An air exchanger, also known as a Heat Recovery Ventilator (HRV) or Energy Recovery Ventilator (ERV) is a big box in the furnace room that exchanges the air in a home. You'll typically have four ducts ...

Q: We live in a fairly new home with an air exchanger and have noticed that we constantly have condensation. Now we are getting areas of black mold in the basement. How do we treat this, and how do we ...

Researchers at the University of Padova in Italy have proposed to improve the performance of residential air heat pumps with air-geothermal heat exchangers and have found this combination may reduce ...