When your pellet stove stops drafting properly or the combustion exhaust motor fails, this is the direct OEM-spec replacement. The QuadraFire 812-3381 restores correct exhaust airflow, combustion efficiency, and safe venting to your Classic Bay 1200 or 1200i stove -- one of the most common service items on this stove family.
The combustion exhaust blower is responsible for drawing combustion gases out of the firebox and through the flue. When this motor wears out or fails, the stove may shut down on fault codes, produce incomplete combustion, or vent improperly -- all of which are safety concerns. Replacing it with the correct OEM-spec motor gets your stove back to factory performance.
This blower carries QuadraFire part number 812-3381 and is also cross-referenced as NBK Parts 20140. It is a Class B insulation motor rated for continuous-duty operation at 115V/60 Hz -- matching the stock electrical specs of the Classic Bay 1200 platform exactly.
Engineered to the original 812-3381 specification. No adapters, no modifications -- mounts and wires the same as the factory unit.
Class B rated windings handle sustained operating temperatures typical of pellet stove combustion duty cycles without premature failure.
Rated at 3,150 RPM to maintain the exhaust draw the Classic Bay 1200 combustion system was tuned for at the factory.
Sold as QuadraFire 812-3381 and NBK Parts 20140. Either number confirms the same unit for service documentation purposes.
The combustion exhaust blower runs whenever the stove is operating and is one of the higher-wear components in any pellet stove. Common causes of failure include bearing wear from continuous duty cycles, ash and particulate contamination entering the motor housing, and age-related winding degradation. If your stove is displaying exhaust or combustion fault codes, or you hear grinding, squealing, or reduced airflow, this motor is the first component to inspect.
This blower motor is confirmed for the following QuadraFire models:
If you own a different QuadraFire pellet stove model (such as the Santa Fe, Mt. Vernon, or Castile), verify your service manual or stove data plate part number before ordering. The 812-3381 is specific to the Classic Bay 1200 combustion blower position.
Replacing the combustion exhaust blower on the Classic Bay 1200 series is a serviceable DIY task for owners comfortable with basic appliance repair. The motor mounts to the exhaust blower housing with machine screws and connects via a standard wiring harness connector. Always disconnect power at the wall outlet or dedicated circuit before beginning work, and allow the stove to cool completely.