Air conditioners which are window mounted are less expensive to run if you just want to cool a single room. Depending on their size, they can be removed in winter to prevent drafts.
Getting the right size of air conditioner for the size of the room is important. A unit that is too small will waste energy by running constantly without cooling the room properly.
A unit that is too large will cost more and use more energy as well as not cope with removing humidity and leave the room clammy and damp. The right size of air conditioning unit will cool and remove humidity effectively. You may add or increase the BTU requirement below depending on the number of people in the room and if the room is shady or sunny.
Portable Air Conditioners
These cooling units often come on wheels to be moved from room to room. They send the hot air out a through an exhaust duct similar to a clothes dryer. The exhaust duct usually connects to a window.
Portable Evaporative Air Coolers
These portable units use water to cool a personal space up to 12 degrees. Unlike an air conditioner which dehumidifies, evaporative air coolers evaporate water into the air, consuming the heat that was in the air. The cool air is then blown into the room.
Three air conditioners with good consumer reviews online are:
- Kenmore 75050 (5000BTU) for small bedrooms
- Kenmore 75062 (6000BTU) for about 200 square feet of room
- Kenmore 76081 (7800BTU) for about 400 square feet of room
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