Attic Vents and Fans

Many homeowners are unaware their attic is a critical component of the home’s HVAC system. It plays a vital role in regulating temperature and airflow throughout the house. The attic also protects your home from moisture and mold damage, which can lead to costly repairs. You should have good quality ventilation installed to stop ice dams from forming on your roof during winter months and extend the life of shingles. This article discusses some basics about attic vents and fans, so you make informed decisions regarding services like installation or repair.

Attics, Attic Vents, And Attic Fans. What Are They?

Your attic is typically the space between the roof and the ceiling of the highest floor of the house. It is often used to store things like out-of-season clothes, holiday decorations, or old furniture while also serving an essential function in regulating temperature and airflow throughout the house.

Attic ventilation refers to an air-exchange system designed to pump fresh, cool air into the attic. It also removes warmer, humid air from inside your home and stores it in the attic until you need it again.

An attic vent or fan helps with this process by providing a way for hot moist air to leave through an opening at the top of your roof.

A good-quality attic ventilation system will not only prevent damage from moisture and mold but also stop ice dams from forming in the winter. In addition to this, it extends the life of roof shingles by preventing heat buildup in your attic. 

What Type Of Ventilation Do I Need For My Attic?

There are two types of attic ventilation systems – Active and Passive Ventilation. Active ventilation systems use an electric fan to push air through your roof vent and passively allow hot, humid air to escape. Passive attic vents, PAVs, rely on natural convection of heat for airflow in order not to require electricity or any other power source. This is why passive attic vents are recommended for homes built before 1978 which were not built with electric attic vents.

Active vent systems are more common because they provide a higher level of attic ventilation. Still, passive venting is also an option for homeowners who wish to avoid using electricity or other power sources. Passive ventilation can be used in older homes that were not constructed with them and provide less airflow than active ventilation systems.

Today there are clean technology PAVs powered by solar systems. A1 Home Insulation experts will assess your home and inform if your home needs more vents.


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