can i operate exhaust only on hrv to pull air in through windows
An HRV or ERV has two fans, one to exhaust stale air from the house, one to supply fresh air into the house, and a heat exchanger to transfer heat or energy from one airstream into the other.Depending on the unit selected there will be a choice of controls to operate the unit in properly.During the heating seasons, heat is transferred from the warm indoor exhaust air into the cold outdoor supply air inside the HRV heat exchanger.epending on the unit selected there will be a choice of controls to operate the unit in properly. During the heating seasons, heat is transferred from the warm indoor exhaust air into the cold outdoor supply air inside the HRV heat exchanger.