Rick Blaine wrote:

"Pete C." wrote:

A 20# LP tank
runs my stove and I swap it out every 8-10 months.

I've run a gas grill of a 20# tank, grill 3 or 4 times a week and needed to fill
every 3-4 weeks. I suppose if all you used were the burners, it would last
longer.

A 20# LP tank runs my 5 burner dual fuel range for 8-10 months. I'm
single, but I enjoy cooking and cook a lot, often with multiple burners
active. A 100# tank would surely last the OP a year, a 40# at least 6
months.