Instructions for running a whole house fan.
How often should attic fan run.
An attic fan doesn t require annual maintenance.
Attic fans exhaust hot air from your attic to the outside.
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.
Temp 92 f at 5pm.
A whole house fan can provide an energy saving alternative to air conditioning particularly when the air outside becomes cooler at night.
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.
Good insulation reduces fan effectiveness.
Once your home reaches a certain temperature the fan should switch off automatically.
If the attic fan increases the comfort level of the house it may be worth it.
However the utility of attic ventilation fans is actually quite a controversial topic.
Of course if the attic fan isn t working correctly and is running all year long that would be a significant problem.
You might notice that should you need a new fan or.
One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.
If your attic fan seems to be running constantly it would be a good idea to bring in a professional to check it out and make sure it s still working properly.
An attic fan doesn t need to run all the time only when the air outside is cooler than the air inside your home.
The attic fan kept my house cooler by 8f compared to pre fan installation days.
This was observed on numerous days following the installation.
Older attic fan models may have a manual switch.
How an attic fan works.
Temp 84f at 5pm.
After attic fan installation ac still off during day.
During workdays would leave air conditioner off when leaving in the morning.
If the attic fan keeps the house cool enough so that the owners leave the ac off there is almost certainly an energy benefit.
An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic.
Attic fans perform this ventilation by pushing hot air out into the environment while also pulling fresh cool air into the attic.
