What size room will the heater warm?
A room about 10 ft long by 10ft wide (100 square feet) with average insulation. Our 400 watt heater model has been specifically designed to heat on average a room size of 100 square feet of floor area even in the coldest parts of northern USA and Canada. In rooms that have one or more of the following conditions: inferior insulation, many windows, staircases leading upwards, adjoining rooms that cannot be closed off (open plan) or outside entrances – this ratio may have to be lowered slightly. For rooms with above average insulation or warmer climates this ratio might be able to be increased. You can add as many heaters as you like to heat any size room, home or office. For rooms with no insulation or for rooms such as sunrooms with entire walls made of glass we recommend a ratio of one 400watt heater per 50 square feet of floor area.