Overview

The Atwood 31036 restores proper combustion and room air flow in HydroFlame 7900 series furnaces. It’s sized for the factory brackets and blower wheel spacing, minimizing vibration and ensuring reliable ignition and steady heat output.

Fits These Models

• 7912
• 7912-II
• 7916
• 7916-II
• 7920
• 7920-II

Key Features

• Direct Replacement: Drop-in for 7900 housings, shafts, and brackets.
• Clockwise Rotation & Leads: 12V wiring for HydroFlame control circuit.
• Balanced Assembly: Helps reduce vibration and blower noise.
• Service Friendly: Reuses existing blower wheels if in spec; see install notes.

Installation (Summary)

1. Disconnect 12V power and LP gas; allow furnace to cool.
2. Remove access panel and blower housing; photograph wiring.
3. Transfer blower wheel(s) to the new motor; match hub/set-screw flats.
4. Mount motor to factory brackets; center wheel(s) in the housing.
5. Reconnect wiring with proper polarity; test ignition and airflow.

Technical Specifications

Common Companion Parts

• Room-air blower wheel (7900): 33286
• Combustion wheel: 33124
• Motor bracket (7900): 35879
• Limit or sail switch (as applicable): verify by furnace sub-model

FAQs