Jim wrote:

you can buy sealed stoves that draw air in through a duct.

They had a woodburning stove that did just that. Supposedly kicked out a
mere 1.2kW of room heat and 10kW for water heating to top up the input
from the solar panels to a heatbank. Also heat exchanger to warm the
fresh air intake from the stale exhaust air, with the ability to add
more heat to the intake from the heatbank if required.