Gas – a faithful servant, but a demanding companion
Gas is one of a motorhomer’s best friends.
It heats your water, cooks your food, and keeps the van warm when winter starts to bite.
But gas is also something that must be treated with absolute respect.
Even small neglect can lead to leaks, contamination – or, in the worst case, explosions.
That’s why it’s worth taking a moment to check things before you set off.
“Gas is like a good friend – warm and helpful, but if you disrespect it, it can bite.”
1. Types of Gas Used in Motorhomes
Most motorhomes run on propane or butane – and sometimes a mix called LPG (Liquefied Petroleum Gas).
- Propane performs better in cold weather, even down to –40 °C.
- Butane is fine for summer, but stops vaporising below 0 °C.
So if you travel all year, propane is the safer choice.
👉 Always check the labels on your gas bottles.
Different countries use different pressures and connector types.
Only use certified adapters if you refill or exchange bottles abroad.
2. Gas Cylinders – Material, Location and Storage
The cylinders themselves are the heart of the system – and it pays to know them well.
Common types:
- Steel cylinders: heavier but durable, withstand cold and rough handling.
- Aluminium or composite cylinders: lighter, rust-free, popular in newer vans.
Storage rules that matter:
- Cylinders must always stand upright.
- They must be securely fastened.
- The gas locker must have ventilation at the bottom (gas is heavier than air).
- Never store a gas cylinder inside the sleeping area.
- Check the cylinder’s expiry date on the collar – usually 10–15 years.
3. Regulators and Hoses – Small Parts That Matter Most
The gas regulator reduces pressure from the cylinder to what your appliances can handle – usually 30 mbar.
Some older motorhomes still use 50 mbar, so make sure your equipment matches.
Basic maintenance:
- Replace the regulator every 5–10 years, or sooner if it becomes damp or damaged.
- Only use rubber hoses marked with a production date, and replace them about every 5 years.
- In fixed installations, copper pipes are safest and most durable.
- Avoid letting hoses bend sharply or rub against edges.
4. Leak Testing and Gas Detectors – Your Two Best Defences
🧴 Soapy Water – A Simple, Reliable Method
Mix dish soap with water and apply it to all connections.
Open the gas and watch: if bubbles appear, there’s a leak.
Close the valve immediately, ventilate the area and fix the connection.
Never, ever test for leaks with a flame.
You can buy electronic gas-leak detectors, but the old-fashioned soapy-water test often works just as well.
🧭 Gas and CO₂ Detectors
A gas detector should be installed close to the floor, where gas accumulates first.
Smoke and carbon-monoxide detectors should be higher up, as smoke and heat rise.
Test the detectors regularly and replace batteries when needed.
Some models can even be wired directly to your motorhome’s 12 V system.
Good detectors cost little – but can literally save your life.
I personally use this gas sensor and have been very happy with it.
It’s widely available, for example at Nordisk Campingudstyr.
5. Annual Inspection and Maintenance Log
If you’re uncertain about your gas system’s condition, have it checked by a professional once a year.
A proper inspection includes:
- Pressure testing of the system
- Checking hoses, pipes and valves
- Assessing regulators and detectors
👉 In some countries, a professional gas inspection is mandatory.
You can find national regulations on the website of the Forenede Danske Motorejere (FDM).
Pro tip: Keep a small “Gas Logbook” in your glove compartment where you note when you last replaced the regulator, hoses, or detector.
6. Summary – Respect and Routine Checks
Gas isn’t dangerous if handled properly – but it doesn’t forgive carelessness.
With regular checks, a bit of knowledge, and respect for safety, you can enjoy your travels in comfort and peace of mind.
A few minutes of inspection = a lot of safety on the road.
Read Next
🔹 Electricity in Motorhomes – Safe Use Without the Fuss
🔹 Water and Frost Protection – Simple Solutions for All Seasons
🔹 Motorhome Safety Checklist – Free Printable Download
Frequently Asked Questions About Gas Safety in Motorhomes
How often should I replace the gas regulator?
Most manufacturers recommend replacement every 5–10 years.
If a regulator becomes damp, rusty or stiff, replace it immediately.
It’s a small cost compared to the risk of faulty equipment.
How long do rubber hoses last?
Rubber hoses have a limited lifespan – usually about 5 years from the manufacturing date (marked on the hose).
If they become stiff, cracked or worn near the fittings, replace them right away.
For fixed systems, copper pipes are the safer option.
How can I check for gas leaks in my motorhome?
The easiest method is the soapy-water test: mix dish soap and water, apply to the fittings, and open the gas.
If bubbles appear, you have a leak.
Close the valve immediately, ventilate, and repair the connection before lighting anything.
Never test with a flame!
Where should the gas detector be installed?
Near the floor, where gas collects first (it’s heavier than air).
Smoke or carbon-monoxide detectors should be placed higher up.
Test them regularly and replace batteries as needed.
Can I use foreign gas cylinders in my motorhome?
Only with the correct adapter and matching pressure.
Different countries use different systems and connectors – always check the markings and avoid “improvising.”
It can be dangerous.
How do I know if my cylinders or system are safe?
Check the expiry date stamped on the cylinder, make sure it stands upright and is secured.
If in doubt, book a professional gas inspection.
It’s quick, inexpensive, and ensures everything is safe before you travel.
