Solar Attic Fan Temperature Reduction

The solar attic fans all moved less than 1 000 cubic feet of air per minute cfm and they did nothing to lower the temperature inside my own attic.

Solar attic fan temperature reduction.

Although properly installed attic ventilation fans can be an effective way to cool your attic improper sealing can cause the fans to pull conditioned air through small cracks in ceilings forcing your hvac to run longer and work harder. On one hand the national renewable energy laboratory said attic ventilation reduces attic temperature 10 to 25 degrees and slows the transfer of heat into the living space on the other the florida solar energy center university of central florida found that attics with nominal natural ventilation and r 19 ceiling insulation do not need powered vent fans. Solar attic fan and expected temperature reduction i have 3rd car garage that has been re purposed as a media room and so i m trying to see if a roof mounted attic fan will help reduce the temperature in this room during summer months. An attic ventilation fan with an installation cost of anywhere from 200 to about 1 300 is a common choice.

The benefit from lowering temperatures in the attic and thus reducing heat gain from the attic into the house is usually off set by the electricity use by the fan and the increase in air leakage.