Anway to reduce noise on defrost mode? Noise complaints from condo neighbors from entering defrost mode. The noise from r410a is much greater than R22 because of the greater pressure. Does anyone have a solution to this? These units don't have quite shift like the better units which of course land lords refuse to invest in. On developmen actually banned the homeowner from using the heat pump at night because of the noise if you beleive that. I can see how i could be come quit annoying at night while trying yo sleep. I jusy dont want gain a bad reputation. any suggest are greatly apppreciated grentalman.