The Carrier HC21ZE121 is a draft inducer motor specifically designed for residential gas furnaces. It's a critical component that safely removes combustion gases produced by the furnace and vents them outdoors.The motor spins a fan blade at a high speed of 3000 RPM, creating negative pressure within the furnace flue. This negative pressure acts like a vacuum, drawing exhaust gases thr... https://www.partshnc.com/115v-3000rpm-inducer-motor-8