We're just climbing out of negative / single digit temperatures and actually near the teens for the first time in days. I have been feeding the stove every few hours to keep her at 650+ in order to keep my toes warm. I've been using smaller splits in order to keep the temps ramped up. The stove has performed admirably and actually seems to enjoy the cold weather - she just keeps purring along. Maybe I'll have to give 'er a breather for a while once we get into the twenties, but then again that's what she's here for. Guess I'll wait until April.