Overview

The 33286 wheel is the main room-air (circulation) blower wheel for many Atwood / HydroFlame 7900-series furnaces. Replacing a worn, cracked, or out-of-balance wheel restores airflow, reduces vibration, and helps prevent nuisance limit-switch trips caused by poor circulation.

Key Features

• Correct Fit & Balance: Built to the 7900 housing depth and hub position for smooth, quiet operation.
• OEM-Style Hub: Secure clamp/set-screw interface mates to the 7900 motor shaft.
• Durable Construction: Resistant to blade erosion that reduces CFM over time.
• Direct Replacement: No guessing on offset or blade pitch versus universal wheels.

Compatibility

• Furnace Family: HydroFlame 7900 series (e.g., 7912 / 7912-II / 7916 / 7916-II / 7920 / 7920-II). Always verify against your model’s parts list.
• Used With Motor(s): Atwood 31036 (common 7900 replacement motor) and equivalents.
• Not This Part: If you need the small combustion wheel, use 33124 instead.

What’s Included

• (1) Room-air blower wheel 33286
• Clamp / set-screw (included with many wheels; reuse your original if not supplied)

Installation Notes

1. Disconnect 12V and LP. Remove blower housing per the service manual.
2. Loosen the old wheel’s set-screw, note depth/offset, and slide off carefully.
3. Install the new wheel on the shaft. Center it in the housing to avoid rubbing; match original depth.
4. Torque the set-screw snugly on the shaft flat; verify free spin before power-up.
5. Test run; check for rubbing, vibration, and proper airflow at registers.

Technical Specifications

Cross / Related Parts

• Motor: Atwood 31036 (7900 series)
• Combustion Wheel: 33124 (firebox side)
• Motor Bracket: 35879

FAQs