Jeff's explanation explains pretty elegantly and clearly and his numbers are damn close
The 14000 BTU ac I picked up makes only 11,000 Btu in heat 14,000 in cool mode.
The loss Jeff explained in his post (his estimate was 12,000 Btu ) account for the lower heating efficiency of the unit in heat mode same as the manufacture claims.
Jeff5may knows his refrigeration , I mean did you get what he said ? Its real information that accounts for the 2.7 COP
That 2.7 Cop turns 1200 watt input power into 3240 watts of heat energy.
Hence the gains from "nowhere"
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