January 15, 2015 Invisco announces new roof mounted fans in metal enclosures in performances of 2500, 3600 and 4700 CFM all variable speed.

NEW FOR 2014 – SmartSpeed ™ automatic speed control. See it here.

More CFM options than any other source – from 1200 to OVER 29,000!

More HP options than any other source – 1/3, 1/2, 3/4, 1 and 1.5 HP for more CFM!

Below is the Invisco IN3620 whole house fan in an attic.
The 7 custom molded blades give you the best air flow you can find.
The  motor at the center gives you an INFINITE number of speeds! All of these compatible with our patented SmartSpeed(tm) control.

Model CFM Dia Home SF Price Variable?
IN1200 1200 12 400-600 650 Yes
IN2500 2500 16 800-1200 750 Yes
IN3620 3620 18 1200-1800 850 Yes
IN4750 4750 20 1600-2400 1100 Yes
IN7240 7240 2 18s 2700-3600 1600 Yes
IN9500 9500 2 20s 3600-4800 1990 Yes

Remember –  all Invisco systems are guaranteed for 15 years!

Save more money when you add an Invisco system to your solar system! The second line should say “Reduce Solar Installation cost an average of 15%”

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Need to replace your old ceiling mount? Invisco has the best replacement fans you can find in 24 inch, 30, 36, 40 and 46 inch diameters – all belt driven, all infinite speeds, all work with our patented SmartSpeed(tm) automatic speed control! 

All Invisco systems come with everything you need to install them, switch them on and off and control their speed.  And you get the highest energy efficiency ever offered in history when you add the SmartSpeed(tm). We think it is a smart idea.

Want to see the average temperatures in YOUR area? Click on  Average Temps

Invisco is now an every1rewards merchant. See what that means for YOU and your CAUSE here.

R38, R49 and R60 INSULATION FOR COLD CLIMATES Invisco engineers have developed the first R60 insulated ceiling duct adapter. Meet IECC2012. See the details here

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Below are the IN3620 Operating Specifications:

Motor specification - Watts 550, RPM 1465, 3 sones measured under the installation location with standard attic insulation installed and attic hatch closed.

Shown above is the fan with steel chains at the top for hanging from your rafters. It has a collar on the back for  one 18 inch duct for maximum air flow.  To be sure that every bedroom can get maximum ventilation with the door closed, look for our “door jump duct” kits.

Invisco includes a 6 foot long AC cord (longer if you want as an option). This kit also includes one Vari-Speed controller to enable you to take advantage of continuously variable speed from high speed to as low as you want. Note that the air flow is cut by 75% at half the rpm. And, of course, the sound at low rpm will be almost silent. The kit includes a beautiful white ceiling frame and cube core grille.


This kit also  includes 15 feet of 18 inch uninsulated ducting (no insulation is needed because you will put the air shutoff damper right above the hole in the ceiling).

The kit also includes an 18 inch damper that  has straps to hold it down so you can attach the duct without it moving.

A damper is included for above the hole in your ceiling. It has 2 straps to hold it in place while you attach the duct.

Don’t forget the best news – your Invisco system is guaranteed for 15 years. The components are highest quality.

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