RV Furnace Parts
When an RV furnace runs the blower but never lights, the culprit is almost never the whole unit. It's usually a sail switch that isn't sensing airflow, a combustion wheel packed with dust, or a cracked burner gasket. This category covers those wear items plus the floor and wall registers the ducting feeds, in OEM Suburban parts and universal pieces from RV Designer, JR Products, and MC Enterprises.
89 products
Suburban Furnace Igniter Electrode & Wire Assembly | SF Series, Replaces 232286
$40.99
Camco Universal Gas Control Wrench | Adjustable, Zinc-Plated Steel
$36.99
LaSalle Bristol Therma Heat Step/Tank Pad with Thermostat | 13.5V, Fits Tanks Up to 40 Gal
$36.99
B&B Molders Endura Exhaust Vent | 1.5" Flange, Black
$34.99
B&B Molders Endura Exhaust Vent | 1.5" Flange, Polar White
$34.99
Suburban 260231 Furnace Vent Cap | Silver, Twist-On Mount
$34.99
B&B Molders Endura Exhaust Vent | 5/8 in. Flange, Black
$33.99
Suburban Wall Thermostat | Heat Only, Mechanical Knob, White
$33.99
MC Enterprises 36165MC Sail Switch | Normally-Closed Furnace Air-Flow Switch
$32.99
Suburban RV Furnace Limit Switch | 235°F, NT Series
$31.99
MC Enterprises Furnace Igniter Electrode | Fits Dometic/Atwood
$30.99
MC Enterprises Igniter Electrode for Dometic Hydro Flame Furnaces
$28.99
MC Enterprises Igniter Electrode for Suburban Furnaces
$27.99
MC Enterprises Limit Switch for Dometic RV Furnaces
From $26.99
2 options
Vent Register | White Metal, 4" x 10" Undampered
$23.99
Camco Olympian Wave Heater Leg Stands | Fits Wave 3/6/8, Black (2-Pack)
$22.99
RV Designer Floor Register with Damper | Tan, 12" x 3-1/2" OD
$22.99
Camco Flying Insect Screen | Coleman/Suburban/Sol-Aire/Hydroflame Furnace (FUR 100)
$20.99
Camco Flying Insect Screen | Duo-Therm & Suburban Furnace (FUR 200), 2-Pack
$20.99
Camco Flying Insect Screen FUR500 | For Atwood Hydroflame Furnaces
$20.99
Camco Flying Insect Screen | Hydroflame 8500-Series Furnace (FUR 300)
$20.99
Camco Flying Insect Screen WH-200 | Fits Suburban & Atwood Vents
$20.99
RV Designer Floor Register with Damper | 12" x 3-1/2" OD, White
$20.99
JCJ Mud Dauber Furnace Screen | Fits Atwood 2004 Furnaces
$19.99
JCJ Mud Dauber Screen | RV Furnace Outside Fitting, Fits M500 Series
$19.99
DEI Heater Hotter Radiator Additive, 16 oz
$18.99
Camco Universal Thermocouple Kit | 12"
$17.99
MC Enterprises Furnace Limit Switch for Suburban Furnaces
$16.99
Valterra RV Furnace Bug Screen | Fits Atwood Hydroflame 8500 Series, 4.88" x 4.5" x 1.3"
$16.99
MC Enterprises Furnace Limit Switch | Fits Atwood 8900-II & 8900-III
$15.99
Suburban Furnace Combustion Air Wheel | OEM Replacement Blower Wheel
$15.99
Valterra RV Furnace Vent Bug Screen | 6.15in x 1.3in, Fits Suburban DD Series
$15.99
Mr. Heater Fuel Filter | Universal, For Buddy Series Heaters
$14.99
Suburban 4" Furnace Duct Collar, Grey
$14.99
Camco Universal Thermocouple Kit | 30" Length
$13.99
Suburban RV Burner Access Gasket Service Kit | Model 525031
$13.99
Suburban RV Furnace Burner Access Door Gasket | Fits SF/SH Series, 2-Pack, Part 070811
$13.99
Ultra-Fab Bug Stopper Furnace Vent Screen, Coleman/Suburban/Hydroflame
$13.43
Ultra-Fab Bug Stopper Furnace Vent Screen, Suburban/DuoTherm
$13.43
B&B Molders 2x10 Floor Register | No Damper, Polar White HVAC Vent
$11.99
Fixing an RV furnace with the right part
Furnace troubleshooting follows the same sequence the furnace runs at startup: 12-volt power comes on, the blower spins up, the sail switch senses airflow and closes, then the board lets the gas valve and igniter fire. Find where that chain breaks and the failed part is usually obvious.
- Sail switches. The most common no-heat culprit. The blower has to move enough air to push the sail switch closed before the burner will light, a safety interlock so the furnace never fires without airflow. A stuck or misadjusted switch like the MC Enterprises 36165MC normally-closed unit stops ignition cold.
- Combustion air wheels. The Suburban combustion air wheel feeds air to the burner. Caked with dust or with bent blades, it gives you poor combustion or none at all. Match the OEM wheel to your Suburban model rather than guessing.
- Burner gaskets and service kits. The Suburban burner access gasket kit (525031) reseals the burner box after you clean or inspect it. Skip the fresh gasket and you invite a combustion leak.
- Vent caps. The exterior cap, like the Suburban 260231 twist-on, keeps weather and pests out of the exhaust. A missing or crushed cap is worth replacing before it lets water into the furnace.
- Registers. The floor and wall outlets your ducting terminates at: RV Designer's Rotaire and Provent dampered registers and JR Products steel floor registers. Dampered versions let you close off heat to a room, and the same 4-inch registers also serve A/C ducting.
Match OEM parts like the combustion wheel and gaskets to your exact Suburban or Dometic model number. If the furnace itself is past saving, the full units are in RV Furnaces, and a plug-in backup lives in Portable & Space Heaters.