Mine is in the basement, and it diffuses throughout the house. Next to it is uncomfortably warm on full, the bedrooms on the first floor on the far side of the

Mine is in the basement, and it diffuses throughout the house. Next to it is uncomfortably warm on full, the bedrooms on the first floor on the far side of the house are above freezing but not warm. If you had it in a bedroom on the second floor and your piping was in the basement, it might not be enough. It doesn't take too much to keep a well-insulated house above freezing though. In my experience, even body heat and a few candles is sufficient unless it's below like -10 °C or really windy.