How much propane does a propane smoker use?

Question

Let's say I wanted to run it at 225F for 12 hours

Answer 1

You can usually get approxiamtely 18 hours of cooking time out of 20lb gas bottle for a bbq,so you'd want to have your smoker hooked up to atleast a 20lb propane bottle to run for that length of time,with some room for error.

Answer 2

Have one tank to use and keep one on the side.

Answer 3

Are there really PROPANE smokers? The operative word here is "smoke" (a by product of burnt WOOD). That being said one school of thought in smoking something like brisket (that takes 12+ hours) is to smoke it for 5 or 6 hours (that is, by theory, all the smoke it will absorb or affect flavor) then wrap it in foil and finish it in the oven. Must admit I haven't done that.