The Nortron by Broan ECM Series delivers our best operating efficiency for lower energy costs. The superior performance of electronically commutated motors (ECM) is in part due to the motor’s brushless DC design, which ensures greater efficiency over a wide speed range. This attractive, compact furnace can be installed almost anywhere. The ECM Series furnaces from Broan have been approved for the Save On Energy Furnace Rebate. Available for Ontario residents only.