Evaporative air coolers are a good choice for places with climates whose air is hot but the humidity is low. These machines combine cooling effects of water with some steady breeze to reduce the indoor temperature. Before you take a try at evaporative air coolers, it is always helpful to know about the following things.

Evaporative air coolers combine the natural cooling features of evaporating water with air moving systems to reduce indoor temperature. The airflow is regulated by open windows to permit the cooler machine to force warm air out. These coolers can be used as the only cooling system in the room, or they can also be used to complement the already-existed air conditioning system. However, these two should not be used at the same time, because the evaporative air cooler increases humidity while the air conditioner lowers the humidity.

Evaporative air coolers will not achieve expected effects in places with humid climates or when used in rainy days. Evaporative air coolers are not as governable as those air conditioners, and they use large amount of water every hour which is worth serious consideration in places with restricted water supplies.

Whole-house evaporative air box fans are often set up on the house roof to blow air downwards. There are also some mounted on windows or in walls to blow air into the room from the side. The down-flow ones are much more popular while the side-to-side ones are much more convenient when talking about maintenance work and these can also reduce the possibility of house roof leaks. Yet both types blow cooled air into the centre of a room which is effective enough for small houses. Or in larger houses, they blow air through the ductwork. To make sure there will be effective distribution, you need to know the amount of air the cooler needs to distribute to cool your house.

Whole-house evaporative air stand fans are often made of sturdy rust-resistant and corrosion-resistant galvanized steel with heavy gauge. You need to do maintenance work according to the directions in the user manual. Yet it always does you good to check the cooler each month. Cooler maintenance work usually focuses on getting rid of any mineral build-up in draining water and the belt and water level adjustment.