A swamp cooler, also known as an evaporative cooler, is an appliance that cools an area of low humidity by increasing the moisture content of the air. The heat in the area evaporates the moisture, making the area cooler. More »

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The California Energy Commission states that swamp coolers are 75 percent more efficient than air conditioners. This is because swamp coolers evaporate water into the air, a physical process that subtracts heat. More »

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The University of Arizona recommends replacing swamp cooler pads rather than attempting to clean them. Aspen wood pads are a good choice for most swamp coolers. To extend the life of pads that are intact, owners should r... More »

When the humidity is low, the evaporation of water by a swamp cooler lowers the air temperature. These devices use a fan to pull air across wet pads to cause evaporation. The process lowers air temperature by 15 to 40 de... More »

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A dehumidifier is a home appliance that pulls excess moisture from the air inside the house. Portable dehumidifiers come in different sizes to match the area of the room. Whole-house dehumidifiers that work with heating ... More »

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An exterior exhaust vent circulates air, moisture, grease, steam and smoke to an outdoor area of a home or business. Exterior vents are often attached to major appliances, such as a downdraft oven, dryer, furnace, water ... More »

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A convection heater warms an area by blowing air across heating elements inside the appliance. The air absorbs heat from the heating elements before the air is circulated throughout the room. This type of heater typicall... More »

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