make sure it drains freely, especially going into summer.
- Anode rod and sediment: the same checks any tank needs, and the main thing that decides how long the tank lasts.
We cover all of this on our water heater maintenance visits, and our water heater repair team handles faults on heat pump units as well as tanks.
Heat Pump Water Heater Installation Across Southern Ontario
We install heat pump water heaters across Southern Ontario from our base in Concord, in Vaughan. Each of these areas has its own location page with the services we offer there.
Ajax · Barrie · Brampton · Brantford · East Gwillimbury · Guelph · Hamilton · Kawartha Lakes · Kingston · Kitchener · London · Markham · Mississauga · Niagara · Oakville · Orangeville · Oshawa · Ottawa · Peterborough · Richmond Hill · Smiths Falls · St. Catharines · Sudbury · Vaughan · Waterloo · Welland
Heat Pump Water Heaters: Common Questions
Does a heat pump water heater work in a Canadian winter?
Yes, because it draws heat from the room it sits in, not from outdoors. A basement that stays above about 4°C works. On very cold incoming water or heavy demand, the built-in electric elements help out, which raises energy use for those weeks but keeps hot water flowing.
How much energy does a heat pump water heater save?
Natural Resources Canada says an ENERGY STAR certified heat pump water heater uses up to 70% less energy, on average, than a standard electric water heater. Savings against a gas tank depend on your gas and electricity rates, so we compare both for your home before you decide.
Is there a heat pump water heater rebate in Ontario?
Yes. Checked 15 October 2026, the Home Renovation Savings Program pays $500 for an ENERGY STAR certified heat pump water heater. It sits in the assessment path: a home energy assessment first, then two or more qualifying upgrades. It is not in the single-upgrade path.
Will a heat pump water heater make my basement cold?
It cools and dehumidifies the room it is in, because that is where it takes its heat from. In summer that helps. In winter your furnace or heat pump makes up some of it, which is why an unfinished basement or utility room is a better spot than a finished living space.
Can a heat pump water heater replace my gas water heater?
Usually, yes. The gas line to the old tank is capped, its venting is removed or sealed, and the new unit needs a dedicated electrical circuit and a drain for condensate. Your furnace keeps its gas supply. We check panel capacity and space before quoting.
How long does a heat pump water heater last?
Expect a service life similar to a quality tank water heater, provided the air filter is kept clean and the anode rod and condensate line are checked. Manufacturer warranties vary by model, so we give you the warranty terms in writing for the unit we quote.
Book a Heat Pump Water Heater Quote
Tell us what you have now (gas, electric or rental tank), where it sits, and how many people live in the house. We will tell you whether a heat pump water heater fits before anyone comes out.
Or send us the details and we will come back to you. Still comparing? See all our water heater services or standard water heater installation.
