Did you know that the average home has enough air leakage to add up to a two-foot-square hole? That is like leaving a small window open 24 hours a day. This is usually the biggest source of energy loss in a home. Sealing holes, cracks, chases and penetrations is one of the quickest ways to make your home more comfortable and efficient.
The energy audit identifies areas of your home that are in need of air sealing (before you insulate make sure that your home is properly air sealed).
A blower door test, performed during a home energy audit, locates air leaks. Blower door tests are performed by Home Performance contractors before and after air sealing to measure the effectiveness of their work.