Thanks. I am still confused. If the tank is purged, why does it need to be filled within 6 months?
I guess I cannot complain about the 15 pound fill at Home Depot or Lowes. It seems this is entirely a rip off. Most people think they are getting a full tank. In any case, both companies will take any tank in exchange. I got rid of my 10 plus year old tanks and replaced them with tanks that were made within the past couple of years. You do need to pay attention. Several times both Lowes and Home Depot have given me tanks that were many years out of date and did not show recertification. I would not have been able to get them filled while traveling. Now that I have all new tanks, I do not exchange but get them refilled.