A propane grill asks for two habits: checking its connections and handling the cylinder with care. This guide compares the US Consumer Product Safety Commission’s Gas Grill fact sheet, NFPA’s grilling safety page, owner’s guides from Weber and Char-Broil, and UK advice from Gas Safe Register and Devon and Somerset Fire and Rescue Service.
The soapy-water leak check
NFPA describes brushing or spraying a bubbly soap mixture along the hose, regulator and burner connections with the cylinder valve open; bubbles mean a leak, and the cylinder should be turned off immediately. The CPSC gives a recipe of one part water to one part liquid detergent, applied with a brush, and says to check whenever you reconnect the cylinder or smell gas. Weber’s international guide gives 20 percent liquid soap to 80 percent water, or a solution from a plumbing supply shop, and Char-Broil specifies a 50/50 mild soap and water mix and warns against household cleaning agents. The recipes differ, but the sources agree on the soap-and-bubbles method, and Weber and Char-Broil add never to use a flame. Weber adds two details: do not light the burners during the test, and rinse the connections afterwards because soap solutions can be slightly corrosive.
When to check: Weber says after any storage or non-use, every time a fitting is disconnected and reconnected, and each time the cylinder is refilled and reinstalled. The CPSC adds that many accidents follow a long period of non-use or a refill.
When bubbles appear
The sources split here. The CPSC says to turn off the gas and tighten the connection, and if that fails, to close the cylinder valve and take the grill to an LP gas dealer or qualified appliance repair person. Weber’s Summit guide likewise says to turn off the gas, tighten the fitting and recheck; if the leak persists, do not use the grill and contact customer service. For leaks at the hose, regulator or cylinder end, it says never to tighten the regulator with the tank valve open. Char-Broil is stricter: if “growing” bubbles appear, do not use or move the cylinder, and contact an LP gas supplier or the fire department. Any of these ends the same way: a leak that is not fixed by the manual’s own steps means no cooking.
Storing and moving cylinders
- Upright, always. The CPSC and Weber both say to store and transport cylinders upright and secured.
- Not indoors. The CPSC says never to use or store a cylinder indoors. Weber says a disconnected cylinder must not go in a building, garage or other enclosed area; Char-Broil adds carport, porch and covered patio.
- Not near the grill. No spare cylinder under or near the grill (CPSC, Weber).
- Heat. Weber’s US guide says not to store or transport a cylinder where temperatures can reach 125°F (52°C); its international guide says 51°C. The CPSC says never to keep a filled cylinder in a hot car or trunk.
- UK storage. Devon and Somerset Fire and Rescue says to keep cylinders outside, away from direct sunlight and frost, and not to hold more than you need.
- Refilling. The CPSC says not to fill a cylinder yourself and suggests an exchange scheme. Weber recommends filling by weight and never beyond 80 percent, and says a dented, rusty or damaged-valve cylinder should not be used. It also says to treat an “empty” cylinder like a full one.
Switching off and relighting
The UK sources say to close the cylinder first, then the burner controls, so gas left in the pipework is used up. The CPSC says to turn off the burner and container valve before disconnecting, without stating an order. If the flame goes out, the CPSC says to shut off the gas, open the lid and wait at least 5 to 10 minutes, while Weber’s guide says five minutes. Weber’s Spirit support page adds that if a burner has not lit within four seconds, turn it off and wait five minutes. NFPA and Weber both say to light with the lid open.
If you smell gas
Weber’s owner’s guides give the same four steps: shut off the gas to the grill, put out any open flames, open the lid, and if the smell continues, keep away and immediately call your gas supplier or fire department (its international guide says fire service). If gas is escaping from the cylinder itself, or you hear it hiss, Weber says to move away, not to try to fix it, and to call the fire department. Weber notes that propane is heavier than air and can collect in low areas. The CPSC says to keep cigarettes, matches and flames away from a leaking grill and not to light the grill until the leak is repaired.
Where to stop
- Leak that survives the manual’s fix: stop, close the cylinder valve, and contact the manufacturer, gas supplier or a qualified technician.
- Smell that persists after the shut-off steps: leave the grill and call the gas supplier or fire service; for a leaking cylinder, Weber says not to try to fix it yourself.
- Cracked, cut or worn hose: Weber says not to use the grill. It recommends replacing the hose about every five years, and that some countries require sooner.
- Repairs to gas parts: Weber says not to repair gas-carrying or gas-burning components without contacting the manufacturer, and Gas Safe says such work is for a competent person, including on a barbecue.
- Location: the CPSC says use a grill at least 10 feet (about 3 m, our conversion) from the house, never in a garage, breezeway, carport or porch, or under a surface that will burn.
Keep reading
- Grill Flare-Ups and Grease Fires: Causes and What to Do
- Carbon Monoxide and Charcoal Grills: Keep Them Outside
- How to Clean a Grill Safely: Brushes, Bristles and Grease
- RV and Camper Grilling: Propane Safety at the Site
Sources
- CPSC: Gas Grill fact sheet (Publication 467, revised January 2013)
- NFPA: Grilling Safety Facts & Resources
- Weber Summit E-670/S-670 LP Owner’s Guide (part 52575, 2020; retailer-hosted copy)
- Weber Spirit E-210/E-310 Classic LPG Owner’s Guide (part 48626, 2016)
- Weber support: Ensuring Safe Operation of Weber Spirit Grills
- Char-Broil gas grill product guide (model 463346017; retailer-hosted copy)
- Gas Safe Register: BBQ safety
- Devon and Somerset Fire and Rescue Service: Barbecues










