Nearly had frost this AM. This used to be the time to play chicken with the coming winter and see how long I could go before having to fire up the wood stove. I could go quite a while, the house is well built and holds heat well. Times have changed over the decades. I am no longer the man who enjoyed seeing how big and heavy of a log I could carry out of the bush to buck up, No longer do I enjoy the cutting and stacking, it is just needed labour now, not enjoyed. I really don't use much wood, 4 cord or is it Chord? of poplar wood would heat my house fine. I have 2 wood stoves, one up stairs and one down in the walk out basement. I used to mostly live upstairs but for roughly the last 7 years I live mostly downstairs in winter, and keeping the downstairs fire going by default keeps the upstairs a ok temperature (at greater than -20 I do need to light the upstairs stove as well). Then I found that by closing off the rooms I don't use in the basement, I cut maybe 3/4 of a cord off my wood use in a winter. About 4 years ago I hooked up a Diesel air heater to blow hot air into the downstairs sitting area. Right onto the sofa I sit on. It uses so little fuel. I then ran floor to ceiling curtains enclosing the sitting area, the wood stove, the output from the diesel heater. A area exactly 18 feet by 9  or 162 square feet. Of a house that must be 2300 sqft I live in my house within a house (of curtains ) of 162 feet. That's the only area I now keep heated proper in the winter. This curtained off area is heated just with the diesel air heater, wood stove , electric blanket, two of them. One on the sofa I sit/ sleep on the other under a throw rug in front of the sofa. The wood stove only fired up if temps go below -15. This now cuts my wood use down to 2, maybe  2.5 cord.