If you need 6000 CFM of air flow through your house divide 6000 by 750 to get a minimum 8 square feet of. Made in the USA this whole house fan is available in two sizes for cooling homes up to 3000 square feet.
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So you take your cubic feet and divide by 4.
. On the other hand an undersized unit will require some minutes more to cool the house and it can be noisier than a larger unit operating at a lower speed but just that. 30000 4 7500 cfm. Whole House Fan Sizing Calculator Enter House Square Footage ft Enter Ceiling Height ft Your Required Whole House Fan Airflow CFM Approximately CFM For Effective Cooling Approximately CFM For Faster Cooling Calculate Air Flow.
2 CFM would provide a good system 25 CFM would provide a better system and 3 CFM would provide the best system. Use these tools to calculate the right size fan everytime. You need a minimum of 1 square foot of attic air venting for each 750 CFM of air flow.
For example if you live in a 2000 sqft house you will need a whole house fan with ratings between 4000 to 6000 CFM. For example for coastal or mountain climates the recommendation is typically 2 CFM per square foot. The size of whole house fans is measured in CFM Cubing Feet per Minute.
CFM needed Area of the house x 3 Formula 1 Lets see in detail how we reached this size calculation. Ft home would need a 5000 CFM rated fan to achieve the 25 CFM Per Sq. 2200 square foot home x 8 inch ceiling height 17600 cubic feet Divide the cubic feet measurement by the CFM rating assigned to the fan.
Assuming you have standard eight foot ceilings simply multiply the total square footage of the finished living space of your house by three. The range however can be between. We suggest 2 to 4 minute single air change.
Divide 60 the number of minutes in an hour by 830 to determine the approximate number of air changes per hour the fan will provide. Whole House Fan Sizing Calculator Calculate Your Model Enter the required information in the calculator to reveal your Whole House Fan Airflow CFM. This recommendation is typically based on the location that your home is located in.
Home Sizing A Whole House Fan Sizing A Whole House Fan Option 1. Efficient Cooling 15 20 CFM Per Sq. So you dont need at 15000 cfm fan even using conventional rules of thumb.
4700 CFM Fans for a whole home area of 900-1600 square feet 5400 CFM Fans for a whole home area of 1600-2400 square feet Attic Venting Each fan needs 1 square foot of net free venting per 750 CFM. Whole House Fan Sizing Calculator Enter House Square Footage ft Enter Ceiling Height ft Your Required Whole House Fan Airflow CFM Approximately CFM For Effective Cooling Approximately CFM For Faster Cooling Calculate Air Flow. This option is recommended for homeowners who want all the benefits of whole house fan cooling with the most cost effective solution.
The same home would need a 6000 CFM rated fan to achieve 30 CFM Per Sq. For help determining the best Whole House Fan solution for your home please call our knowledgeable Customer Service team at 800-222-5932 Less than 1500 SQFT. Choose either Effective or Rapid ventilation cooling to determine Whole House Fan top speed capacity.
A 2000 square foot house with an 8 foot high ceilings has 16000 cubic feet of space 2000 sqft area 8 ft 16000 cubic feet. Whole House Fan vs Attic Fan. The answer is 723 so.
This number represents the minimum cubic. There is a simple way to determine the size fan you need for your house. Whole House Fan Sizing Method Determine your CFM rating.
Whole House Fan Sizing Calculator Enter House Square Footage ft Enter Ceiling Height ft Calculate Air Flow. Use a multiplier of 2 to 3 x the square footage of your house. The difference between the two is the maximum amount of desired airflow ranging between 1000 and 3000 cubic feet per minute cfm.
In general a bigger house needs a bigger fan. Sizing your AirScape Whole House Fan The AirScape Sierra and Ventura both come in three different airflow capacities. Home Size 1500 - 2500 sf Airflow Required 2000 - 3500 CFM Recommended Models 3200C 3400 4300 Home Size 2500 - 3500 sf Airflow Required 3500 - 5000 CFM Recommended Models 4300 5300.
A 4500 CFM system would need 6 square feet of venting. Most manufacturers recommend sizing a whole house fan at 2 to 3 CFM cubic feet of air per minute per square foot of living space. 2000 square foot home x multiplier of 2 4000 CFM.
Our whole house fan sizing tool can help you determine the right size for your home without doing a lot of math. Air King 9166F 20 Whole House Window Fan. How to size attic venting.
There are two types of whole house fans. Below is a guide based on square footage of your home that will give you a recommended Whole House Fan for your home. The attic venting you choose will be specific to your home and roof type.
Sizing a whole house fan at this rate will make you feel coolest as well as reduce the temperature in your home the fastest. We suggest 4 to 6 minute single air change. According to experts you will need a whole house fan that has a CFM rating of 2 to 3 times the square foot area of your home.
Use our easy and fast Whole House Fan Size Calculator to simplify the process. 17600 cubic feet 1600 11 What this means is that every eleven minutes the air in the home is being exchanged by a fan of this rating along with having windows open in each room. Sizing the Whose-House Fan Whole-house fans are powerful devices.
Length X Width X Ceiling Height Cubic Feet How many minutes per single air change do you require. Ft Of Living Space. A 2000 square foot house with an 8 foot high ceilings has 16000 cubic feet of space 2000 sqft area 8 ft 16000 cubic feet.
Whole House Fan Sizing Formula We use a general formula of either 2 25 or 3 CFM or Cubic Feet per Minute per square foot of living space. The most common sizing guideline for whole-house fans recommends that you choose a fan with a cfm rating that is 14 of your homes cubic feet. Calculate the cubic feet of your structure.
The estimated number of air exchanges per hour is 7. You dont have to follow conventional rules of thumb. The Tamarack whole house fan model HV1000 moves 1150 CFM per minute.
If your house is 2000 square feet with standard 80 ceilings consider a whole house fan with a CFM of 4000. The larger fans will give you a breeze while the smaller fans will provide a more moderate airflow throughout the house. 16000 cubic feet of space divided by the capacity of the fan 2000 cubic feet per minute equals 8 minutes 16000 cuft volume of air divided by 2000 cuft of air moved per minute 8 minutes to move that volume.
Just enter your homes square footage and ceiling height and youll instantly see the range of CFMs that are appropriate for the space. Simply match your home size below to see our recommendations.
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