WHOLE HOUSE FANS

INVISCO HAS MORE CFM LEVELS THAN ANY OTHER WHOLE HOUSE FAN SOURCE

Invisco is the first source to take those huge noisy ceiling fans out of hall ceilings and put them in the attic where they cannot be seen and are barely heard. This offers you FOUR excellent advantages

  1. You don’t need to open bedroom doors to get the air changed.
  2. You get to choose what rooms get more air flow.
  3. You avoid the high cost of putting more whole house fans in your home.
  4. You get proven and tested designs – each one shown below is one that is in a home.

The prices for Invisco fans are designed to be fair, not the highest and not the lowest. There are two classes of attic mounted whole house fans from Invisco –

  1. Fans that are the same size as the others in this market – typically up to 20-24 inch blades pulling air through a single duct.
  2. Fans that are larger than any others (30 inches and up ) These are patent pending and have no competition.

Nore that these are prices for the basic unit – the speed controller adds $150 to each.

HERE IS HOW TO DETERMINE THE CFM YOU NEED

How much air flow should you get? Here is an example – a 2000 square foot home with 8 foot ceilings has 16,000 cubic feet of air inside. If it is a 2 story with 1000 sf upstairs then it is likely that only the upstairs gets too hot. That means you need to cool 8,000 cubic feet.

Then – decide if you want to cool it fast or not. Using the 1 story at 16,000 CF you can choose from many options. Whole house fans come in sizes from 1000 CFM (cubic feet per minute) up to over 20,000 CFM.

If you have just a few rooms to cool, you will open windows in those rooms and pull cool air in with your fan. A 15 by 15 foot room with 2000 cubic feet will cool in one minute if you have a 2250 CFM whole house fan. That same fan will cool a 2000 SF home with 16,000 cubic feet in about 7-8 minutes.