The rules in NL at least are 45dB during hte day, 40dB at night, at property line. Our machine in "silent" mode is around 42dB ~60cm from the unit, and we can

The rules in NL at least are 45dB during hte day, 40dB at night, at property line. Our machine in "silent" mode is around 42dB ~60cm from the unit, and we can get it to 40dB with a little distnace from property line and a sound barrier between it and the neighbour. It really is _shockingly_ quiet compared to the dull roar of AC that was ubiquitous to me growing up in central California. (40 dB is "faint" or "computer/babbling brook according to https://soundproofingguide.com/decibels-level-comparison-chart/ https://soundproofingguide.com/decibels-level-comparison-cha... ) Neighbours still whine about it though. I think they dislike A/C on principle, though.