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How to Size a Whole House Fan
When you browse the whole house fan selection at Air+Health, you’ll see an assortment of specifications that may seem confusing. Between the wattage, CFMs, grille dimensions and more, it can start to look like you need a building contractor to determine how to size a whole house fan for your needs. Use our easy and fast Whole House Fan Size Calculator to simplify the process. Just enter your home’s square footage and ceiling height, and you’ll instantly see the range of CFMs that are appropriate for the space.
Your Whole House Fan Airflow CFM
|
Approximately CFM For EFFECTIVE Cooling |
Approximately CFM For RAPID Cooling |
For information on selecting an Air+Health whole house fan, contact us here or give us a call at 866-765-1587.
Choose either Effective or Rapid ventilation cooling to determine Whole House Fan top speed capacity. Then match your results to the corresponding Air+Health model below.
Need some more information on what model is right for you? Give us a call at 866-765-1587 or contact us here.
| Fan CFM(Cubic Feet per Minute) | Model |
|---|---|
| Up to 2369 | CA-2 |
| Up to 3339 | CA-3 |
| Up to 4590 | CA-4 |
| Up tp 5902 | CA-5 |
| Up to 5951 | CA-6.5 |
| Fan CFM(Cubic Feet per Minute) | Model |
|---|---|
| Up to 2576 | EV-2 |
| Up to 2740 | EV-3 |
| Up to 4522 | EV-4 |
| Up tp 5224 | EV-5 |
| Up to 6056 | EV-6.5 |
Why CFMs Matter
CFM stands for cubic feet per minute. This number indicates the amount of air a fan can move through a room when it’s operating at its top speed. The larger a space is, the higher the fan’s CFM must be to cool it with any level of effectiveness. If the CFM is too low, the fan will not be able to deliver energy efficiency and the room will feel too warm. For example, look at how to size a whole house fan for an average 1,620-square-foot home with 10-foot ceilings: The whole fan size calculator indicates a minimum 4,050 CFMs for effective cooling and 5,062 CFMs for rapid cooling. That means a Cascade Series 5 will work faster than an Everest Series 4, but either will work in your home.
Breathe Easier with Air+Health
We’re on a mission to clear the air in your home. From portable air purifiers that eliminate pathogens with UV technology to whole house fans that help save on cooling costs, we’re your partner in helping your whole family breathe easier. If you still have questions on how to size a whole house fan, contact us for knowledgeable assistance.