When your QuadraFire pellet stove stops circulating warm air through the room, the convection blower motor is often the culprit. The 812-4900 is the factory-style replacement motor that restores proper room-air circulation -- keeping heat moving where it belongs. This is a direct-replacement unit rated at 115V, 1.16A, and 2300 RPM, and it ships with 1/4" male spade wiring connectors for a straightforward swap on compatible QuadraFire pellet stove models. Also catalogued as NBK Parts 20143.
The convection blower motor (also called the room air blower) is responsible for drawing cool room air across the heat exchanger and pushing warm air out into your living space. Unlike the combustion blower, which manages airflow for the burn pot, the convection blower is what you actually feel when the stove is heating your room. A failing or seized convection motor results in a stove that burns but puts very little heat into the space.
The QuadraFire 812-4900 is engineered to the same electrical and mechanical specifications as the original motor, so installation is a direct swap with no wiring adapters or brackets required on compatible models. Class B insulation rating means the motor windings are built to handle the elevated ambient temperatures found inside a pellet stove cabinet during normal operation.
Factory-spec 115V motor with 1/4" male spade terminals -- plugs in using the existing wiring harness on compatible QuadraFire pellet stoves.
Rated for continuous operation in the elevated cabinet temperatures typical of pellet stove enclosures, providing reliable long-term service.
Matches OEM airflow performance so heat distribution in your room returns to the level you expect from a properly functioning stove.
Cross-listed under NBK Parts number 20143 -- the same part, same specs, confirmed QuadraFire fitment.
QuadraFire pellet stoves use two separate blower motors. The combustion blower (exhaust blower) moves flue gases through the burn system and out the exhaust vent. The convection blower (room air blower, part 812-4900) pulls cool room air in through the lower intake grille, passes it over the heat exchanger, and discharges warm air from the upper vents into your living area.
If your stove is igniting and burning normally but producing little warmth in the room, and you can hear or feel that the upper vents have weak or no airflow, the convection blower motor is the part to inspect and replace. If the stove is faulting on exhaust or combustion errors, check the combustion blower instead.
Replacing the 812-4900 convection blower motor is a serviceable DIY job for owners comfortable with basic appliance repair. General steps apply to most compatible QuadraFire models: