Controlled ventilation keeps energy-efficient homes healthy and comfortable. Learn more about ventilation.
Whole-House Ventilation
Tight, energy-efficient homes require mechanical -- usually whole-house -- ventilation to maintain a healthy, comfortable indoor environment.
Moisture Control
Controlling moisture can make your home more energy-efficient, less costly to heat and cool, and more comfortable.
Vapor Barriers or Vapor Diffusion Retarders
In most U.S. climates, vapor diffusion retarders can help prevent moisture problems, increase energy efficiency, and improve comfort in homes.
