Zehnder ERV first to receive Passive House certification

Zehnder ERV first to receive Passive House certification

When a home is built to the Passive House standard, one of the key design issues is ensuring an adequate flow of fresh air for proper indoor air quality.

Today’s buildings have become tighter and more insulated due to building codes and energy-efficiency awareness and this has led to the need for proper ventilation for healthy indoor air quality. Air-tight homes not properly ventilated are susceptible to poor indoor air quality as well as mildew and moisture damage.

Incorporating a mechanical ventilation system such as a heat-recovery ventilator (HRV) or an energy-recovery ventilator (ERV) is a common solution to the problem. 

Now Zehnder America announced that it has received Passive House Institute Certification for its ComfoAir 160 ERV. This is the first Passive House Institute certified ERV in North America. In previous testing, Zehnder America had its North American Heat Recovery Ventilator (HRV) options Passive House certified and has now set a new precedent for meeting Passive House Institute Certification for an ERV unit used for mechanical ventilation in a high-performance home.

A Zehnder ERV was used in the Proud Green Home at Serenbe.

Passive House Institute Certification for an ERV unit is awarded on meeting criteria for the following categories: thermal comfort, effective heat recovery rate, electric power consumption, moisture recovery, air-tightness, balancing and adjustability, sound insulation, indoor air quality, and frost protection.

Zehnder America plans to certify more units with the Passive House Institute to offer additional units for Passive House homes. 

The Zehnder Novus 300 HRV is the highest efficiency heat recovery unit in the world. The Zehnder ComfoAir 350 HRV, the most commonly used Zehnder unit in North America, recovers more than 90 percent of the room temperature. As a result, even during a cold winter day, the incoming fresh filtered air into the house is within 2-3 degrees of the inside temperature.

Read more about indoor air quality.


Topics: Passive House, Ventilation

Companies: Zehnder America


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