So I ran open loop the first winter last year and my output at the register was 88-90 in first stage, 95-97 in second stage. EWT 56. This winter I converted to closed loop. What a big disappointment. My ewt is 32, lwt 26, even if it was 40 ewt, temperature at the register was still only around 82 in first stage, and 85 in second. I disabled a loop because there's a kink somewhere. It's comparable to a standard heat pump temperature rise. I've read that open loop is high maintenance, etc. That was not the case for me. I have good water, so no scaling problems. The heat pump will not keep up in closed loop, so when the temperature is below freezing at night I switched back to open loop. Sort of a hybrid setup. There is no way I'm going to run heat strips when I can pump and dump to maintain my temperature. What am I missing here? I should have stayed open loop and saved some cash. My electric bill is unchanged.