There was some of that going on around here. Boiler, though, rather than forced air. Not necessarily pressurized. you would want to run glycol, rather than water.
I've never worked on any, somebody made a dual fuel deal with a "swing away" oil burner wood / oil deal for backup.
The area I live in here in N Idaho (It's a state------of the mind) was once a big logging area, as opposed to "further south" which is more rolling plains, wheat, etc.
