How Much Will An Attic Fan Cool My House

Whole house fans should provide houses with 3 to 6 air changes per hour varies with climate floor plan etc check with a professional to determine what is appropriate for your home.

How much will an attic fan cool my house.

Yes installing an attic fan raises the electric bill. This was observed on numerous days following the installation. How an attic fan works. Low cfm similar to a bathroom vent 300cfm and only in the hot spots basically by adding an inline ducting fan to the return ducts for the hotspot rooms.

If the attic fan keeps the house cool enough so that the owners leave the ac off there is almost certainly an energy benefit. As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in. Its temperature controlled so when it hits 95 degrees in the attic it turns on long enough to cool it down again. Temp 92 f at 5pm.

Good insulation reduces fan effectiveness. My idea is to vent the build up of hot air that has risen to the ceiling in the hotspot rooms into the attic so that air from cooler parts of the house can move in. This makes your whole home cooler and could allow you to turn up your air conditioner s thermostat by as much as 10 degrees while still maintaining your comfort. Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool.

In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. When an attic fan is operating during the hottest summer days the temperature in your attic can drop by as much as 50 degrees. Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed. However the utility of attic ventilation fans is actually quite a controversial topic.

During workdays would leave air conditioner off when leaving in the morning. Help your roof out. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. The attic fan kept my house cooler by 8f compared to pre fan installation days.

Of vent for every 300 sq. If the attic fan increases the comfort level of the house it may be worth it. The downside of attic ventilation fans. It provides good attic ventilation in addition to whole house cooling.