REFRIGERANT SWITCH: A Greenheck DGX-P116 Makeup Air Unit. Greenheck Fan Corp. has begun offering direct gas-fired makeup air ... Compared to standard coils, microchannel coils are on average 40% ...
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Choosing Your Best Heating System for the HouseThese are the three types of ducted home heating systems: A furnace blows heated air through ducts, and the heated air is ...
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