Home » Single-Sided Combustion Blower Fan Blade – 4-3/4" | Harman Part #3-21-00661 (20181)
Single-Sided Combustion Blower Fan Blade – 4-3/4" | Harman Part #3-21-00661 (20181) - Total Hearth
Single-Sided Combustion Blower Fan Blade – 4-3/4" | Harman Part #3-21-00661 (20181) - Total Hearth
Fan Blades

Single-Sided Combustion Blower Fan Blade – 4-3/4" | Harman Part #3-21-00661 (20181)

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SKU: F36
$12.88

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Single-Sided Combustion Blower Fan Blade – 4-3/4" | Harman Part #3-21-00661 | Fits Accentra Insert, P35i, PF120

Restore balance and performance to your pellet stove with the Harman 3-21-00661 Single-Sided Combustion Blower Fan Blade. This 4-3/4" diameter impeller is precisely engineered for select Harman and Heatilator models, ensuring optimal airflow, quiet operation, and maximum stove efficiency.

Key Features:

  • OEM Replacement – Genuine Harman Part #3-21-00661 for guaranteed fit and reliable performance
  • Precision-Balanced – 12-petal single-sided impeller reduces vibration while improving airflow and stability
  • High-Quality Construction – Built to withstand the demanding, high-heat environment of pellet stoves
  • Maintenance Tip – Recommended for replacement during combustion blower motor servicing or upgrades

Product Specifications:

  • Outer Diameter (OD): 4-3/4"
  • Shaft ID: 5/16"
  • Petals: 12 (Single-Sided)
  • Tool Required: 5/32" Allen Key
  • Part Number: 3-21-00661 (20181)

Fits the Following Models:

  • Harman: Accentra Insert, P35i, P35i-C, PF120 Pellet Furnace
  • Heatilator Eco-Choice: BIO-120 Pellet Boiler

When to Replace Your Fan Blade:

  • If the impeller petals (fins) are bent, cracked, or corroded
  • If the fan becomes unbalanced or causes vibration
  • Whenever replacing or servicing the combustion blower motor

Important Note:
Harman manufactures three different impeller sizes. Confirm your model before ordering:

  • 4-3/4" Single-Sided: Part #3-21-00661 (this listing)
  • 5" Single-Sided: Part #3-20-40985
  • 5" Double-Sided: Part #3-20-502221

Installation Tip:
Impellers can seize to the motor shaft over time. If removal is difficult, cutting the shaft may be necessary. Always have a replacement impeller on hand if servicing or replacing the motor.

Keep your pellet stove running efficiently with the Harman 3-21-00661 Single-Sided Fan Blade—a high-performance OEM replacement designed for lasting durability and balanced airflow. Order today to restore optimal combustion performance.