Evaporative & Swamp Coolers
Water-evaporation coolers that chill a room for a fraction of AC running cost.
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How to Choose an Evaporative Cooler
Best in dry heat (<60% RH).
Where
Best in dry heat (<60% RH); weak in humid areas.
Specs
Larger tanks and rigid pads cool longer and more effectively.
Room size
About 1 CFM per sq ft; 400 sq ft ≈ 400+ CFM.
Add ~10% capacity for sunny rooms. Because they add moisture, avoid them in already-humid spaces where a fan or AC is the better tool.
Featured Evaporative & Swamp Coolers
AirCirco Air Cooler Fans series.
Frequently Asked Questions
Quick answers — surfaced in Google AI Overviews and chat engines.
Do evaporative coolers really work?
Yes in dry air — they evaporate water to drop temperature 5–15°F cheaply.
Evaporative vs air conditioner?
Evap is far cheaper to run but adds humidity and needs dry air; AC removes heat/humidity.
How much water do they use?
About 1–5 gal/hr by size; 10L models run several hours.
Are they good in humid climates?
Not really — above ~60% RH they lose effect. Choose a fan or AC instead.
What size do I need?
About 1 CFM per sq ft; a 400 sq ft room wants 400+ CFM and a 10L+ tank.
Related Cooling Guides
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