The Suburban 350206 is a genuine OEM replacement room air blower wheel (also called a squirrel cage fan) for Suburban SF-Q and SF-FQ series "Quiet" RV furnaces. This wheel is responsible for circulating heated air from the furnace into your RV through the duct system or front discharge grille.OEM SuburbanRoom Air Wheel
Suburban RV furnaces use a dual-wheel system – the room air wheel (this part) and a separate combustion air wheel. Both wheels attach to opposite ends of the same motor shaft but serve completely different functions and are isolated from each other.
Room Air Wheel (This Part - 350206): • Pulls cool air from inside your RV • Blows it across the sealed combustion chamber to absorb heat • Forces the heated air back into your RV through ducts/grille • Mounts on the LONG shaft of the motor Combustion Air Wheel (Different Part): • Pulls fresh air from outside the RV • Supplies air to the burner for combustion • Exhausts combustion gases outside • Mounts on the SHORT shaft of the motor These two airflows are completely isolated from each other in a sealed combustion system.
This blower wheel fits the following Suburban "Quiet" (Q) series furnaces:
This blower wheel (350206) is specifically for the SF-Q and SF-FQ "Quiet" series furnaces. If you have a standard SF series furnace (without the "Q"), you need a different blower wheel: • 350129 – For SF, SF-F, and SFV series (non-Q models)
Proper airflow from the room air wheel is critical for furnace operation: • Sail Switch Activation: The airflow activates the sail switch, which must close for the ignition sequence to proceed. A damaged or dirty wheel may not produce enough airflow. • Heat Transfer: Air flowing over the combustion chamber absorbs heat. Reduced airflow means less heat delivered to your RV. • High Limit Protection: If airflow is insufficient, the combustion chamber overheats and the high limit switch shuts off the furnace. Repeated cycling damages components.
When the thermostat calls for heat, the furnace motor starts and spins both blower wheels:
1. Disconnect all power – turn off furnace and disconnect 12V supply 2. Remove furnace access panel – access the blower assembly 3. Loosen set screw – use appropriate Allen wrench or screwdriver 4. Slide wheel off motor shaft – may require gentle wiggling 5. Clean motor shaft – remove any debris or corrosion 6. Install new wheel – slide onto long shaft (room air side) 7. Position correctly – ensure proper alignment with housing 8. Tighten set screw – secure but don't overtighten 9. Spin by hand – verify free rotation without rubbing 10. Test operation – reconnect power and verify proper airflow
*When viewed from the shaft end
SF = Standard Furnace SFV = Standard Furnace Vertical 20/25/30/35/42 = BTU rating (×1000) F = Front Discharge Q = Quiet Operation
Suburban Manufacturing (A division of Airxcel, Inc.) Dayton, TN USA Suburban is the leading supplier of RV furnaces, water heaters, and cooking appliances, known for reliable performance and quality construction.