31113 Atwood Blower Wheel OEM Hydro Flame Heater/Furnace Blower Wheel

Atwood / Dometic 31113 Hydro Flame Furnace Blower Wheel The 31113 blower wheel is the OEM room‑air wheel used in Atwood/Dometic Hydro Flame furnaces. It circulates heated air across the heat exchanger and into the RV cabin. Precision‑balanced for smooth, quiet operation and designed to fit AFSD, AFSAD, DFSD, DFSAD, and DFSDH series furnaces. Ideal replacement for wheels that are cracked, noisy, vibrating, or producing weak airflow. Includes D‑shaped 5/16" bore and correct 5‑1/4" × 4‑1/4" dimensions.

Replaces: A32166 is no longer available. Use replacement A31113

The Atwood 31113 Blower Wheel is the factory indoor squirrel‑cage wheel mounted to the furnace’s blower motor. It pulls cabin air across the heat exchanger and distributes heated air through the ducting.

• OEM Part: 31113

• Alternate Part No.: 32166

• Application: Hydro Flame RV furnaces (room‑air blower)

• Material: Plastic

• Dimensions:

  • Diameter: 5‑1/4"

  • Length: 4‑1/4"

  • Shaft Hole: D‑shaped, 5/16"

🔥 Compatible Furnace Models

Confirmed compatibility across multiple Atwood/Dometic furnace families:

• AFSD Series: AFSD12111, 12121, 12131, 12141, 16111, 16121, 16131, 16141, 20111, 20121, 20131, 20141

• AFSAD Series: AFSAD12111, 12121, 12131, 12141

• DFSD Series: DFSD12111, 12121, 12131, 12141, 16111, 16121, 16131, 16141, 20111, 20121, 20131, 20141

• DFSAD Series: DFSAD12111, 12121, 12131, 12141

• DFSDH Series: DFSDH20111, DFSDH20121

This wheel is not the combustion blower wheel—it's the room‑air wheel.

🛠️ Symptoms This Wheel Fixes

• Loud rattling or scraping noises

• Weak airflow from vents

• Furnace short‑cycling or overheating

• Excessive vibration

• Warped or cracked wheel causing imbalance