Dometic | OEM Furnace Motor | 31384 | Fits Dometic / Atwood Hydroflame 7900-II Series Furnaces
Restore proper blower operation and dependable heating performance in your RV with the genuine OEM Dometic HydroFlame Furnace Motor (Part #31384). Designed as a direct replacement for the earlier Atwood/Dometic motor assembly, this updated part supersedes the discontinued 31036 and is engineered for compatibility with select HydroFlame 7900-II Series RV furnaces.
The furnace motor is a critical component of the heating system, driving both the interior blower wheel and the combustion air wheel. As the motor operates, it creates the airflow necessary to circulate heated air throughout the RV and supply combustion air to support proper furnace operation.
If your existing furnace motor is worn, noisy, intermittently operating, or no longer producing adequate airflow, replacing it with the correct OEM motor can help restore proper furnace performance. Using the genuine Dometic replacement helps maintain the intended motor configuration and compatibility with the original furnace assembly.
Key Features & Benefits
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Genuine OEM Dometic Replacement: Original equipment replacement motor manufactured for compatible Atwood/HydroFlame RV furnace applications.
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Updated Replacement Part Number: Dometic 31384 supersedes the previous Atwood/Dometic part number 31036.
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Dual-Blower Operation: Drives both the interior circulation blower wheel and the combustion air wheel.
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Restores Proper Airflow: Replaces worn or failed furnace motors that may contribute to inadequate airflow, excessive operating noise, or furnace performance problems.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Dometic |
| Manufacturer | Dometic / Atwood |
| Part Number | 31384 |
| Previous Part Number | 31036 |
| Part Type | Furnace Blower Motor |
| Condition | New, Genuine OEM |
| Electrical Requirement | 12V DC |
| Motor Body Diameter | 3 inches |
| Motor Body Length | 3 inches |
| Shaft Configuration | Dual-ended |
| Shaft Diameter | 5/16 inch |
| Shaft Length | 1 inch per side |
| Application | HydroFlame 7900-II Series RV Furnaces |
Compatible Furnace Models
Designed for use with select Dometic / Atwood HydroFlame furnace models, including:
- 7912-II
- 7916-II
- 7920-II
- 7900-II 16,000 BTU models
- 7900-II 20,000 BTU models
Additional legacy applications may include select FA79D, FA79P, and FA76D furnace motor configurations. Always verify the original furnace model and motor part number before ordering.
OEM Replacement & Supersession Information
Dometic / Atwood part number31384 replaces the previous motor part number 31036.
If your original motor is identified as Atwood 31036 or PF20040Q, 31384 is the updated OEM replacement reference for the applicable furnace configurations.
Important Fitment Information
Before ordering, verify your furnace model number from the manufacturer's identification plate and compare the existing motor's part number and configuration.
Although 31384 is the designated replacement for 31036 in the applicable furnace assemblies, not every Atwood or HydroFlame furnace uses the same motor.
Professional installation by a qualified RV technician is recommended. Disconnect the 12V electrical supply before servicing the furnace and follow the manufacturer's service procedures.
Package Includes:
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(1) Dometic OEM HydroFlame Furnace Motor, Part #31384
Blower wheels, mounting hardware, and other furnace components are not included unless specifically stated.
Need help confirming fitment?
Our team at United RV Parts is here to help you find the right replacement or repair parts for your RV Furnace.
Text or call 817-984-1852 with the make and model number of your existing RV Furnace and we’ll make sure you get exactly what you need the 1st time.

