The 10 Best Quiet Window Air Conditioners

Editor's Notes

September 22, 2020:

The most important thing any of these units can do is effectively cool your space, and some are better at doing this quietly than others. That said, as a general rule, the more power you reach for, the more likely you're going to get some noise to go along with it. The Friedrich EP18G33B, for example, is a big unit, and it's designed to cool up to 900 square feet. Now, your bedroom might be that big, but if it isn't, this model would likely be overkill. Is it quiet for its size? Absolutely, and it would make a great addition to a small office, but it isn't ideal for most people trying to sleep.

The Midea Robust U Inverter, conversely, has a particularly low sound output and still boasts a 10,000 BTU rating. Now, the company achieves this by employing an unusual body design that allows you to almost completely close your window on it, using the glass as an added layer of soundproofing where most other models simply have those accordion-style winges to dampen sound and keep bugs out.

You're also likely to see noise ratings listed as dBA, as opposed to the more common decibel rating abbreviated simply dB. The difference is that dBA takes the mechanics of the average human ear into account to convey the actual perceived sound level, as opposed to the pure sound level picked up by a dedicated instrument.

January 01, 2019:

Added models from brands well-known for creating quiet cooling systems that are also reliable and easy to install. In addition to choosing one that’s designed to produce minimal noise levels, you can also help achieve a quieter unit by making sure the power cord isn’t frayed or worn down, keeping the filter clean, replacing any torn or missing insulation, and ensuring the fan’s blades are situated straight.