📈 Estimated Payback Period
Savings Breakdown
Full Calculation Table
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How to Use the HRV Payback Calculator
Enter the total installed cost of the HRV, after any rebate you have confirmed. A quote from a contractor is better than a catalogue price, because ductwork and labour often cost as much as the unit.
Enter conditioned floor area and pick the closest of the four cities. The tool assumes an airflow of 0.05 CFM per square foot, which works out to about 100 CFM for a 2,000 ft² house.
Select the fuel that heats the house and enter the rate from a recent bill, in dollars per m³ for gas, per kWh for electricity or a heat pump, or per litre for oil.
Click Calculate HRV Payback. The result is installed cost divided by estimated annual heating savings, shown with a chart of cumulative savings against cost over 15 years.
Understanding HRV Payback
Payback is the installed cost divided by what the unit saves each year. For a heat recovery ventilator the saving is the heat it hands back to incoming air, priced at your fuel rate. This page keeps that arithmetic deliberately narrow. It does not size the unit or grade its efficiency, which is the job of the heat recovery calculator, and it is not a general tool for any HVAC upgrade, which is what the payback period calculator covers.
What the Calculator Assumes
Airflow is set at 0.05 CFM per ft² of floor area, sensible recovery efficiency at 70%, and heat recovered is airflow times 1.08 times heating degree-days (converted to Fahrenheit degrees) times 24 hours times that efficiency. Boiler and furnace efficiency then scale the fuel needed to replace it: 90% for gas, 82% for oil, 100% for electric resistance, and a coefficient of performance of 2.8 for a heat pump. For the default example, a 186 m² house in Toronto on gas at $0.58 per m³, that gives about 13 MMBtu recovered, about $234 saved per year, and a payback of 13.7 years on a $3,200 installed cost. These are gross heating savings. The tool does not subtract the electricity the HRV fans draw, so a real net figure runs somewhat lower.
The Real Comparison Is HRV vs. Exhaust-Only Ventilation
Many new Canadian homes need mechanical ventilation whether or not it recovers heat, so the fair comparison is an HRV against a simpler system that brings in the same outdoor air. Savings here come from the heat recovery only, not from the ventilation itself. CMHC modelled that comparison for multi-unit buildings and found that an HRV or ERV cut ventilation heating and cooling energy by roughly 70 to 78 per cent against continuous balanced ventilation with no recovery. Its HRV and ERV guide for multi-unit residential buildings puts the dollar savings per suite at $120 to $250 a year for gas heat across five Canadian cities. Those figures are for apartments, not houses, but they show the same order of magnitude as this calculator’s output.
Climate Drives the Savings
Heat recovery scales with heating degree-days, so a colder city pays back faster on the same house. With gas at $0.58 per m³ and a $3,200 cost, the calculator gives about 15.6 years in Vancouver, 13.7 in Toronto, 12.2 in Montreal, and 9.6 in Winnipeg. Fuel matters even more than climate. Electric baseboard heat at $0.13 per kWh pays the same Toronto house back in about 6.4 years, because every recovered kilowatt-hour displaces a dearer one. A heat pump does the opposite: at a coefficient of performance of 2.8 the recovered heat is cheap to replace, and the Toronto payback stretches to 18 years. To confirm the unit you are pricing moves the right amount of air for your house, check it against the HRV airflow calculator.
What Rebates and Lifetime Cost Change
The federal Canada Greener Homes Grant is closed to new applicants, so do not build a payback plan around it. Provincial and utility programs vary and change often; the rebate calculator on this site lists what is currently offered. A confirmed incentive lowers the cost you enter directly: a $1,000 rebate on the Toronto example cuts payback from 13.7 to 9.4 years. Payback ignores everything after it happens, so for a longer view that adds maintenance, filter changes, and fan electricity across the unit’s life, use the lifecycle cost calculator.
Upkeep Affects the Savings You Count On
An HRV only saves what it actually recovers, and that depends on keeping it running properly. NRCan’s heat recovery ventilator guide calls for cleaning the filters every one to three months and having the unit serviced along with the furnace. A clogged filter or a blocked outdoor hood cuts airflow, and with it the heat recovered, so the payback shown here assumes the unit is maintained.
Frequently Asked Questions
It depends on the city, the heating fuel, and the installed cost. With this calculator’s defaults, a 186 m² house with gas at $0.58 per m³ and a $3,200 installed cost pays back in about 15.6 years in Vancouver, 13.7 in Toronto, 12.2 in Montreal, and 9.6 in Winnipeg. Electric resistance heat pays back much faster, roughly 6 years in Toronto, and a heat pump slower, about 18 years. These figures cover heating savings only and leave out fan electricity.
No. Many new homes need mechanical ventilation whatever it costs to run, so the fair comparison is the HRV against a simpler system that supplies the same outdoor air. The savings this calculator estimates come from heat recovery alone. If a ventilation system is required anyway, the cost that belongs in the payback is only the extra you pay for heat recovery over the cheaper option.
Colder cities have more heating degree-days, so the incoming air has to be warmed further and the HRV core returns more heat each year. On the same house with gas at $0.58 per m³, the calculator shows payback shortening from about 15.6 years in Vancouver to about 9.6 years in Winnipeg. Fuel price matters at least as much as climate: the more expensive your heat is, the more each recovered unit is worth.
Yes, because a rebate lowers the net installed cost you enter. A $1,000 incentive on the Toronto example cuts payback from 13.7 to about 9.4 years. The federal Canada Greener Homes Grant is closed to new applicants, so look to provincial and utility programs instead, and only enter a rebate you have confirmed. The rebate calculator on this site lists current programs.