Evaporative coolers are well suited for climates where the air is hot and humidity is low. These machines combine the cooling features of water with a steady breeze to lower indoor temperatures. There are several important factors to consider before you buy evaporative air coolers.

Evaporative air coolers lower indoor temperatures by combining the natural cooling properties of evaporating water with an efficient air moving system. This combination of moisture and a steady breeze can lower indoor temperatures. Airflow stand fan is controlled by opening windows to allow the unit to push warm air outside.

Evaporative air coolers can be used as the sole cooling system, or to complement existing air conditioning systems. However, they should never be used at the same time, as the one increases humidity while the other removes it.

Evaporative coolers are most effective in areas with low humidity and hot temperatures. They are not effective in humid climates or during rainy seasons. They are not as controllable as air conditioners, and can use much water per hour, which is a consideration in areas with limited water supplies. The degree of humidity they deliver is a feature that distinguishes the two basic types of evaporative cooler box fans.

Most whole-house evaporative coolers are mounted on the roof and blow air downwards, while the others are mounted through windows or walls and blow air in from the side. Down-flow installations are most popular, but the window/wall-mounted units are more convenient for maintenance and reduce the possibility of roof leaks. Both down-draft and window-mounted units blow cooled air into the house into a central location which is effective for small homes, or through existing or specially installed ductwork in larger homes. To ensure effective distribution, you’ll need to know how much air the unit needs to move to cool your home, and this is measured in cubic feet per minute.

Most whole-house evaporative air cooler housings are made of sturdy rust and corrosion-resistant heavy gauge galvanized steel. You should perform maintenance according to the directions in your unit’s owner’s manual, but a good rule is to inspect the units monthly. Maintenance is usually centered on draining water to remove any mineral build-up, and adjusting the belt and water levels.