It is vital to consider the decibel level for any portable AC unit before you choose to invest in it. Some of the most common complaints about these units, aside from their bulk and their cost, is the fact that they are very noisy.
This noise is often characterized by a loud, humming sound such as white noise or a jarring clanking sound when the compressor engages and the related comments about this noise tend to be similar from one review to the next.
It’s hard to criticize consumers for complaining about excess noise given that this is a subjective feature. In reality, however, most portable AC units report noise levels that range from 50 decibels to 56 decibels, which falls below the average conversation of 60 to 65 decibels.
And the consistency among these makes and models is easy to understand as well, given that all manufacturers of these devices likely recognize that most buyers are concerned with noise and have thus, made a concerted effort to reduce it to the extent that they can.
Nonetheless, in spite of the fairly small variations between unit noise level ratings, there are major variations in consumer reactions – even when the very same AC model is being reviewed!