Heat/energy recovery ventilators

Looking for an energy-efficient heat recovery ventilator?

In Canada, heat recovery ventilators:

  • display the ENERGY STAR® symbol if the model qualifies as high efficiency

Detailed information for manufacturers

Additional information for retailers

HRV and ERV technology and energy efficiency

HRVs and ERVs help improve indoor air quality. They exhaust stale indoor air and draw in fresh outdoor air. ERVs can also transfer moisture and so affect indoor humidity. An HRV-powered ventilation system can change all the air in a house every three hours.

HRVs are also known as air-to-air heat exchangers because they can also heat or cool incoming air which reduces your heating and cooling costs. Typically, an HRV system recovers 70 to 80 percent of the heat in exhaust air. In summer, an HRV reverses this heat-exchange process, removing some heat from the incoming air and transferring it to the outgoing air.

An HRV consists of two separate air-handling systems: one to collect and exhaust stale indoor air; the other to draw in fresh outdoor air and distribute it throughout the home. Homes with forced-air heating typically connect the HRV to the heating system ductwork. Homes without forced-air heating connect the HRV to a specially installed network of small-diameter fresh-air ducts.

Buy ENERGY STAR for high efficiency

Energy Star logo

Make shopping easy: look for the ENERGY STAR symbol.
Qualified models are the best energy performers of all makes and models on the mainstream market. They meet strict technical specifications for high efficiency—without compromising features or performance in other areas.

Energy efficiency in an HRV or ERV is rated by the unit’s sensible heat-recovery efficiency (SRE). The higher the SRE value, the more efficient the unit. Minimum levels of fan efficiency are also based on the SRE value.

HRVs and ERVs with electric resistance heaters are not eligible for ENERGY STAR.

Searchable product list

Compare current models of heat/energy recovery ventilators in our searchable product list.

For more information, read our publication Heat Recovery Ventilators [PDF - 521 KB]


The ENERGY STAR name and symbol are administered and promoted in Canada by Natural Resources Canada and are registered in Canada by the United States Environmental Protection Agency.