No one wants their bottled gas to run out at the worst possible moment. This guide explains how to check how much gas you have left—safely—so you don’t get caught mid-cook or mid-shower.

Signs your gas cylinder is running low

• Flames look smaller or weaker on your appliances

• Burners take longer to ignite

• The usual hissing sound is quieter

• Performance becomes uneven or inconsistent

If you notice any of these, check your levels and consider arranging a replacement.

How to check gas levels

• Warm water test: Pour warm (not boiling) water down the side of the cylinder. After a few seconds, run your hand down the metal. The section containing liquid gas feels cool; the empty portion stays warm.

• Weigh the cylinder: Find the stamped “TARE”/“T.W.” (empty weight). Weigh the cylinder and subtract the tare to estimate remaining gas.

• Level gauge or indicator strip: Magnetic strips provide a quick visual guide when used consistently. Some cylinders have built-in gauges; if not, a magnetic indicator is a simple add-on.

Why gas seems to run out faster in cold weather
Gas use can increase in winter, but performance also depends on the type of gas. Butane does not vaporise well in low temperatures and may fail to deliver gas even when liquid remains. Propane continues to vaporise down to around −42 °C, making it the better choice for cold conditions and outdoor storage in the UK.

Safe storage for gas cylinders

• Store cylinders upright with the valve at the top

• Keep them outdoors in a cool, well-ventilated place—never in enclosed cupboards or poorly ventilated sheds

• Keep away from heat sources and direct sunlight

• Check for rust or leaks if storing long term

• Close the valve securely when not in use

Good storage reduces risk and helps your gas and equipment last longer. Refer to full storage and safety data sheets for the specific gas you use.

Replacing your gas cylinders
Don’t wait until you’re completely out. If levels are low and you’ve a busy period ahead, plan an early refill or swap.

• Use a trusted supplier such as Adams Gas for refills or replacements

• Ensure the replacement cylinder is clean, undamaged, and clearly labelled

• Double-check all connections are tight and secure

• Never attempt to refill a cylinder yourself—use an approved service

• If you rely on gas regularly, keep a spare cylinder, especially in peak seasons or remote areas

A little know-how—like the warm water test or using the tare weight—can save you from cold dinners and chilly nights. Pay attention to how your system is performing, store cylinders correctly, and always prioritise safety.

At Adams Gas, we supply high-quality, reliable cylinders—including 10 L Argon 20% CO₂ refills—and support both regular and occasional users to keep systems running efficiently. If you need advice or assistance, contact us and one of our knowledgeable team will be happy to help.