As Greenfab explains, “Each bedroom is equipped with a wall-mounted, thermostat controlled, convection heater that intakes the ambient air in the room, warms it up and re-diffuses it throughout the room in a silent and consistent way. By using the existing heat in the room to maintain a comfortable temperature, energy and money is saved through this heating method.”  An Eco-Friendly Prefab Assembled In One Day by Caroline Wallis