Keep your Napoleon pellet stove feeding fuel evenly and reliably. The NPAM auger motor (part 20149, also sold as NBK Parts 20149) is the factory-specified replacement for NPI and NPS series pellet stoves. It ships fully assembled and ready to drop in -- no fabrication, no modifications required.
The auger motor is one of the most wear-prone components in any pellet stove. It runs continuously during every burn cycle, slowly turning the auger screw that moves pellets from the hopper into the burn pot. When the motor weakens or fails, your stove produces inconsistent heat, feeds unevenly, or shuts down entirely. Swapping it out with the correct OEM-spec replacement restores smooth, predictable performance.
The Napoleon NPAM turns at a true 1 RPM in a clockwise direction -- matching the factory auger drive specifications for the NP stove family. At 120V AC, it wires directly into the existing control harness without any voltage conversion or relay work.
Arrives ready to install. No assembly, no modifications -- remove the old motor, mount the NPAM, reconnect the wiring, and you are back in operation.
Factory-matched 1 RPM clockwise rotation delivers consistent pellet feed rate to the burn pot, preventing under-fire or over-fire conditions.
Designed specifically for Napoleon NP series stoves. No adapters, no jury-rigged mounting brackets -- this is the part the stove was built around.
Runs on standard household current. Connects directly to the stove's existing wiring harness with no voltage conversion needed.
The NPAM (part 20149) is confirmed compatible with the following Napoleon NP series pellet stoves:
If your stove is not on this list, verify your stove's model number on the rating plate (typically located on the back panel or behind the lower access door) before ordering. The NPI series are pellet stove inserts; the NPS series are freestanding units. Both share this auger motor spec.
This motor is sold and referenced under the NBK Parts number 20149. If you are searching by the NBK catalog number, this is the same part.
Auger motors typically show signs of failure before they quit completely. Watch for these indicators:
When replacing the auger motor, take the opportunity to clear any pellet dust and debris from the auger tube. Compacted fines around the auger shaft accelerate wear on the new motor. A quick vacuum and wipe-down before reinstalling adds life to the replacement part.
The NPAM mounts to the auger assembly using the same bolt pattern as the factory motor. Disconnect power to the stove completely before beginning any motor swap. The auger motor is located at the rear or side of the hopper assembly depending on your NP model -- consult your stove's service diagram for the exact location on your unit.