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Swamp Cooler Air Conditioners: How the Two Cooling Types Differ

A swamp cooler is an evaporative cooler, not a compressor air conditioner. The right choice depends on humidity, ventilation and whether you need to lower room temperature.

The phrase swamp cooler air conditioner combines two technologies people often compare. A swamp cooler (also called an evaporative cooler) moves air across a wet medium; evaporation can cool the outgoing airflow while raising indoor humidity. An air conditioner uses a refrigeration system to remove heat and normally rejects that heat outdoors.

Swamp Cooler Air Conditioners: How the Two Cooling Types Differ

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Questions before you buy

What is the difference between an air cooler and an air conditioner?

An evaporative air cooler uses water evaporation and adds moisture to the air. An air conditioner uses refrigeration to remove heat from the room, usually venting it outdoors.

How does a portable air cooler differ from a portable air conditioner?

A portable evaporative cooler needs water and ventilation, and works best in dry air. A portable air conditioner uses an exhaust hose and is designed to lower room temperature across a broader range of humidity.

What is a swamp cooler air conditioner?

“Swamp cooler” is a colloquial name for an evaporative cooler. It is not a conventional air conditioner, although both are used for cooling.

Should I choose a swamp cooler or air conditioner?

Consider evaporative cooling for dry conditions with fresh-air ventilation. Choose an air conditioner when you need controlled room-temperature reduction, especially in humid weather, and can install its exhaust properly.