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Why does my RV heater stink?

Author

John Castro

Published Mar 18, 2026

Why does my RV heater stink?

You may notice a strong odor from your furnace when you turn it on – especially the first time you turn it on for the season (often this happens at home, too!). The smell should go away after the heater has been running for a while – it’s a combination of dust and other particles setting in the vents.

Why do I smell propane in my RV?

RV Propane Leak Sign #2: Propane Smell The second telltale sign of a leak is an “eggy”, rotten cabbage” or gas-like propane smell in your RV. The interesting thing is that propane is a naturally odorless gas – so smell is added to propane for safety purposes.

Why does my diesel air heater smell like smoke?

If the heater is running but will not speed up, just running slowly all the time regardless of the power setting, go to Section E. If the heater is running but is making a smoke or diesel smell, go to section F. If the control is completely dead, there are 2 possible issues: There is no power to the heater.

What causes black smoke coming from the furnace vent?

With black smoke coming out the heat vent the mixture is running very rich, often caused by some thing in the fuel mixture area or in the tube itself. All the adjustments need to be set correctly for the unit to operate properly. Look in your paperwork for the owners manual for your furnace.

What causes a furnace to turn off in an RV?

Check for the furnace box, see if there is anything that is blocking the furnace vents. Any obstruction in the vents will result in malfunctioning and heating of the furnace. This will lead the temperature limiting switch to turn off the furnace. Vents can blocked due to various things, debris dust can also block it.

What should I do if my RV furnace is corroded?

Prepare a slurry blend of water and baking soda. Disconnect carefully the wires and the connections from the terminal which is corroded. Make use of a toothbrush for applying the baking soda mixture and scrub the corroded material carefully.

If the heater is running but will not speed up, just running slowly all the time regardless of the power setting, go to Section E. If the heater is running but is making a smoke or diesel smell, go to section F. If the control is completely dead, there are 2 possible issues: There is no power to the heater.

With black smoke coming out the heat vent the mixture is running very rich, often caused by some thing in the fuel mixture area or in the tube itself. All the adjustments need to be set correctly for the unit to operate properly. Look in your paperwork for the owners manual for your furnace.

Check for the furnace box, see if there is anything that is blocking the furnace vents. Any obstruction in the vents will result in malfunctioning and heating of the furnace. This will lead the temperature limiting switch to turn off the furnace. Vents can blocked due to various things, debris dust can also block it.

Why is my propane furnace not firing properly?

On the majority of the RV propane furnaces, the igniter requires a minimum of 10.5 V for firing properly. In case a couple of the onboard batteries has become compromised or have run quite low, there might not be enough spark for operating the thermostat or igniting the system.