SBF #12 Heating system

The Margin Flame View cookstove is on site. With a thermostatic damper on the combustion air supply, that will be ducted in thru 3" pipe to the dedicated air intake port.
Small fans will be located in wall ports to move the hot air from the east side of the house to the west. 2nd floor vents will let the hot air up to the 2nd floor.

This constitutes the primary heat supply.

We looked at a heat pump to be backup, but with a price of 10K for primary capacity, it did not fit the budget. The basic idea here is to spend more on insulation and less on heating.

The owner decided he wanted a backup that would keep the house from freezing and protect from any damage. He figures the house will be maintained by a friend even if they are gone and to be able to drain all systems if there is a prolonged absence.
Looking at the heating system again, it made more sense to think about how we could take advantage of the heat dump for the hot water system and combine that with a backup for both hot water and heating. So I began to look into radiators that could bring extra heat from the hot water system and be supplied by an electric boiler if needed.
This preserves one of the primary goals of limiting any possible fossil fuel use, to the grid connection.

One draft heat loss analysis gave me a loss of 15,653 Btus/hr and then you might add 20% to account for coldest situation. The goal is to use less than 1 chord of wood for the heating season.

This can only be verified after a season of use. Stay tuned.

With heat loss we also have heat gain from windows/people/equipment as well as thermal storage capacity. I do not have numbers on this currently and the woodstove is probably oversized, but serves mutliple functions well. Having all the numbers would help more precisely size the heating system. As the owners were set on the wood cookstove, it was just a matter of the amount of wood to be used.
A more appropriately sized heater would have cost less.

By the way we removed a Peerless oil furnace, two 275gal oil tanks, a parlour wood stove and a bathroom electric heater.