Attic Fans vs. Whole House Fans – Pros, Cons & Differences

Cooling your home during summer days can be costly since we spend a lot of time inside homes. The heat is more than just an annoyance since they can damage your stored items and even your roof. Both Attic fans and whole-house fans provide a cool atmosphere. Which one is better? Which should you choose? Here is some information providing you to take a perfect decision.

Attic Fan and Whole House Fans

Attic Fan is a ventilation fan which modulates the heat level of a building’s attic by prostrating hot air. They can be gable mounted or roof-mounted. On the other hand, Whole house fans are designed to circulate air in a home or building. They are inserted between living space and attic in the ceiling.

Differences between Attic Fans and Whole House Fans

Whole House Fan: A whole house fan is a natural cooling device that reduces the need for air conditioning. They can cool the entire house in one hour. Whole house fans can replace decayed air many times in an hour and can even eliminate odors, pet dander, pollutants, and smoke. But these fans run only during the cooler evening, night and morning hours. The purpose of whole house fans is to cool your entire living space, not just the attic. For installing this, extra ventilation might be required. The defect of whole house fans is that they are costly and more difficult to install than attic fans.

Attic Fans: Attic fans reduce the attic heat buildup during the heat of the day. They only aerate the attic space. Attic fans run only during the heat of the day. They actively remove superheated air from the attic. Attic fans dehydrate the air in winter seasons and prevent ice dams while keeping your attic dry. They are cheaper and easy to install but are not energy efficient and don’t cool as well. They work best in cool and dry climates.

Pros and Cons 

Pros of Attic Fans

  • Reduces the heat of attic air
  • Lowers the heat in your home
  • Expand the duration of components in your home
  • Cheaper
  • Easier to install
  • Effective in the hottest time of the day

Cons of Attic Fans

  • Cost-efficiency is not verified
  • Draw out cool air through ceiling cracks

Pros of the Whole House Fans

  • Pulls cooler air in through windows
  • Cools your house in an hour
  • Effective in the cooler times of the day
  • Energy efficient

Cons of the Whole House Fans

  • Not suitable for high humidified areas
  • Difficult to install
  • Expensive
  • Loss of heat during winter

Both fans do different jobs. They have their own specific qualities. Installing an attic fan will be a smart move in hot regions. It turns on automatically as appropriate and will have a significant impact on reducing building heat load. When the outside temperature is lower than the indoor temperature, the whole house fan will be effective- especially in the evenings and at night.  

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