Forced air is forced air ... isn't it?
All this talk about ductless minisplits is making me dizzy. If a forced air furnace gives a bad atmosphere in a building, doesn't a minisplit per room just give many bad atmospheres?
Dana reminded me on another post that a forced air furnace increases infiltration/exfiltration. Well, why doesn't a minisplit heater or cooler do the same?
When air blows past my skin, it makes me cool due to evaporation. Heated air still causes evaporation. Ductless minisplits blowing air into the room from above means air blowing into my face from above. Just not pleasant, even if the diffusion technology is much better (than conventional forced air), the air in the room is moving and there is an atmosphere of abnormal mechanical convection and cross current flow.
If ductless minisplits - to be able to handle cold temperatures - cost several thousand $'s per ton, how can they possibly be a better buy than a good old (yuck, I hate them) ducted forced air that cost much less for the same BTU's?
I am not getting it. With such high capital outlay costs, what is the attraction? Why not go with zoned electrical radiant space heating solutions in each room? Heating things still remains a better strategy for building performance and occupant comfort than heating air.
Are we not conspicuously overrating a technology (ductless minisplits) that can be beat $ for $ and comfort feature for comfort feature by other solutions?
Posted Aug 19, 2014 8:15 AM ET
Edited Aug 19, 2014 8:16 AM ET
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