Hello,Claridon! I fresh out of Kokers,but you've got a large Home. Once you get behind and that bitter cold was invading towards the core of the structure,you've got to get you're unit to pedal like Hell to catch up. Pretty sure we broke the Low Temp Record for Tuesday. It stood for 130 years. I'd say you did well to get caught up with 3400 Square feet. When it's that cold,all bets are off. Next time try moving your feed rate up ahead of the cold to keep pushing the heat outward. Glad you dropped in!