Solar Fans Vari-Cyclone Ceiling Fans Indoor Outdoor 12 24 48 Volt DC

Your search for the most power efficient ceiling fans ends right here. The Vari-Cyclone’s 60 inch diameter blades, designed by the Florida Solar Energy Center in cooperation with a major fan manufacturer; use “Gossamer Wind Technology”.

These highly efficient new fans blades can only be used with Vary- Cyclone low voltage DC fan. The Gossamer Wind Technology blades allow the fan to produce up to 40% more air flow with no increase in power consumption, making the Vari-Cyclone the most energy efficient DC powered ceiling fans available.

The Gossamer Wind Technology blades & permanent magnet, TENV (totally enclosed non-ventilated) motor with long life brushes are the main factors for high energy efficiency of Vari-Cyclone fan.


The Vari-Cyclone draws 0.5 amps @ 12 VDC (only 6 watts!) and 0.78 amps at 24 VDC. With 102 rpm the 3-blade fan produce about 1,476 cubic feet of air per minute at least 8 feet above the floor in an open room at 12 VDC.

Similarly, with 138 rpm the 3-blade fan can produce about 3,925 cubic feet of air per minute at least 8 feet above the ground in an open room at 24 VDC.

Want to view more ceiling fan with conventional look, please visit Vari-Fan webpage.

  • Blade swing: 60 inches (1.52 m) diameter
  • Weight of fan: 14 pounds (6.35 kg)
  • Shipping weight: 17 pounds (7.7 kg)
  • Amps: 0.5 @ 12 VDC 0.78 @ 24 VDC
  • Watts: 2 @ 9 VDC 4 @ 12 VDC 13 @ 24 VDC
  • RPM: 75 @ 9 VDC 102 @ 12 VDC 138 @ 24 VDC
  • CFM: 852 @ 9 VDC 1,476 @12 VDC 3,925 @ 24 VDC
4-Blade Vari-Cyclone Specifications
  • Blade swing: 60 inches (1.52 m) diameter
  • Weight of fan: 15 pounds (6.80 kg)
  • Shipping weight: 18 pounds (8.2 kg)
  • Amps: 0.5 @ 12 VDC 0.78 @ 24 VDC
  • Watts: 2 @ 9 VDC 4 @ 12 VDC 15 @ 24 VDC
  • RPM: 66 @ 9 VDC 83 @ 12 VDC 117 @ 24 VDC
  • CFM: 1,221 @ 9 VDC 1,820 @12 VDC 3,600 @ 24 VDC
Vari-Cyclone Features
  • Can be mounted flush mounted 10” below the ceiling to 48” from ceiling (16” down rod included, custom rod lengths are available)
  • The solid white body and blades are paintable
  • Body parts are made from injection molded, glass filled ABS plastic
  • The stamped steel blade arms are finished with a white enamel
  • The Gossamer Wind Blades are injection molded white ABS plastic
  • Efficient upto ambient operating temperature of 104°F or 40°C
  • Can be mounted indoors or outdoors
  • Highly compatible to work directly with solar panels during dayhours.
  • Vari-cyclone serves exceptionally both in indoor and outdoor. You can use it at porches, gazebos, pergolas, greenhouses, warehouses and cabins.
  • Download a Solar Ceiling Fan Vari-Cyclone Product Flyer

A Vari-Cyclone VC-3 in the Galapagos Islands

Two Vari-Cyclone VC-3's Sea Salt Drying by Evaporation


Why You Need Speed Control


For maximum efficiency use the optional Speed Control in conjunction with the Vari-Cyclone DC Powered Ceiling Fans. The Speed Control makes clockwise and counter-clockwise rotation possible.  Without the Speed Control the fans operate at one speed determined by the input voltage. The Speed Control outputs an adjustable 12 to 30 volts DC from an input of 11 to 24 volts DC. It has a voltage control potentiometer with an on - off switch and an output voltage reverse switch to reverse the fan's direction. It is overload protected by input and output self resetting fuses. This unit will fit in a single gang electrical box and has a white cover plate.  We highly recommend this option.  It can be easily retrofitted to an existing Vari-Cyclone fan installation.  Download a Solar Fan Speed Control 12 VDC 24 VDC Manual "Hi Ron, I installed the Vari-Cyclone fans on our main veranda and we are thrilled with how well they work.  I look forward to ordering 2 more fans later in the year." Bruce G. Batchelor, NT, Australia

Vari-Cyclone VC-3 Kangaroo Island, South Australia New 48 Volt Speed Control Vari-Cyclone fans can now be operated from a 48 VDC energy source.  The 48 volt fan Speed Control outputs an adjustable voltage to fans when connected to a 36/48 volt source. The unit includes a voltage control potentiometer to adjust fan speed, and a toggle switch that reverses the fan direction or disconnects the controller from the fan.

  • Input Voltage (DC): 33-60 VDC
  • Output Voltage (V) +/- 2% Adjustable by Potentiometer: 12.5 - 29.5 VDC
  • Output voltage can be reversed using toggle switch
  • Output Current (DC): 1A
  • Short term (2 min), current limited 1.2A
  • Download a Solar Fan Speed Control 48 VDC Manual

Ready to Order?

 Please contact us for pricing.  We usually have both models and the Speed Control in stock for immediate delivery.

We absolutely love to use 3-Blade Vari-Cyclone fan at 

The fan is almost silent at slower speed and at high speed the air volume flowed by it is amazing.

You can literally blow the mosquitoes away when sitting under the fan.  And, it can also blow the skin off the rice pudding. 

Here is a humorous Australian solar ceiling fan case study on VC-3

We have owned lots of ceiling fans including some large AC units, and none of them move as much air as Vari-Cyclone.  The amazing thing is how little energy they use!