The Jotul wood stove has been keeping our reliance on heating fuel down this winter. Our house is a Split ranch 1950's built, garage under bedroom area, mono flow hydronic baseboard system. I kept a thermometer in the garage to monitor temps at night. They stayed above freezing 35 - 39 most nights. Concerned with a possible freeze up, I recently purchased the Therm Guard. It was easy to install and program with just a slight modification to the back of the mercury filled thermostat.