Do Propane Grills work in the Cold?
The liquid propane volume in any LP Gas container is directly related to its temperature. In fact, the volume of any liquid in any container is directly related to its temperature. Propane volume rises as temperature rises and falls as temperature falls. Being temperature dependent, propane becomes dense as the temperature falls, and expands as temperature increases. When propane tanks freeze up, usually it is a sign that the regulator is feeding the propane too fast, or there is a high level of humidity.
It is not dangerous although it can leave you without propane until the tank thaws out. The colder it is outside, the lower the pressure will be in your tank; conversely, the higher the temperature, the higher the pressure. Always keep your tank full in colder weather and aim to top it up when it is at 20 to 25% capacity. Never try to cover up your tank, as this will only insulate the propane inside the tank from the natural heat of the daytime sun, worsening the problem in the end.
Always keep the tanks regulator at the building free of ice and snow, and never pour water over it. This might cause the material to crack suddenly, allowing gas to escape unnoticed. For the same reason, among a few obvious others – never use an open flame or electrical device anywhere near a propane tank.