Skip To Content
logo image

How old can a propane tank be?


Under federal law, propane tanks - also called cylinders - can’t be more than 12 years old. At that point, an LPG tank can no longer be refilled or reused, and should be disposed of in a proper and safe manner.

Just like all things in life, time has a way of taking its toll. When it comes to a propane tank, however, there are clear ways to know if your tank’s time is coming to an end.

How can I tell how old my propane tank is?

At first glance it might seem difficult to determine when your gas grill tank is reaching its expiration date. But a little knowledge and some examination reveals a consistent way to determine your tank’s age.

Every propane tank manufactured has a series of numbers stamped on its collar, or the handle area near the top of the tank. It includes the original production date in a month-year format.

For instance, a tank produced in June of 2017 will have the date 06-17 stamped on the collar. Additional letters and numbers provide more information about the tank. An “E” at the end of the date stamp means the tank has been recertified for use, while the numbers that follow the letters “TW” indicate the tanks’ empty, or tare weight.

Regularly inspect your propane tank

Regardless of your tank’s age, it’s always a good idea to regularly inspect your tank for defects, corrosion, wear, or any damage that could affect its ability to safely deliver your propane.  

What to do with an old propane tank

Our friends at Blue Rhino have several ways you can dispose of your old propane tanks. Since there’s a possibility of propane left in the tank, many landfills, recycling centers, and scrap metal dealers will not accept unwanted tanks for recycling. However, some propane exchange companies, including Blue Rhino, will happily take your unused propane cylinders and recycle them at no cost to you. If you have a propane tank that you don’t want, place your old tank beside a Blue Rhino display and we’ll take care of the rest.