Furthermore, a portable air conditioner with too many BTUs will cycle off too quickly, and a unit without an insufficient number of BTUs will not adequately cool a room. However, unlike air conditioners which rely on BTUs as a means of measuring cooling efficiency, the output of evaporative coolers is rated by CFMs.
This measurement essentially describes the cubic feet per minute of air that the swamp cooler can blow into your home, and whether you're cooling a single room or entire home, a basic formula exists for determining the proper size swamp cooler you need. Simply take the cubic feet of the intended area you are cooling and divide that number by 2.
For example, if you are trying to cool a bedroom that measures square feet with 9 foot high ceilings, your cubic footage would be feet. Divide that number by 2 and you will find out that you require a swamp cooler that offers approximately CFMs, as shown by the formula below:. Therefore, you can see that for a square foot room with 9 foot high ceilings, the CFM requirement would be , and a suitable unit with optimal CFM ratings would be the Symphony Surround.
As a general rule, choose the largest cooler within reason you can afford, and keep in mind that a large evaporative cooler with a big blower and low horsepower motor will sometimes perform better than a small model with a high horsepower motor. A higher RH will soften your cigars and can cause burn problems. A lower RH will make your cigars will feel a bit firmer.
Be careful, too low of a temperature and humidity will eventually ruin your cigars with them be too dry and even cause tobacco beetles. This is most likely due to the higher amount of oils in the wrapper leaf. This is to allow the hot air to escape outside of the building. The best approach is to open the windows or outside doors that are the furthest away from the air conditioning vents or ducts.
In the rooms with air conditioning vents, try to have an exhaust area of open window or door that is about twice the size of the vent opening. This means that the cooling effect is reduced. If you have tried all of the above and still feel your air conditioner is not working effectively, your air conditioner may need to be serviced.
Contact one of our service agents or your installer. Unlike central air conditioning systems that recirculate the same air, evaporative coolers provide a steady stream of fresh air into the house. Evaporative coolers cost about one-half as much to install as central air conditioners and use about one-quarter as much energy. However, they require more frequent maintenance than refrigerated air conditioners and they're only suitable for areas with low humidity. Evaporative coolers are rated by the cubic feet per minute cfm of air that they deliver to the house.
Most models range from 3, to 25, cfm. Manufacturers recommend providing enough air-moving capacity for 20 to 40 air changes per hour, depending on the climate. Evaporative coolers are installed in one of two ways: the cooler blows air into a central location, or the cooler connects to ductwork, which distributes the air to different rooms.
Central-location installations work well for compact houses that are open from room to room. Ducted systems are required for larger houses with hallways and multiple rooms. Most evaporative coolers for residential buildings are installed in a down-flow arrangement on the roof. However, many experts prefer to install ground-mounted horizontal units, which feature easier maintenance and less risk of roof leaks. Small horizontal-flow coolers are installed in windows to cool a room or section of a home.
These portable evaporative coolers work well in moderate climates, but may not be able to cool a room adequately in hot climates. Room evaporative coolers are becoming more popular in areas of the western United States with milder summer weather.
Small, portable evaporative coolers on wheels are now available as well. Although the units have the advantage of portability, their cooling ability is limited by the humidity within your home. Generally, these units will provide only a slight cooling effect.
An evaporative cooler should have at least two speeds and a vent-only option. During vent-only operation, the water pump does not operate and the outdoor air is not humidified.
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