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[schoppy]

If you look at the combustion air path of the G series it actually does some preheating of the combustion air. The air is drawn through the bottom of the rear of the stove which is quite warm then through a baffle which passes the air next to the heated boiler inside of the jacket insulation before taking it to the inlet damper. Not sure how much it is heated but it sure has to help.

[hondaracer2oo4]

Btu needs of a home change as temperatures drop or rise and wind changes. The btu needs of a house double if you need to raise the temp 50 degrees instead of 25 degrees. Whether or not some boilers operate a little more efficiently depending on outside temps doesn’t change the fact that the actual btus needed does double.

[boilerman]

Point Blank nailed this one. Extra frigid cold temps or high winds will raise the amount of btu your house or other buildings being heated need. Does not matter it you are burning wood, propane, heating oil or electricity, your furnace will will run more often and burn more energy. Don't waste your time looking for something wrong with your OWF. It's just cold and your house is hungrier.

[RSI]

I agree. If it didn't burn more wood when the weather is colder then I would be looking for problems with why it is burning so much when it is warmer.

[heat550]

Both my boilers burned  better the colder it got .
But when you reach point when outside temp is 100 degrees
Colder then inside temp . Your boiler will burn wood like it's never
Burned before. Being that cold it will work it's way into any building.
In 12 hours the night it got to -21f I burned 400 lbs oak slabs .

Heat550

[mlappin]

I agree. If it didn't burn more wood when the weather is colder then I would be looking for problems with why it is burning so much when it is warmer.