super insulated home with minisplit?
We are building a highly insulated home in zone 5 (min temps -20F but not often). 1800 sq ft. r-40 in the walls. r-60 roof. Triple pane windows. We looked at geothermal but are backing away for cost and the likelihood we are overbuilding. Our builder thinks Mitsubishi minisplits would work well. Cost about 15k.
We think this would include 3 interior units (details aren't totally worked out).
Does this seem a good way to go?
If so, why?
If not.... why not?
We'd have wood as a backup heat.
We're lost in the weeds here and need some insight!