Maybe a full cord.
I cant say enough about a well insulated home. My home is 1 1/2 yrs old now(1300 sqft main level + walkout basement) so its my second winter burning. And I'm totally amazed at my low wood consumption. I attribute this to a well insulated home. I'm burning a wood furnace, which in my opinion isnt all that efficient, it likes its wood. The wife started complaining it's too hot in the house during the night, I usually fire up good at night. So now I let the wood furnace go out by 11pm. The house is usually around 80. Buy morning its still in the low 70's. So I wont light another fire until the next afternoon around 4pm. The home holds the heat that long. The first night I tried this the temp was around 12 degrees and dropped to around 5 degrees by morning. I will admit the unfinished basement does cool down to around 64, but thats expected with a cement floor. If I were only heating the main level with a wood stove I know I could do even better. But I'm not complaining.