We just purchased a home, approx 1 year old. It has a Carrier Infinity heat pump split unit (410a). I'm in Birmingham AL and the days are starting to get pretty warm. To tell you the truth, I'm not real happy with this system, so I'm nosing around it the other day checking things out. In an AC unit, the small, un-insulated copper line should be warm/hot correct? and the large insulated line should be cool/wet? Should it be the same for a heat pump?
I ask because the small line is cool to the touch and the large line is not condensing at all. I thought this line was supposed to be warm from pulling the heat from the return air?
This is on a 86 degree day when the inside temp reached 76 and the unit was running for a few hours.