..about cleaning the condenser coils once and a while. Last weekend, my wife and I pulled up the cushions and I pulled off the ducting for the AB freezer and refrig compressors. Ugh! In just a year, they were really linted up badly. Also found one of the fans frozen which I freed up(there are two on each unit of mine). I'm sure I was getting only marginal efficiency. Something everyone should do yearly, I guess. Also, several of you guys said the 40.5 Legend's solar panel only fed the starting battery? Not on mine. It went to the house bank. But, appreciate the discussion since, by checking, I found I had mis-installed the sense wire for my solar regulator. FYI: I had a Heart 2500 installed. Possible the solar output was re-routed, altho it looked OEM. Rick D.