Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside.
Attic fan ac save.
When a c typically costs 140 336 per month that s a savings of.
So an attic fan i think generally is a bad idea.
This means your air conditioner will not have to work as hard to do its job and may even cycle on less.
Overall this saves you energy which saves you on your monthly utility bills too.
Whole house fans such as those from quietcool can save 50 90 of a c electricity costs.
In the summer you can drastically reduce the temperature in the attic helping to lengthen the life of the roofing shingles and sheathing.
70 168 at 50 savings.
How does an attic fan work.
In colder months attic fans can help you avoid damage.
As stated above an attic fan can enable you to turn up your ac thermostat by as much as 10 degrees.
An attic fan may not reduce your air conditioning costs but a whole house fan is a different story.
Most homes already have some passive attic venting built in.
This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner.
It s always a good idea to run the whole house fan any time the air outside is cooler than the air inside.
Cool air enters the attic through soffit vents in the eaves.
126 302 at 90 savings.
Larger homes that need larger a c units can.