HRV vs ERV: Which Is Better for an Ontario Home?

Ben Amina — Mon, 02 Nov 2026 11:13:30 +0000

Aire One East Heating & Cooling HRV vs ERV Which Is Better for an Ontario Home? How each one ventilates, how they handle winter humidity, and how to choose Side by SideWinter HumidityDurham Region 2026 GUIDE AIRE ONE EAST DURHAM REGION ★ 4.8 Google (364)Carrier Factory Authorized24/7 Emergency ServiceFamily Owned Since 1991TSSA Licence #1219734Serving Durham Region Updated November 2, 2026 · Reviewed by Ben Amina, TSSA-certified gas technician, Licence #1219734 · Aire One East Heating & Cooling By Ben Amina, Owner and Manager · TSSA Licence #1219734 Aire One East Heating & Cooling, 1910 Dundas St E #117, Whitby The HRV vs ERV question comes up for almost every homeowner who builds, renovates, or replaces a ventilation system in Ontario. Both units do the same basic job. They pull stale, moist, polluted air out of your home and bring fresh outdoor air in, while recovering heat so you are not paying to warm freezing air all winter. The difference is moisture. A heat recovery ventilator, or HRV, transfers heat only. An energy recovery ventilator, or ERV, transfers heat and some moisture too. That one difference changes how dry or humid your home feels in a Durham winter and how comfortable it feels in a muggy summer. This guide explains how each works, compares them side by side, and shows how to choose between an HRV and an ERV for your house. Key takeaways The HRV vs ERV difference comes down to moisture. Both bring in fresh air and send stale air out while recovering heat. Natural Resources Canada calls them the most effective way to ventilate a tightly built home. An HRV transfers heat only, so it tends to dry a house in winter. An ERV transfers heat and moisture, so it keeps more humidity indoors. An HRV usually suits homes that run humid in winter, with window condensation or many occupants. An ERV usually suits homes that run dry in winter, or homes with air conditioning in humid summers. Whichever you choose, pick an ENERGY STAR certified unit rated for cold climates, and have it balanced by a professional. Short answer: in the HRV vs ERV choice, an HRV is usually better for Ontario homes that get too humid in winter, and an ERV is usually better for homes that get too dry in winter or feel sticky in summer. There is no single right answer, so the best choice depends on your home, how many people live there, and how it is built. Aire One East installs and services HRVs and ERVs across Durham Region. Call 905-576-7600. On this page Why homes need mechanical ventilation How HRV vs ERV systems work HRV vs ERV side by side HRV vs ERV: which is right for your home? HRV vs ERV in Ontario winters HRV vs ERV maintenance Key terms in this article Frequently asked questions Why homes need mechanical ventilation Older houses leaked air through gaps around windows, doors, and walls. That wasted heat, but it also let stale air out. Newer and renovated homes are built much tighter to save energy, so they need a planned way to bring in fresh air. Without it, moisture from showers, cooking, and breathing builds up, along with odours, cooking fumes, and chemicals from furniture and cleaners. You may notice it as window condensation, a stuffy feel, or lingering smells. Bathroom and kitchen fans help, but they only remove air from a few rooms and do not recover any heat. That is where the HRV vs ERV decision comes in. A balanced ventilation system exchanges air for the whole house while keeping most of the heat. Natural Resources Canada describes these systems as the most effective way to ventilate a tightly built home. How HRV vs ERV systems work In the HRV vs ERV comparison, both units have a core, a box of thin channels where the two air streams pass close to each other without mixing. Stale indoor air flows out through one set of channels, and fresh outdoor air flows in through the other. In winter, the warm outgoing air heats the cold incoming air as they pass, so the fresh air reaches your ducts much warmer than it was outside. Two small fans keep the flows moving, and filters keep dust out of the core. The difference in the HRV vs ERV comparison is the core material. An HRV core transfers heat only, so the moisture in your stale air leaves the house. An ERV core is made of a material that also lets some water vapour pass from one air stream to the other, so part of the indoor humidity stays inside in winter, and part of the outdoor humidity stays out in summer. Many systems connect to your furnace ducts, so the furnace fan helps spread the fresh air. Our furnace blower motor guide explains how the blower moves that air. The core is where heat, and in an ERV some moisture, moves between the outgoing and incoming air without the two streams mixing. HRV vs ERV side by side This HRV vs ERV table shows the main differences at a glance. HRV ERV Full name Heat recovery ventilator Energy recovery ventilator What it transfers Heat only Heat and some moisture Effect on winter humidity Lowers indoor humidity, can dry the house Keeps more humidity indoors Effect on summer humidity Lets outdoor humidity in Keeps some outdoor humidity out Best fit Homes that run humid in winter Homes that run dry in winter, or humid summers with AC Winter frost control Needs a defrost strategy in deep cold Needs a cold-climate rated core and defrost strategy HRV vs ERV: which is right for your home? Natural Resources Canada is clear that there is no single right choice. It depends on your climate, your home, and how you live. These questions point you in the right direction. Do your windows fog or drip in winter? A home with too much winter humidity usually does better with an […]

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energy recovery ventilator – Aire One East Heating & Cooling

HRV vs ERV: Which Is Better for an Ontario Home?