How Long Should You Run An Attic Fan

The whole house fan is installed inside the attic between the living space and ceiling.

How long should you run an attic fan.

A whole house fan can provide an energy saving alternative to air conditioning particularly when the air outside becomes cooler at night. Simpler fan models generally have on off switches or dials that allow you to run the fan for a specified amount of time such as 15 minutes. When you have a fan you ll need to inspect it from time to time to ensure that it s working and in good condition. When is running my furnace fan all the time not a good idea.

Cons to setting fan on auto. Many homeowners are under the assumption that ventilation is only important in the summer but this couldn t be farther from the truth. The net free area of a vent takes into account the resistance offered by its louvers and insect screens. Even if your ductwork is insulated it only does so much good against those kinds of temperatures.

Taking a look at the belt and blades of each fan and checking whether there is dry rot will help you find out if the fan is in a good working condition. You ll need 2 to 4 times the normal area of attic vents or about one square foot of net free area for every 750 cubic feet per minute of fan capacity. Whole house fans work on the principle of removing the hot and humid air out of the house. It helps to cool your home temperatures and the attic by approximately 30 degrees.

The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. You may feel a less even distribution of heating and cooling because once the thermostat is satisfied the fan stops moving air to other spaces in the home. Attic ventilation will usually need to be increased to exhaust the fan s air outdoors. The fan s auto setting works with your heating cooling system so your fan is running the least amount of time needed at the slowest speed.

Ventilation in your attic is one of the most important things that you can do for your home and an attic fan is the best way to ventilate the space. There are a couple of reasons why you may not want to run your fan. Why should you maintain your attic fan. While yes ventilation is important when the temperatures are high it is just as important if not more.

If you can improve ventilation in your attic and reduce the amount of heat the space holds and pushes into your home you ll reduce the cooling load on your air conditioner and save money on your utility bills. Operation operating an attic fan is simple. Instructions for running a whole house fan. If the switch on temperature is set too low you can bet that the fan will run all summer long and create a noisy disturbance.