We bought this as a refurb in hopes of fixing our 17-year-old furnace but unfortunately, the blower motor wasn’t the problem and we ended up getting an entirely new furnace. This blower motor was used all of 3 weeks, just past the return window. It was refurbed by United HVAC Motors, and is plug-and-play, 100 percent programmed. Voltages ranging from 110V-120V, 208V, to 220V-240V. United Custom Model: HD44RE124; Model: 5SME39HXL3057-3-B. United has excellent customer service, and might (or might not–I’m not sure) help you with install questions as needed.