Warm your room up to 38% faster with the largest and highest performing Ecofan model, the Ecofan Airmax. Ideal for all room sizes, the Airmax circulates more warm air further into your home! Tested and proven to save you up to 18% in fuel with more efficient distribution of heat from your wood stove. No electricity needed, Ecofans generate power by converting the heat from your wood stove into electricity.