August 1, 2017. The ES-6400 is now $1795. But it is being advertised for $1395. To learn how to get that price, call Kurt at the number above.

QuietCool wants $1,848 for their ES-6400 

See this message from Kurt, Founder of Invisco.

z2017 fan on hanging ryans rental   final-test-spinning  avertical blade

Above is the rafter mounted model hanging from the “Easyup” bracket. Next to it is the roof mounted fan in test and to the right the new 2017 propeller that has a big 50 degree bite and 8 blades! 

The roof mount is ideal for Mid Century Modern homes. More here eichler banner

August 2017 has seen some unusual installations. The best one is the latest – in Alan’s home in Winchester. His attic is full of obstacles so Kurt was forced to make a unique mount for it. Here is a picture of it taken on August 14, 2017 – in it you can see two innovations – one is the “EasyUP” bracket that simplifies installation. The other is the small bolt at the lower right. Look at the next picture for a closeup. 

8 es6400 w collar bolt 600 wide

Below is a closeup of the bolt. It is designed to hold the duct collar in place during installation. The collar has the flex duct taped all around so the collar needs just that one bolt for perfect alignment. 

collar bolt

February 14, 2017, Invisco gets first 2017 order from Cliff in Orange, California! He bought the high performance ES-6400 attic mounted whole house fan after seeing all the excellent testimonials here .

Here is what Casey in Salt Lake said on YELP: “whisper quiet as far as motor sounds go- the only thing you hear is the air moving. And boy, can it move air if you need it to! Generally I keep it at about half to 3/4 power unless I really need to cool things down fast, then jet engine air movement at full power does the trick.”

Gearard, in Murrieta, California, was delighted when he turned his new Invisco system on and saw the wind (not a breeze) fly into his master bedroom window.


  1. *Mark in  Brisbane Australia February 2017
  2. *Billie in Temecula California June 2012 and August 2016
  3. *Charles in Solana Beach California August 2016
  4. *Casey in Salt Lake City Utah June 2015
  5. Dan in Waunakee Wisconsin December 2014
  6. Richard in Banning California June 2014
  7. Sheldon in De Luz California August 2013
  8. Wells HERO program install April 2013
  9. Steve in Corona California June 2013
  10. David in Corona California July 2013
  11. David in Gun Barrel City Texas May 2013
  12. *Kimberley in Temecula California April 2013
  13. Chris in Bristol Rhode Island June 2012
  14. Gearard in Murrieta California June 2012
  15. *Paul in Indianapolis Indiana August 2012
  16. *Adam in Yucaipa California October 2011
  17. Matthew in Murrieta California April 2011 
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