Next week I'll have a large Lopi Freedom insert installed professionally into my fireplace. Although I will continue to use my furnace as a power backup, I hope to use my insert for at least 50-75% of my heat during the winter for my 2-story, 2400 sq ft home. How much wood will I need per winter? I've had two pick-up truckloads delivered and stacked, which I estimate as a cord, but I'm not sure. I wouldn't mind getting two years worth, just to season for next winter too ...... How much wood do y'all go through in a winter?