I replaced an older 10,000btu unit that i pursed about 10 years ago. The wife was just tired of how loud the old one was, which at the time of purchase, wasnt rated that bad. This unit however, holy... the difference is amazing. its a lot... about 15 decibels. this was enough for my co-workers on meetings to go from complaining about the noise to not knowing i had an AC running. it also cools and controls the temp a LOT better than the old unit which was not an inverter design. all this while being considerably smaller (see photo). as i run this about 8 months out of the year, this was a huge change in comfort, and wasnt that expensive. the wifi functions work fine, but im close enough to use the remote instead. though i have turned it on remotely a few times before driving home.