However the utility of attic ventilation fans is actually quite a controversial topic.
Attic fans not working.
Attic fan not turning on.
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.
Do not use mechanical means electric attic fans.
More than 50 of the attic fans i see do not work and have current still live to the motor.
Even with the highest quality attic fans you re likely to run into one of these common attic fan problems at some point or another.
This will indeed help reduce the temperature in the attic but only marginally unless the incoming air from outside is substantially colder not likely in the summer till nightfall you also.
Here we ll make a note of some that are specific to electric attic fans and which ones can be avoided by opting for a solar powered attic fan instead.
Good insulation reduces fan effectiveness.
Common attic fan issues.
Temp 92 f at 5pm.
Fan motor runs but not the blades.
Your attic fan may not be turning on because of an electrical problem like a tripped circuit breaker a blown fuse or a bad connection.
If the attic fan isn t turning on it could be an electrical issue a problem with the thermostat or the motor of the fan that s not working.
This heat can build up the attic temperature to high levels and heat can then percolate to lower levels.
This was observed on numerous days following the installation.
If the motor is working but the fan blades are not moving the problem may be the belt.
Temp 84f at 5pm.
The attic fan kept my house cooler by 8f compared to pre fan installation days.
The downside of attic ventilation fans.
The attic is usually built with vents that are designed for ventilation purposes.
However they are not an effective ventilation mechanism and it can get really hot in the attic during summer.
One of the leading causes for fires.
During workdays would leave air conditioner off when leaving in the morning.
Ridge vent must me installed per the manufactures instructions.
Best ventilation is open soffit venting to a open vented ridge vent.
If the attic fan is plugged into an outlet use a voltmeter to make sure that the outlet is working.