Controlled ventilation keeps energy-efficient homes healthy and comfortable. Learn more about ventilation.
When creating an energy-efficient, airtight home through air sealing, it's very important to consider ventilation. Unless properly ventilated, an airtight home can seal in indoor air pollutants. Ventilation also helps control moisture—another important consideration for a healthy, energy-efficient home.
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Tight, energy-efficient homes require mechanical -- usually whole-house -- ventilation to maintain a healthy, comfortable indoor environment.
Controlling moisture can make your home more energy-efficient, less costly to heat and cool, and more comfortable.
In most U.S. climates, vapor diffusion retarders can help prevent moisture problems, increase energy efficiency, and improve comfort in homes.
