It may seem counterproductive to run your fan and your air conditioning at the same time since both use energy to operate.
Run attic fan and ac at same time.
The trick is to use them wisely and on lower settings.
The attic fan consumes much more electricity than any possible saving from reduced air conditioner run time.
If it s 80 degrees outside that means setting the ac to run at 78 or 75 instead of 70.
This means running the whole house fan will cost approximately 90 percent less than running a central air conditioning unit for the same amount of time.
This can cause problems with your thermostat and overall hvac system.
Whole house fans work on the principle of removing the hot and humid air out of the house.
If you were to turn on the air conditioner your air conditioner will work very hard because it will work hard trying to.
The whole house fan is installed inside the attic between the living space and ceiling.
Running the fan for a long period of time with any system central air or window box will also increase the humidity in the room.
One energy concern with whole house fans is heat loss in the winter.
However if the air outdoors is cooler than the air indoors it doesn t make a whole lot of sense to turn your air conditioning system on.
Today ceiling fans are the best selling variety of fan in the united states.
For the ac this means keeping the thermostat closer to the temperature outside.
Essentially you can use your ac unit and your whole house fan together.
That s why the energy required to run an attic fan is wasted.
The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows.
During the summer there is always a benefit to a cooler attic.
Typically people who live in areas that get hot during the day and cooler at night often turn their whole h.
Since sunlight on the roof is the major source of attic heat attic fans are most useful during daylight hours.
When your fans are powered by the sun and set to start automatically they ll run exactly when you need them without you having to flip a single switch.
The drawback is that you will also draw in the humidity of the outside air.
Both types of attic fans are popular as solar powered equipment.
It is important to remember that you should never use the fan mode for a central air conditioning unit the same way you use a regular room fan.
