Suburban 12V Furnace Blower Motor | 521230 | SF 20K/25K/30K BTU

Restore reliable furnace airflow with the Suburban 521230 OEM 12V RV Furnace Blower Motor. Genuine Suburban OEM dual-shaft 12V DC blower motor for SF and SFV series furnaces of 20,000 / 25,000 / 30,000 BTU. Dual-shaft design drives both the blower wheel and combustion air wheel from a single motor.

What This Motor Does

The furnace blower motor is the heart of your furnace's airflow system. It's attached to both the blower wheel and the combustion air wheel — when the furnace control board sends power to the motor, the dual shafts rotate both wheels simultaneously to:

• Circulate heated air throughout the RV via the blower wheel
• Draw combustion air into the burner via the combustion air wheel

Motor failure results in complete furnace shutdown — without airflow, the safety systems prevent burner ignition.

⚠️ Motor Size Must Match Furnace BTU Rating

Critical fitment note: the motor's size and RPM must match the furnace's BTU/hr rating. Installing the wrong-size motor may result in insufficient airflow, overheating, or safety shutdowns.

Compatible Suburban Furnace Models

This 521230 motor is compatible with these Suburban furnace models:

SF-20 Series (20,000 BTU):

• SF-20F, SF-20FQ, SF-20Q, SF-20VHFQ, SF-20VHQ

SF-25 Series (25,000 BTU):

• SF-25F, SF-25FQ, SF-25Q, SF-25VHFQ, SF-25VHQ

SF-30 Series (30,000 BTU):

• SF-30F, SF-30FQ, SF-30Q, SF-30VHFQ, SF-30VHQ

SFV-20 / SFV-25 / SFV-30 Series:

• SFV-20FQ, SFV-20Q
• SFV-25FQ, SFV-25Q
• SFV-30FQ, SFV-30Q

Higher-BTU Furnace? See the 521255

For Suburban SF-35VHQ / SF-35VHFQ furnaces (35,000 BTU+), the 521230 is NOT the correct motor. Use the current OEM replacement instead:

• Suburban Furnace Motor Kit (521255) — for SF-35VHQ / SF-35VHFQ
• Suburban 521232 Blower Motor (discontinued) — replaced by 521255

Physical Specifications

• Motor Body: 3" diameter × 3-7/8" long
• Shaft #1: 2-15/16" long × 5/16" diameter
• Shaft #2: 2" long × 5/16" diameter

Electrical Specifications

• Power Source: 12V DC

Related Suburban/Furrion Furnace Components

Companion products for Suburban SF/SFV furnace servicing:

• Furrion FFG20RA 20K BTU RV LP Furnace (Suburban SF-20VHQ/SF-20Q equivalent)
• Furrion FFG30RA 30K BTU RV LP Furnace (Suburban SF-30VHQ/SF-30Q equivalent)
• Suburban Furnace Bottom Duct Kit (520576)
• Suburban Furnace Bottom Duct Gasket (070853)
• Suburban AirXCel 161154 Wall Thermostat

Cross-Reference Part Numbers

• Part Number: 521230

⚠️ Professional Installation Required

Motor replacement involves furnace disassembly, careful alignment of dual shafts with the blower and combustion air wheels, 12V DC electrical wiring, and post-install verification. Installation should be performed by a qualified RV service technician unless you have prior experience with Suburban furnace service.

90-Day Limited Manufacturer Warranty

Genuine Suburban OEM

Key Features

• Genuine Suburban OEM 12V furnace blower motor
• Part number: 521230
• 12V DC power
• Dual-shaft design — drives blower wheel AND combustion air wheel
• Motor body: 3" diameter × 3-7/8" long
• Shaft #1: 2-15/16" long × 5/16" diameter
• Shaft #2: 2" long × 5/16" diameter
• Compatible with: Suburban SF-20/25/30 and SFV-20/25/30 series (20K, 25K, 30K BTU)
• Backed by 90-day limited manufacturer warranty

Specifications

• Brand: Suburban
• Part Number: 521230
• Type: RV Furnace Blower Motor
• Power Source: 12V DC
• Design: Dual-shaft (blower wheel + combustion air wheel)
• Motor Body Dimensions: 3" diameter × 3-7/8" long
• Shaft #1: 2-15/16" long × 5/16" diameter
• Shaft #2: 2" long × 5/16" diameter
• Compatibility (SF-20): SF-20F, SF-20FQ, SF-20Q, SF-20VHFQ, SF-20VHQ
• Compatibility (SF-25): SF-25F, SF-25FQ, SF-25Q, SF-25VHFQ, SF-25VHQ
• Compatibility (SF-30): SF-30F, SF-30FQ, SF-30Q, SF-30VHFQ, SF-30VHQ
• Compatibility (SFV-20): SFV-20FQ, SFV-20Q
• Compatibility (SFV-25): SFV-25FQ, SFV-25Q
• Compatibility (SFV-30): SFV-30FQ, SFV-30Q
• Warranty: 90-day limited manufacturer warranty