The living room in your northern climate home is warm as can be as you eat popcorn and watch reruns of "Gunsmoke".
Meanwhile, the pipes in the cellar rec room and upstairs in the mother-in-law bedroom are slowly freezing from lack of heat. Pellet stoves...they heat the space you are in but unless you have a pellet furnace that's providing central heating thru out the Maine home, oh oh.
Or you could install another pellet stove and like the five fireplaces in some old New England victorians, stay busy making sure all those stoves are burning brightly.
The thermostat that is often in the living room is told there's plenty of heat so it does not call for heat in other areas in homes that are not multi zoned in the case of hot water baseboard heating.
With hot air, same problem with the one primary furnace thermostat thinking all is fine and dandy in the room where the furnace controls are. You could move the thermostat to another room to get your oil furnace to kick on when it reaches a certain temperature as one option.
But with 34 below zero temperatures over night in parts of the nation, one oil dealer and another local plumber have told me pellet stoves have been good for their business in service work.
Check for more on wood pellet stoves and their operation, costs, and FAQ. The wood pellets come in different quality and are compressed sawdust in easier to wrestle with 40 pound bags that can be bought by the ton on pallets.