Thanks for the replies, everyone. The unit is working fine, but I’ve had it for several years now, and would like to clean the evaporator coil, as I’m pretty sure it’s getting quite dirty by now. I have a 2005 40 fd model. The inlet is above and behind the bed, and I can’t see where I could get to it easily from there to clean it in place. Guess I’ll have to set aside a couple days to try pulling the unit. I’ve heard they are removed from below, but that would involve even removing the heater ductwork as it passes below the ac unit. I’ve always been told “if it ain’t broke, don’t fix it”, but I know dirty coils can lead to higher compressor pressures and shorter life. I’ll update if / when I get it done. Thanks!