Healthy HRV's

HRV’s (Heat Recovery Ventilator) are a healthy way to be green. Modern green building practices are producing very tight houses. They don’t breathe very well. Added ventilation is needed. The most efficient way is with a HRV or ERV. The HRV exchanges the old air for new air. In the unit, the old air heats up the new air without comming in contact with each other. This brings fresh clean healthy air into the house. Pictured is a HRV that also uses the ground to temper the air. The ground heat exchanger increases the efficiency of the HRV.