Another newbie type question concerning numbers. I was looking at comparable heat pumps to what I have now. (FHP 2.5 ton open loop) I checked against a Miami Heat Pump of the same size / style (single stage). The MHP has higher eer and cop but when I look at the running amps of the compressors and blowers, the mhp has higher values so it would seem to me it would be more costly to run. So how could its values be higher but yet cost more to run ? The btu of the mhp are 39k cooling and 27k heating..where the fhp is 37k cooling and 31.5 heating. So the mhp cools better but the fhp heats better. Fhp is eer of 19.1 and cop of 3.7, mhp is eer of 26 and cop of 4.1. Same cfm of 1000. Just not really understanding these ratings... Also the heating difference of 27k vs 31.5k. Would that make a real difference in run time ?