Swamp Coolers

Environmentally friendly evaporative air coolers

If you live in a region with a hot and dry climate, you know how tough it can be to keep your home both cool and humidified without sending your power bill skyrocketing. That's why many people use swamp coolers—they're powered by the natural process of evaporation, rather than gobs of electricity and chemical-based coolants. They're effective, too: good swamp coolers have the potential to lower your indoor air temperature by as much as 30 degrees Fahrenheit.

Also known as evaporative air coolers, these climate control products are available for both residential and industrial locations. Most evaporative swamp coolers designed for houses and small businesses come in the form of an enclosed centrifugal fan armed with an electric motor that powers cooling pads. While more elaborate systems are available for larger-scale cooling operations, those designed for residential use are typically small and portable.

How Evaporative Air Coolers Work

The scientific principles used to operate evaporative air coolers are simple. Both fixed and portable swamp coolers use motors to force water onto absorbent pads, which comes into contact with the hot, dry air in the environment. This creates evaporation, a process which requires heat in order to work. Thus, heat is sucked out of the air while evaporation pushes moisture into it. Portable air coolers push the cooled air out through a fan, while centralized systems are connected to ducts which deliver the cooler, humidified air.

Benefits of Using Evaporative Swamp Coolers

Fixed and portable evaporative air coolers are one of the most cost-effective and energy efficient air conditioners on the market. Because they use no chemical coolants and require relatively little electricity to run, they are one of the most environmentally friendly indoor climate control options available. Though most swamp coolers only use about 25 percent as much electricity as a central air conditioner, the savings go beyond time-of-use energy consumption. Even the most elaborate residential swamp cooler system will only cost about half as much to install as a central air conditioning unit.

They are also easy to maintain and feed moisture into dry indoor air, increasing humidity while lowering the air temperature. This is particularly beneficial to people with respiratory conditions and allergies, as it makes breathing easier.

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