How a Whole House Attic Fan Cools Your Home
A whole house attic fan works by pulling cool, fresh air into your home through open windows and exhausting the hot, stale air out through your attic. This can dramatically reduce the temperature in your home, often by 10-20 degrees, without the need for air conditioning. In a city like Pittsburgh, where summer evenings are often cool, a whole house attic fan can be a very effective and energy-efficient way to cool your home. It's a great way to save money on your energy bills and enjoy a more natural and comfortable indoor environment.
Choosing the Right Size Attic Fan
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It's important to choose an attic fan that is properly sized for your home. The capacity of an attic fan is measured in cubic feet per minute (CFM). To determine the right size fan for your home, you'll need to calculate the volume of your living space (in cubic feet) and then multiply that by 20-30. This will give you the recommended CFM rating for your fan. An undersized fan will not be effective, while an oversized fan can be noisy and create too much of a draft. A professional installer can help you choose the right size fan for your Pittsburgh home.
Electrical Wiring for a Whole House Attic Fan
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A whole house attic fan requires a dedicated circuit, which can be either 120V or 240V, depending on the model. The wiring for the fan should be installed by a qualified electrician to ensure that it is safe and up to code. An electrician will run a new circuit from your electrical panel to the location of the fan in the attic. They will also install a switch to control the fan, which is typically located in a central hallway. Some fans may also have a timer or a remote control. For a safe and reliable installation, it's essential to hire a licensed and insured electrician from a reputable company like PEKC.
The Importance of Attic Ventilation
For a whole house attic fan to work effectively, your attic must have adequate ventilation. The fan needs to be able to exhaust the hot air out of the attic. If your attic is not properly ventilated, the fan can create a negative pressure, which can pull conditioned air from your living space into the attic. A general rule of thumb is to have one square foot of net free vent area for every 750 CFM of fan capacity. A professional installer can inspect your attic and recommend any necessary ventilation upgrades to ensure that your whole house attic fan operates efficiently and effectively.