Electric baseboard heaters for an ICF house in Zone 6?
My husband and I are building a very air tight 2500 sq. ft. insulated slab on grade ICF rambler (6 inch concrete core with 2 inch foam on each side of wall) in Minnesota, and are wanting to avoid any natural gas hookup. Slab is already in so in-slab heat is no longer an option. At first we were thinking ductless Mini splits, but high up- front cost along with concern about performance during long periods of severe cold have us currently planning to put an electric baseboard heater in each room with a separate thermostat for each resistance heater. Will also have an HRV with ducts in conditioned space in built-in soffits. My husband did Manual J and also put our specs in REM/Rate and got room by room load report and figured we can heat entire home for around $1,500 per year this way because home is well insulated and designed for some passive solar. Would have generator in case of power outage. Maintenance and up-front cost are so low with the baseboards, that it seems more appealing and reliable even though not as efficient as other options we considered. Plan to install some solar down the road to help with load and could also add mini split later if not happy with electric baseboards alone. It is hard going it alone and not knowing others doing this, so looking for advice regarding this heating plan. One reason did not do in-slab heat was that I was afraid it was overkill and may actually be hard to keep house from feeling too warm since slab is a giant battery of heat even after you turn it off (a huge pro but also potential con?)
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