Heat pump options
We are building a 20×32 foot cabin in inland Maine. The downstairs is open except for the bathroom and there are two bedrooms and a bath upstairs. The cabin sits on piers with a crawl space. It is pretty well insulated and with a design temperature of -2, the Better Builder Manual Z tool computes the heating load as 18K. I estimate that the downstairs load is about 12K and the upstairs about 6 — lots of big windows downstairs to look across the lake.
While one option would be to put a single unducted unit downstairs and let the heat find its way through open doors to the bedrooms, some family members are skeptical of that plan and want to shut their bedroom doors.
A second option would be to put an unducted unit downstairs and the smallest ducted unit I can find upstairs.
A third option might be to put a unit upstairs with three ducts, one of which would send heat downstairs. Could that work?
I appreciate your thoughts.
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