Thanks to merger between technology and traditional common sense, modern consumers now place an air conditioner on a table or floor and enjoy equal cooling and function of full-size models or window air conditioner units.
This novel scaled-down design even heats and dehumidifies!
At this point, our discussion will turn toward fundamentals of compact AC features and functions.
Point 1 – Bigger is not always equivalent to best. Larger air conditioners are often less energy and operationally efficient than smaller counterparts. This is due to difficulty maintaining best balance between ambient temp and humidity level.
Point 2 – BTU rating and cooling power directly correlate.
To derive maximum benefit from any portable AC design, it is essential to calculate square footage of cooled area(s).
Point 3 – Make accurate measurement of square feet. This is not difficult and entails simple multiplication. The formula is width of room x length of room.
For instance, a common length/width dimension for master bedrooms is 12′ x 12′. Thus, total square foot would be 144 sq. ft.
Point 4 – Conduct conversion of square feet to BTU usage. Following is a U.S. government agency website featured list of standard BTU capacities for portable air conditioning units. With this chart, you can easily figure out how many BTUs you need to cool a certain room. Merely make necessary adjustments of total size of specific rooms based on relative spatial position inside your home.
Suppose, for example, a room has windows that are covered by heavy drapery to keep the interior shaded. In that case, subtract 10 for the kitchen and add 4000 BTUs. If there are more than two regular occupants of a room, than add 600 BTUs for each extra occupant.
Square Footage Required BTUs:
100-150 = 5000 BTUs
150-250 = 6000 BTUs
250-300 = 7000 BTUs
300-350 = 8000 BTUs
350-400 = 9000 BTUs
400-450 = 10000 BTUs
450-550 = 12000 BTUs
550-700 = 14000 BTUs