Quote:
Originally Posted by Sccoupe
---What gets me here is that they are 12000btu in cooling mode and 10000btu in heating mode. Does this still mean to use a 1 ton coaxial condenser?
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If it were me, I would go with a Brazed Plate HX. Not so expensive, very efficient, small, and the engineering data is abundant. Brazed plates work great in a closed-loop system that you have.
The 12K cooling/10k heating is a written confession of inefficiency.
Heating is always more efficient than cooling, because the heat energy of the compressor is folded into the output, whereas in cooling, the unit needs to rid itself of the compressor heat to deliver cooling.
Says to me that the HXs were grossly undersized to provide optimum heating.
Best,
-AC_Hacker