Oye we could go back and forth at this for awhile. 300% efficient at ideal temperatures, not low temperatures, and that efficiency is just at converting the electricity into heat. It doesn't account for the energy it takes to get the fossil fuels out of the ground, processed and brought to a power plant. Or the conversion of the fuel into electricity then losses in the grid getting to your house. Then there is also the fact that fossil fuels are not renewable and the wood you burn can replenish itself and re-capture the carbon you expended making it essentially net zero if you sustainably forest and don't use tons of power tools to harvest the wood. Anyway, I guess what I'm saying is its complicated but for a lot of folks I'm still convinced wood is better for most, for now. Soon as renewables take over I agree, heat pumps FTW but the USA is horrifically behind on renewables.