Ours normally lasted about 2.5 months give or take a few days over the past 3 years. The latest one we have had for over 4.5 months and it's still going. All from the same place and same size, and same amount of cooking at least. which leads me to think this one was full and the others have not been. How can you tell if a canister is full when they deliver it?

Weigh it.

When Full

When empty.

OR

How to Check Gas Bottle Level

The short version:

1. Use a jug of hot tap water from your home - More is better.

2. SLOWLY pour the hot water down one side of the gas bottle.

Be careful not to scald yourself!

3. A line of condensation may appear, indicating the gas level. If not:

4. Wait a few seconds and then run your hand down the same side of the gas bottle, where you poured the water.

5. You should feel a change of temperature at the level of the gas.

6. If you feel no difference, the gas bottle may well be empty.

** Also, please remember that gas bottles are designed to be full at 80% or just over 3/4.

This allows for the natural expansion of the gas during warmer temperatures.