Have a 500 gal tank. Two ~400 gal fills per year most years. Our guy comes within 2-3 days of when I email him. However, will not come until we are down to or under 20% (400 gal). Refilled all of my 20# tanks for the gas grill as well. Purchased some cast iron cookware for the grill. Good to cook if the power goes out as it does every 2-3 years....
