Energy Guide: Fan of the Week

Written by: Gautam Sajja

With the heat of summer ravaging Walnut Creek and running your air conditioner daily being out of the question, it seems that a primary source for cooling inside the home is fans. In today’s installment of energy tips and guides, I will escort you through the benefits of fans, when to use them, and the resulting energy savings. But not just any fans, whole house fans.

Whole house fans are different than your traditional ceiling fan, tower fan, box fan, or pedestal fan. Instead, whole house fans are fans that are specifically designed to ventilate hot air from the home to the attic and then back into the atmosphere. Especially effective when the temperature outside is cooler than the temperature in the home, whole house fans are the next step in leading energy savings during the summer.

Compared to the average spending on air conditioning throughout the summer, the whole house fan can save you hundreds of dollars for a relatively inexpensive piece of technology. There are many benefits to using a whole house fan over air conditioning. A whole house fan can cool your home faster than the average air conditioner in just minutes. It also eliminates any hot spots or heat build ups in the home, preventing lingering heat waves inside. It is also important to note that older homes are more susceptible to heat than newer homes, since newer homes typically have double to even triple pane windows to increase insulation.

Choosing the best whole house fan setup for your home may take some research. This includes finding out the correct CFM, or cubic feet per minute, to figure out how much air you need to pump out of whatever size home you live in for the fan to cool the house. This is important as it allows the fan to remain as efficient as possible in the process. You can determine the type of fan you need by the CFM: the higher the CFM, the more powerful the fan is.

When choosing the perfect fan for your home, you must also determine how much air will be moved in your home based on the square footage and the average height of the ceilings. This helps determine how many air exchanges will occur per hour. Some additional information to note include the higher wattage associated with higher CFM fans and the noise level of using higher wattage fans. Typically, a belt operated fan will suppress most of the sound if silence is your preference.

Lastly, to clarify, the whole house fan has nothing to do with an attic fan. They are different: attic fans are more useful to those who store belongings there.

Thank you very much for the time to read this short article. If you have any comments or questions about whole house fans, feel free to contact us. Thanks!


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