Window AC / September 11, 2018 / Jacqueline Bizier
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.
When a small window unit for a large room is not enough a large unit for a small place is waste of money. So you should buy a window air conditioner appropriately based on your room space. For a space up to 350 square feet you would require 8000 BTUs. The number of BTUs grows proportionately according to your space. Window air conditioners have high-energy efficient ratios noise-free and when fitted properly cool an entire space very quickly. There are lots of types of window air conditioners from different companies available at different prices. Companies like Haier Kelon and Carrier have products starting from price ranges as low as $50-$150. They come with quiet operation function timer dehumidification air filters and much more.
If you already have a window air conditioning unit and you have noticed recently that it seems to be louder there are few steps you should take. Check to see if the unit is vibrating on the windowsill. It may need to be re-tightened on its shelf. The side panels might also be loose. Inspect those to see if they need tightening. If the unit seems to be vibrating more than normal consider sliding a piece of wood under the unit to secure it. For more tips about finding the best air conditioner check out these helpful guides: Your Guide to Finding Everstar Portable Air Conditioner Parts and Your Guide to Windowless AC Units.