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We are happy to help you choose the right product for your needs
Whether you are a new customer looking for a gas bottle or an existing customer looking to make an exchange, Gas On offers a full range of gas bottles to suit your needs. Buying Propane, Butane or Patio gas is easy and can be delivered direct to your door from as little as £10.00.
To choose the correct propane regulator, the key thing to check is the valve connection on your gas bottle. Propane cylinders usually require either a 27mm clip-on regulator or a screw-on POL regulator. Both types provide a standard low-pressure output of 37mbar, which is suitable for most domestic appliances.
For 7kg and 15kg Calor bottles, you’ll need a 21mm clip-on regulator that pushes securely into place.
Approximate usage durations are based on the appliance running for a few hours per day.
Propane and butane are both Liquefied Petroleum Gases (LPG), but they are suited to different uses.
Propane has a boiling point of -42°C, making it ideal for cold weather and outdoor storage. It is commonly used for central heating, static caravans, outdoor equipment, and large BBQs. Propane continues to turn from liquid into gas even in sub-zero temperatures, so it remains reliable throughout the winter.
Butane has a boiling point of around -2°C, making it better suited to indoor use or summer camping. It can struggle to vaporise efficiently in temperatures near or below freezing, which may cause appliances to stop working in cold conditions.
Temperature Performance
Propane works well in cold and sub-zero weather. Butane is less effective in freezing conditions and may stop working when temperatures drop too low.
Energy Efficiency
Propane has a slightly higher calorific value than butane, at around 50.35 MJ/kg compared with 49.1 MJ/kg, meaning it provides slightly more energy by weight.
Storage and Pressure
Propane produces a much higher vapour pressure inside the cylinder, so it requires thicker, heavier steel cylinders and should always be stored outdoors. Butane is stored at a lower pressure, allowing for lighter, more portable canisters that are suitable for indoor use.
Choosing Between Propane and Butane
Use propane for year-round outdoor appliances, static caravans, home heating systems, and larger BBQs. In the UK, propane cylinders are usually supplied in red bottles.
Use butane for portable indoor heaters, single-burner camping stoves, and lighters. In the UK, butane is usually supplied in blue bottles or aerosol-style pierceable canisters.
Patio gas is propane. It is simply a marketing term used for propane cylinders, which are often supplied in green bottles and designed for outdoor appliances. Patio gas works well all year round because propane continues to vaporise even in cold weather.
