How to size a woodstove for a superinsulated house?
Seems that sizing heatingunits in a superinsulated house is a real challenge! The 3000 sqf house I have built just outside Ottawa, Ontario, Canada, has R54 walls, R80 attic insulation, R25 slab insulation and triple-pane fibreglass windows. It is situated due south, and has a passive solar glazing area to floor area ratio of 11.5%. The heat load calculation determined a 33,000 btu heat load.
I am an experienced wood burner having burned wood all my life, and I am about to install a woodstove. This makes sense since we have about 20 acres of mixed hardwood bush we can manage. Given the above, how do I approach sizing the stove so as to use it as a primary heater, but not over-heat?
I have narrowed the choice down to three stoves produced by one manufactuer I respect. The stoves have the following outputs –
70,000 btus designed for a 2,000sqf conventional home
55,000 btus designed for a 1,600 sqf conventional home
42,000 btus designed for a1,300 sqf conventional home.
Any thoughts here would be appreciated.
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