Screened Venting & Cooling all in one!
Evaporative air coolers, also called pad or swamp coolers, have proven to be one of the most effective cooling systems for a greenhouse short of an air conditioner. It pumps water over the special cooling pads which lowers the temperature of air passing through them. A powerful fan pulls air through these pads and pushes the cooled air into the greenhouse. Hot air can be exhausted through roof vents or exhaust shutters and can be automated with one of our plug-in thermostats. The cooling pads also act as a filter and help keep out unwanted insects, dust, and pollen. These evaporative coolers have a 3 speed fan which can be used for ventilation with or without wetting the pads. They also feature a Swing function which oscillates the louvers back and forth horizontally to eliminate stagnant air and hot spots in the greenhouse. These modern evaporative cooler come with rigid media pads which are made from corrugated cellulose sheets treated with anti-rot agents. These pads provide superior cooling versus loose Aspen pads and will last for many years with proper yearly maintenence. Requires a standard 110/120 volt outlet.
Evaporative Cooler Features
- 3 speed fan with louvers that oscillate
- Long lasting rigid media pads
- LED Digital control panel with 6' cord
- Full function remote control
- Unit retains settings in power outage
- Significantly quieter than a comparable exhaust fan
- Very low power usage:
(3500VK) 1.5 amps / 180 watts
(5800VK) 2.2 amps / 260 watts
How an Evaporative Swamp Cooler Works
Nature's most efficient means of cooling is through the evaporation of water. A simple example is the cooling you feel when stepping out of a swimming pool- the water evaporates quickly from your body, taking heat with it. Our coolers do essentially the same thing by drawing hot air through wet pads using a blower. As water evaporates from the pads, it takes heat from the air with it, resulting in up to 30 degree cooler air being discharged from the cooler.
Cooling Temperatures
An evaporative cooler will normally deliver air cooler than 80 degrees F. In addition, the constant air movement created by the cooler lowers the temperature perceived by room occupants - called the "effective temperature" - by an additional 4 to 6 degrees below actual air temperature. Finally, an evaporative cooler works best in the hottest time of the day. This is because relative humidity drops as temperature increases. For example, a morning relative humidity of 60 percent at 75 degrees will drop to only 31 percent when the afternoon temperature reaches 95 degrees.
Evaporative Cooler Dimensions
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Model #
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Cabinet Dimensions
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Duct Opening
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Empty Weight
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A
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B
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C
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D
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E
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F
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3500VK
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25 1/4"
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25 1/2"
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24 1/2"
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17"
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17"
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14"
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55 lbs.
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5800VK
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33 1/4"
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25 1/2"
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24 1/2"
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17"
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17"
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14"
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77 lbs.
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Evaporative Cooler Specifications
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Model #
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CFM (Hi/Med/Low)
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Volts
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Full Load Watts
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Full Load Amps
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3500VK
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3500 / 2400 / 1300
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110/120
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180
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1.5
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5800VK
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5800 / 4000 / 2200
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110/120
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260
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2.2
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Item # 80171, 8017100, 8017120
Evaporative Cooler Installation Guide
Evaporative Cooler Operation Instructions
Evaporative Cooler Size Calculator - Not sure what size cooler you need for you greenhouse? Just enter the measurements into our calculator to find out!
Cooler Cleaning Tips - Tips for cleaning cooling pads with common household items.