There is a right way to size an A/C appliance for optimum cooling

The size of the air conditioning appliance does not refer to the physical dimensions of the air conditioning unit.

Instead, it refers to its cooling capacity measured in British Thermal Units (BTUs).

Whether you intend to install a central air appliance or a window air conditioning, you will achieve optimum efficiency. Therefore, lower utility prices if you choose your air conditioning appliance based on the size of your dwelling or the section your unit must cool. To choose what air conditioning appliance size is appropriate for your dwelling, first, you will need to calculate the size of your dwelling’s areas that the air conditioning will serve in square feet. To calculate the size, multiply the width times the length of the section to be cooled down. The total results are then multiplied by 25 BTU, which is a fairly practical number. This size will allow enough cooling under any climatic condition, be it a rainy, hot, sunny, moist, or humid day. For instance, given a room that is 12 feet wide by 15 feet long, you will basically multiply the length by the width 12×15 to get 180 Square feet. The 180 square feet will then be multiplied by the 25 BTU per square foot to get you the minimum BTU air conditioning appliance you should install in your space. This means 180 × 25 = 4,500 BTU cooling capacity is necessary for your space. While smaller BTU appliances will run continuously to keep up with your temperature requirements, having too many appliances will cool too hastily but won’t take away the moisture from the air.


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