Why Does My Bath Fan Run Constantly? Is it for mechanical ventilation?

Описание к видео Why Does My Bath Fan Run Constantly? Is it for mechanical ventilation?

ENERGY STAR and many new building codes require the use of some type of automatic mechanical ventilation system to provide fresh air exchanges in new homes. If your home has air quality issues, it may be lacking one of these systems. The easiest system to install and maintain is a continuous running bath fan.

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