However in order to be capable of reducing and regulating temperature values to acceptable ranges that will cool your attic and reduce air conditioning costs you must make a good estimation of the attic venting load required.
Solar attic fan temperature reduction.
Ad the infrared rays from the sun are powerful.
A solar powered attic exhaust fan is designed to extract air from the attic to remove all of that contained heat reducing temperature values to a cool range between 40 50 f.
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.
An attic ventilation fan with an installation cost of anywhere from 200 to about 1 300 is a common choice.
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.