When your Atwood 8525-III series furnace stops blowing warm air, a failed blower motor is one of the most common causes. This Dometic 37358MC is a direct-fit replacement motor engineered specifically for the 8525-III furnace family -- no cutting, splicing, or adapting required. It matches the original shaft dimensions, diameter, and 12V DC operating requirements so you can restore heat to your RV quickly and confidently. Also cross-referenced as NBK Parts 20340K.
The Atwood 8525-III is a widely used forced-air propane furnace found in travel trailers, fifth wheels, and motorhomes. Over time, the original blower motor can wear out from continuous cycling, debris ingestion, or simple age. Replacing the motor is a far more economical repair than swapping the entire furnace unit, and with a direct-fit part like the 37358MC, it is a realistic DIY job for most RV owners comfortable with basic electrical work.
The 37358MC runs at 2250 RPM and operates on the 12V DC house battery system standard to virtually all towable and motorized RVs. At 1.4 lbs and 3 inches in diameter, it is compact enough to reinstall into the furnace cabinet without modification to the surrounding sheet metal or wiring harness.
Shaft dimensions and diameter match the original Atwood 8525-III motor exactly. Bolts in without modifications.
Runs on the standard RV house battery circuit -- no inverter or shore power required for operation.
Matches the original blower speed spec to maintain proper airflow and combustion performance in the furnace.
Listed as Dometic 37358MC, MC Enterprises 37358MC, and NBK Parts 20340K for easy verification before ordering.
A full Atwood 8525-III furnace replacement involves disconnecting propane lines, ducting, and the wiring harness -- often a multi-hour job requiring professional installation. A blower motor swap, by contrast, is typically accomplished by removing the furnace access cover, unbolting the motor from the housing, swapping the motor, and reconnecting two or three wires. For RVers who want to stay self-sufficient on the road or in remote campgrounds, keeping a direct-fit replacement motor on hand is a practical approach to avoiding a cold night waiting for a service appointment.
This motor is designed specifically for the Atwood 8525-III series forced-air propane furnace. Before ordering, confirm your furnace model number from the rating plate located on the furnace housing (typically visible from the exterior access panel).
Motor replacement on the 8525-III series is a straightforward mechanical task. General steps include: