Window AC / August 26, 2018 / Denise Brisette
The answer is It depends on the wall thickness. Sleeve specifications for some window air conditioner manufacturers include the maximum wall thickness before it will cover part of the louvers. For example Amanas 18000 BTU models have a max of 8.5 inches. If the wall thickness is at or below that these models can be used in as a wall air conditioner without adversely affecting function. So whats the problem if the wall covers a little of the louvers? Two things: 1) restriction of air movement and therefore reduced efficiency and 2) these units pull air in very powerfully. Cut wall edges could become loose allowing material to be sucked into the unit and potentially causing damage.
I have seen many units that are not even screwed fast. If the window air conditioner is just there balancing in the window frame it becomes very inviting for a unexpected guest. The window air conditioner is also very inefficient. These units use more power per BTU of cooling than any other type of air conditioner. If you are a light sleeper than chances are you will not want one of these window shakers. Window air conditioners are one of the loudest forms of air conditioning. The blower for these units is very loud when running. Then add the noise of the compressor and you have enough decibels to keep many people wide awake all night long.
Window air conditioners come in various sizes and it is important to choose the one that best fits the size of your room and needs of the user. The first thing to consider is to the rooms size. Using an climate control unit calculator or using the Energy Star chart for choosing a properly sized cooling appliance. For the average 150-250 square foot room youll need a climate control unit that has a capacity of 6000 BTUs. If you have rooms that flow into one another with archways or open doorways youll need to include the square footage of the adjoining room when calculating the capacity necessary to cool the area. Outside of square footage it is important to consider the climate of the room you wish to cool with an air conditioner.