I first experienced a window-mounted heat pump a couple of days ago when the new neighbors' house started humming. It was about 40 degrees out when I went outsi

I first experienced a window-mounted heat pump a couple of days ago when the new neighbors' house started humming. It was about 40 degrees out when I went outside to where the hum was coming from. The unit in the window was blowing at lot of air at me that was colder than ambient. Not in Kansas anymore!