A whole house fan is a type of ventilation system that is used to cool a home by exchanging indoor air with outdoor air. The fan is typically installed in the attic or upper level of a home and is designed to pull hot, stale air out of the living spaces and replace it with cool, fresh air from outside.
The main purpose of a whole house fan is to provide an energy-efficient alternative to air conditioning, especially during the cooler months of the year when the temperature outside is pleasant. The fan can be used to cool the entire home or just certain rooms, and it can be operated in conjunction with other cooling systems, such as a central air conditioner or a window air conditioner.
By removing hot air from the home and replacing it with cool air, a whole house fan can help reduce the temperature inside the home, improve indoor air quality, and reduce the need for artificial cooling. This can result in lower energy bills and a more comfortable indoor environment.