DOT tanks need to be tested every 12 years, ASME tanks do not.
Most companies do not test tanks, doing gas checks or leak tests do not certify tanks.
Propane companies will not fill tanks unless you can prove the tank(s) belong to you... filling another companies tank is not done.
Some companies do not charge a rental fee as long as you use one tank per year... to set a tank which cost $500-600 and make $15 dollars per year on an account is foolish for them!
As suggested, purchase you own tank(s) then find the best price .
Placing the tank by the road and notifying them will assure a quick response.
Full 120's will weigh 700 pounds , so eat your Wheaties before you decide to move them.
