Attic Heat Recovery System

The reason to use ventilation system with heat recovery is so you minimize heat gain or loss so putting it into unconditioned space kind of defeats the purpose.

Attic heat recovery system.

In a nutshell warmspring is basically the combination of an attic ventilation fan with a compact air to water heat exchanger. Heat recovery ventilators reclaim energy from exhausted stale indoor air to temper incoming fresh air heat is retained during cooler seasons and removed during warmer seasons. A heat recovery system works also called hrv or mvhr via a heat recovery ventilation unit which is usually located in the attic roof space or plant room of a building. These systems capture about 70 percent of the energy already expended to temper incoming air.

Intake vents located at the lowest part of the roof under the eaves allow cool. A strong ventilation system was the answer and its secret weapon was a heat recovery ventilator aka an air to air heat exchanger. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. If you put this system in unconditioned space say a vented attic the outdoor air being delivered to the house will pick up or lose heat on its way.

One of the most visible and perhaps even iconic features of a super energy efficient home is the heat recovery ventilator hrv. Hrv systems are designed to be ducted whole house solutions. The result is better indoor air quality and lower energy use than in standard homes.