Air infiltration (also known as air leakage) is the passage of air in or out of a building through cracks and gaps in the outside shell, or poor insulation around windows, doors and vents. It’s one of the first things that is tested when having an energy audit done, and blower door testing is often used to diagnose it. The lower the air infiltration number, the more air-tight your home or building is; therefore, homes with a lower air infiltration number are more energy efficient than those with higher air infiltration numbers.
According to the ENERGY STAR website, it’s estimated that air leakage accounts for 25–40% of the energy used for heating and cooling in a typical home. In today’s homes, builders use products such as house wraps, sealants, foams, and tapes to tighten the home’s envelope, thereby reducing air infiltration.
Harvey energy-efficient windows have some of the industry’s lowest air infiltration rates, thereby helping to decrease your home energy costs. If new replacement windows are not an option, Harvey Tru-Channel aluminum storm windows are an excellent solution. Custom made to fit the exact dimensions of your existing windows, Tru-Channel storm windows are easy-to-operate, self-contained units that provide extra insulating value.