I need some advice on the refrigerant line size on our install. Here is the story....We had a 3 ton heatpump unit and after a few months we discovered that it was not producing enough and installer agreed to just swap it for a 4 ton and pay a little difference. This was all done and the new heatpump is working now. My concern is that with the 3 ton, 7/8 lines were needed. for the 4 ton, Goodman, recommends 7/8 up to 24 feet and 1 1/8" from 25-50. We have 30feet of line in all. The installer assured me that he spoke to Goodman and they told him that were ok with 7/8 as we were only a few feet over.
I need your opinions on this guys. Would you guys replace them? I don't want to have issues in a couple years. If it is ok though, I don;t want to spend the extra $$ and time in fixing something that will not cause any problems.
what problems or energy loss can this cause, if any?