Bud,
We have an 80,000 BTU gas forced-air system with carefully placed cold-air returns (with filters), but it still means frequent filter changes. The programmable thermostat makes it nice for keeping gas use down but still having a warm shop when we want it.
The wood heat is for the house!
L/W
“Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety.” Benjamin Franklin