The Pros and Cons of Powered Attic Exhaust Fans

Powered attic ventilators are a popular choice for those looking to regulate the temperature in their attic. Most powered attic ventilators are controlled by a thermostat and turn on when the attic gets hot. The logic is that by exhausting the hot air from the attic, it will be replaced by cooler outdoor air. However, these devices can cause more problems than they solve. Here’s a look at the pros and cons of powered attic ventilators.

The Pros of Powered Attic Ventilators

1. They can help to regulate the temperature in your attic.
2. They can help to reduce your cooling costs in the summer months.
3. They can extend the life of your roof by reducing premature heat damage.

The Cons of Powered Attic Ventilators

1. They can depressurize your attic, which can cause a host of problems.
2. It’s hard to predict where the makeup air will come from, meaning it could be coming from inside your home, creating longer run times for your AC and raising cooling costs.
3. They can be noisy, making it difficult to enjoy peace and quiet in your home.


Powered attic ventilators can be a helpful way to regulate the temperature in your attic but they come with some potential drawbacks that you should be aware of before making a decision. Weigh the pros and cons carefully to decide if a powered attic ventilator is right for you and your home. It may be worth considering other options, such as adding insulation or increasing natural ventilation with attic vents. Ultimately, the best solution for your attic will depend on your individual circumstances and should be carefully considered before making a decision. If you would like for one of our professional building analyst to provide options for making your home more comfortable please reach out today for a free comfort checkup.

Happy ventilating!