How Much Will An Attic Fan Cool My House

Good insulation reduces fan effectiveness.

How much will an attic fan cool my house.

An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. 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. Yes installing an attic fan raises the electric bill. If the attic fan keeps the house cool enough so that the owners leave the ac off there is almost certainly an energy benefit.

Temp 92 f at 5pm. When an attic fan is operating during the hottest summer days the temperature in your attic can drop by as much as 50 degrees. It provides good attic ventilation in addition to whole house cooling. 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.

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. 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. 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.

These fans are designed to remove excess heat from your attic which in theory is supposed to lessen the load on the air conditioning in your home. During workdays would leave air conditioner off when leaving in the morning. Its temperature controlled so when it hits 95 degrees in the attic it turns on long enough to cool it down again. Help your roof out.

How an attic fan works. In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. The attic fan kept my house cooler by 8f compared to pre fan installation days. The downside of attic ventilation fans.

This was observed on numerous days following the installation. Of vent for every 300 sq. I believe the attic fan was just over 400. 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.