Department of Energy

Ventilation

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Controlled ventilation keeps energy-efficient homes healthy and comfortable. <a href="/node/1265726">Learn more about ventilation</a>.

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.