Caravan gas bottle checklist: what to check before every UK trip

The short answer

Before you tow, check how much gas is left, whether you need a spare for the trip, and that bottles are upright and secured in the designated ventilated locker. Close bottle valves before travel unless the vehicle manufacturer explicitly permits gas use on the move with the installed safety equipment and local rules allow it.

1. Check how much is left — properly

Shaking or lifting the bottle tells you very little. Before moving a portable bottle, turn off the appliance, close the bottle valve and disconnect according to the supplier’s instructions. Keep it upright, use scales rated for its full weight and subtract the tare in matching units, allowing for accessories not included in the tare. Do not lift a connected bottle or attempt to weigh a heavy installed cylinder yourself. UK tare markings may be in pounds and ounces; convert them to kilograms if needed. A typical touring bottle holds 6 kg of propane; larger vans often carry two.

If the bottle sits in a cramped front locker, weighing every time is a chore. That is where a level sensor under the bottle helps: you can read the level on your phone if Bluetooth reception reaches your position; test it rather than assuming it will work through the locker.

2. Decide on a spare

For a weekend in summer, one bottle is often enough. For longer trips, cold-weather touring or a heater running every evening, carry a second bottle or know where the nearest refill or exchange point is on your route. Running the heating overnight in spring or autumn uses far more gas than cooking alone.

3. Propane, not butane, outside summer

Butane barely vaporises near 0 °C, so on a frosty night a butane bottle can stop delivering gas even when it is half full. Propane keeps working well below freezing, which is why most UK tourers use it year round. Only use the gas type and regulator your caravan or motorhome is set up for.

4. Regulator, hose and locker

Look for cracks, stiffness or perishing on the hose, check the date printed on it, and make sure connections are tight. Keep the locker vent clear and never store bottles lying down. Have the gas system checked at your habitation service.

If you smell gas, avoid flames, smoking, electrical switches and phones in the affected area. Close the bottle valve and ventilate only if safe, without delaying your escape. Leave and call your LPG supplier from a safe distance; call 999 or 112 if there is immediate danger. The National Gas Emergency Service on 0800 111 999 is primarily for mains natural gas, not a universal bottled-LPG emergency line.

Monitoring on site

The WiseTank Bluetooth sensor (TLC2412-BT) clips magnetically under a steel bottle and shows the liquid level in the TANK IOT app, with low-level alerts. It needs a steel bottle with a flat centre on the base; aluminium and composite bottles are not supported. It measures level only — it is not a leak detector.

WiseTank delivers free to the UK, usually in 7–15 working days from dispatch in China, with tracking. GBP prices are still being set, so you can reserve free with no obligation on any product page.