We are warm don't get me wrong(electric heat and wood stove) but like last night the temp dropped down to about 1° and even in a room with a space heater and all wrapped up in blankets the hovabators still had .5°-.9° temp drops..From about 99.5° down to 98.7° or so..I swear this time of year its a constant fight with stability because of inconsistent temps in the house..