Where do you live ? LOL The only place in the State of Kentucky that does that process of switching tanks is Wal-Mart and K-Mart hehe. All local Hardware stores are glad to fill my tanks. Mostly free just because I buy stuff from there stores often. Plus the tanks should last like I said 4-6 weeks with a bypass valve to split the two tanks. As long as I know it can work thats all I wanted to know. I just need a regulator and a diffuser with piping.