DC Fans and Coolers
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12 inch Freedom Fan 12 volt DC Efficient for long battery life. Made in USA for Home, Shop, RV,
Camping, Outdoors (not weatherproof,
do not allow fan to get wet) F030 12" 14 lbs $175 Limited Special $135 |
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20 inch Variable Speed Freedom Fan 12 volt DC Moves more air and is more efficient. Made in USA Efficient ball bearing, permanent
magnet motor quietly moves more air with less watts. Variable speed (PWM)
control with maximum draw of only 4 amps. Adjustable tilting base can point
fan to any angle. 9 foot cord plugs into cigarette lighter outlet or use
included adapter for direct connect to battery terminals. Estimated
3000 cfm on high. 1 year
warranty. |
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DC Intake/Exhaust Fans CFM = Cubic Feet per Minute Runs on 12 to 24 volt DC. This efficient and quiet air movers use a reversible permanent magnet motor and a three wing aluminum blade. Nice for ventilating houses, attics, greenhouses, barns and food dehydrators. Fan can be connected to a 20 watt or larger solar module and run when the sun shines or connected to battery to run anytime. Fans will run faster and more hours per day with a larger solar module. Fan delivers about 700 CFM on 12 volts at 1 amp and more air on 24 volts at 2.5 amps. Galvanized metal frame is 20" x 20" x 7". 16" fan with Square frame F010 25 lbs $240 |
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DC Venturi Exhaust Fans A 3-wing polypropylene fiberglass blade with a square injection molded fiberglass venturi frame for easy installation and long life. The high efficiency DC motor has a 5000 hour life at 32 Volts DC and longer at lower voltage. This design moves more air with less power and noise. Use on battery systems or solar module direct with maximum open circuit voltage of 40 volts. The CFM ratings below are for 0 static pressure and will be reduced at higher static pressures. 1 year warranty by factory. Brush life varies with load and voltage and is not covered under warranty.
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HTI Motor Replacement DC fan motor. 3" diameter x 4-1/8"
long plus 3/8" diameter x 1-11/16" long shaft. Rating at 12 volts: No load 1070 rpm at .08 amps; 860 rpm at .7 amps, 685 rpm at 1.28 amps. F013 4 lbs $99 HTI Motor Brush set of two F014 $20 HTI Motor mounting bracket for fans. Use a hose clamp to attach motor to bracket. F015 1/2 lb $10 Limited Special $2 |
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DC Axial Fans DC fans with low power draw using brushless motors. Circulate air between rooms, move heat from woodstoves or propane heaters, vent composting toilets or cool people. 3-1/5” square |
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| Catalog No. | CFM | Volts | Watts | Pounds | Price |
| F020 | 32 | 12 | 2 | 2 | $20 Limited Special $9 |
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DC Ceiling Fan.
Use winter or summer. Efficient Vari-Fan can be used with 4
or 5 blades and mounted flat on ceiling or hung from its 4” down rod (or make a
longer down rod with 1/2" thick walled plastic conduit). Reversible wood blades are light oak on one side and dark oak
on the other. Durable ABS plastic base with black matte
finish which can be painted other colors. Blade brackets have brass finish. Uses
0.4 amps on 12 volts (5 watts), 60 rpm/1500 cfm or 0.8 amps on 24 volts with twice the speed
(120 rpm/2700 cfm). Use
12/24 fan speed control (below) to allow full fan speed on a 12 volt
battery. Permanent magnet motor. Made by RCH. F060 Vari-Fan 18 lbs $250 Special $175 |
42” Ceiling Vari-Fan REVERSIBLE AIR FLOW |
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60 " Vari-Cyclone Fan
The Vari-Cyclone with the new blade design breakthrough, will outperform any other DC-powered ceiling fan available. In tests conducted by the Florida Solar Energy Center, the 3-blade Vari-Cyclone showed a 22.8% increase in cubic feet per minute (CFM) over the 5-blade, 42" Vari-Fan. The Vari-Cyclone can bring the warm air down from your high ceilings, blow a cooling breeze and keep the air circulating on your porch, classroom, warehouse, etc. The Vari-Cyclone will give you years of energy efficient, trouble-free use operating at 12 or 24 VDC, mounted close to the ceiling or installed with the 16" down rod (or use 1/2" plastic conduit). The Vari-Cyclone can be powered from a battery bank or directly from a PV panel. The classic white body and blades will fit almost any décor. Use in residential or commercial. Optional speed controls (model D357) can provide ON/OFF, reversing and full speed range from 12 or 24 volt battery.Ratings: when mounted at least 8' above floor in open room. 3-blade, at 9 volt it is 75 RPM/852 CFM/2 watts, at 12 volt it is 102 RPM/1476CFM/4 watts and on 24 volt it is 138RPM/3925 CFM/13 watts. The 4-blade will move even more air. At 9 volt it is 66RPM/1221CFM/2 watts, at 12 volt it is 83RPM/1820CFM/4 watts and at 24 volt it is 117RPM/3600CFM/15 watts. The airfoil blade shape will not move much air if fan is ran in reverse. The 4-blade fan can also be used with only 3 blades mounted. The four blade pushes more air at lower
RPMs (about 30% better at 12 Volts) but at high RPM the 3 blade actually
does better. The four blade just begins to generate more drag than airflow.
For maximum CFM at high speed, we would recommend the three blade model.
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Fan Speed Controls |
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Controls DC Ceiling Fans such as Vari-fans, Vari-Cyclone fans and small PM motors from stop to full speed. Has on/off/reversing switch, cool operating. Full Range Speed control. Works on a 12 volt or 24 volt battery, 1 amp, Output voltage is 12-28. Has
self resetting input and output fuses. D356
4 lbs $99 12 volt 1.5 amps D352 2 lbs $7012 volt 2.5 amps D359 2 lbs $75 24 volt, 1.5 amps D354 2 lbs $70 12/24 1.5 amps for 12 volt battery only. Doubles voltage from 12 to 24 volts. Provides full range of fan speeds. Fits 2-gang box. D355 2 lbs $110 12 to 24 voltage doubler without speed control or reversing. Has on/off switch, 2 amps D335 2 lbs $70 |
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DC Evaporative Air Coolers Solar Chill™ 12 or 24 volt DC Special Order 48 volts DC, 120, 240 Volts AC |
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The Solar Chill™
evaporative cooler's housing is made of stainless steel. The
efficient 8" thick wetted pad can last 5 years. The 24
has the best air flow and pressure and is be the best for use with ducts. Ducts
are not recommended but if used they should be short and oversized. 1 year warranty by manufacturer.
The 24” and 42" models ships by truck freight collect. The first 2 numbers of model
are Fan Diameter, second 2 numbers are voltage. Output diameter is 3/4" larger
than blade diameter. Max GPH is the maximum Gallons of water used Per
Hour. Water Pumps: Water is pumped
from a reservoir to the filter and evaporation media and drains back to the
reservoir. The optional clean-out pump and timer are available to empty
reservoir daily. This reduces mineral and dirt buildup and increase media life.
The circulation pump and clean-out pump are the same pump and may be used
interchangeably. For automatic water cleanout use pump on a timer. |
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| Model | Fan Dia. | Watts | CFM | PV Watts | Max GPH | H x D x W | lbs | Price |
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| 1412XP | 14 | 38-52 | 1000 | 70-90 | 3.5 | 19.3”x 21.5”x 24” | 70 | $1060 |
| 1812HP | 18 | 53-73 | 1500 | 85-130 | 6.7 | 24.5”x 22”x 24" | 90 | $1200 |
| 2412HP | 24 | 80-120 | 3000 | 120-200 | 13.3 | 34”x 22.5”x 36" | truck | $1600 |
| 4212XP | 42 | 200-400 | 8000 | 450-600 | 30 | 55"x32"x 60" | truck | $3700 |
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| 1424XP | 14 | 42 | 900 | 70-90 | 3.5 | 19.3”x 21.5”x 24” | 70 | $1060 |
| 1824HP | 18 | 60 | 1500 | 85-130 | 7.3 | 24.5”x 22”x 24" | 90 | $1200 |
| 2424HP | 24 | 85 | 3000 | 240-280 | 13.3 | 34”x 22.5”x 36" | truck | $1600 |
| 4224XP | 42 | 200-400 | 9000 | 450-600 | 30 | 55"x 32"x 60" | truck | $3700 |
12 volt Pump, for main circulating and automatic cleanout, 360 GPH 4 lbs
$3024 volt Pump, for main circulating and automatic cleanout 500 GPH 4 lbs $40
5 minute mechanical timer for cleanout pump 2 lb $30
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12 volt
Control Package with pump, timer, thermostat, switches, mounting box 6 lbs
$150 24 volt Control Package with pump, timer, thermostat, switches, mounting box 6 lbs $160 Wall mounted control box contains a thermostat, a two speed (HI/LOW) fan switch, a pump switch, and a timer for the cleanout pump. Set the thermostat and go to sleep without worrying about wasting energy or getting too cold. Run just the fan at night to conserve energy and water or just the pump for a few minutes to get the pad wet before firing up the cooler. The cleanout timer runs a pump that will flush out all the water and harmful minerals from your cooler for five minutes which extends the life of the pump, pads, and cooler box. |
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Pump Control
Timer Board,
extends pump life, higher efficiency cooling 2 lbs
$80 Pump control timer board is an electronic circuit board mounted to the back of the electrical cover plate. This board can be added to any of our 12, 24 or 48 volt coolers as an upgrade and is now installed standard on all new coolers in all voltages! What does it do? The pump board has 2 main functions: to lower the output air temperature, and to increase the efficiency of the cooler by decreasing the amount of energy used, and increasing the life of the pump by decreasing the duty cycle. The pump board has a built in timer that turns the pump on for two minutes and off for three. How does this decrease the temperature of the cooler output air? Since there is not a steady flow of water passing over the pad at all times the water held in the pad has a chance to get colder than it would if it was flowing over the pad consistently. With evaporative cooling as the pad gets colder the output air also gets colder. The pump board also lowers the amount of energy used since the pump is "on" for less than half the time, and it will as extend the life of the pump. |
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P redicted cooler performance in relation to the outside humidity and temperature. To find out if evaporative cooling will work well in your area/region, locate your average afternoon temperature and co-incident relative humidity, then locate the cooling level that may be achieved on this chart. Please note the difference in performance between 8" pad media and 6" pad media. 8" is standard. |
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The Fresh Air Cooling System
Evaporative
cooling uses a system of air flow called the Fresh Air
System. In this system, fresh outside air is brought in through
the cooler, where it is cooled and pushed through the building,
then exhausted to the outside through screened windows or doors. This type
of air circulation differs from traditional air conditioning, which uses recirculated
air, allowing the same inside air to revolve over and over again through the
building, and unlike the the Fresh Air System, works best if it is sealed
off from all outside air leakages and exchange. This causes stale and
toxic air in your home or office! These problems are known as "sick
building syndrome". |
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