RV Maintenance Made Easy: How to Upkeep Your RV’s LP System

Jul 13, 2022 | Maintenance & Mods

RV Maintenance Made Easy: How to Upkeep Your RV’s LP System

Keep your RV’s LP system in top shape with these easy maintenance and troubleshooting tips.

By Brenda Puckett

It’s not uncommon for your home on wheels to require more attention than your sticks-and-bricks house. When you drive or tow your rig to the next destination, that intense vibration and movement can take a toll on things like appliances, joints, sealants, and your electrical, water, and propane systems, just to name a few.

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So, how do you stay ahead of this regular wear and tear before it becomes a bigger problem? Preventative maintenance is key. Staying on top of daily, monthly, seasonal, and annual RV maintenance schedules gives peace of mind that you’re not only protecting your investment, but personal safety, too. 

Here are a few of my top maintenance and troubleshooting tips for RV LP systems

LP System Maintenance and Troubleshooting Tips

The LP system is responsible for all of the propane-fueled appliances in your RV, like the cooktop, oven, water heater, refrigerator, and furnace. It’s imperative to conduct ongoing observation and maintenance to check for leaks or compromises to the system.  

Preventative Maintenance

  • Have a certified RV inspector or technician perform an annual leak drop test and pressure test on the propane system. This checks for any compromises to the connections or lines and confirms that the system holds proper pressure.
  • Confirm the manufacturing dates on the collar of propane tanks on travel trailers or fifth wheels—they shouldn’t be older than 10 years. If they are, they need to be re-certified or replaced by a certified propane specialist. The tanks on motorized RVs don’t expire.
  • Ensure that the connections at the tanks are secure and tight. Use an LP leak detector spray to verify that connections are leak-free.

Always use an LP leak detector that’s approved for LP gas. Some sprays contain chemicals that can corrode LP fittings.

  • Consider the appliances that utilize propane, like the refrigerator, water heater, and furnace. Keep those compartments clear of debris, insects, and nests, and make sure floor vents and return vents for the furnace are clear and clean. 
  • Regularly test your LP detector for proper operation. LP detectors have a 5-year life span and will need to be replaced.
Propane tank in storage bay of RV


  • RVers commonly experience something called a “propane lockout.” This means that a small amount of propane flows to the cooktop, but none of the larger appliances ignite. To remedy this, turn off any appliances calling for propane, turn off the service valve at the tanks, count to 10, and then open the valves to allow propane to flow into your system and build up the pressure needed to properly operate.
  • Cold weather and low propane volume can reduce the available British thermal units (BTU) output in the LP system. Top off your propane tanks when you know that temperatures are going to drop. 
  • Only a certified propane technician can “break” into the propane lines for repairs. Insist that a propane leak drop test is performed again at this time.

Some LP detectors include a cut-off valve in the system and must be turned on before it will allow any propane to flow to appliances.

If you need to find a certified RV technician, use the Togo RV app’s “Find Service” feature to locate a technician near you.

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Brenda Puckett

Brenda is a certified RV inspector, registered RV technician, National RV Training Academy technical assistant, Women's RV Basics training instructor, small business instructor for the National RV Training Academy, published contributor for Girl Camper magazine, and the creator of "52 Ways to Empower Women RVers" YouTube series.