The 16 ouncer burner is 3,500 bTU per hour, the 20 pounder burner has
a couple settings. 8,000 or 14,000, can't remember off hand. Adaptors
and tubes are sold, to run the smaller burners off gas grill tanks. So
if the smaller burner is enough to heat the area, the larger tank
would be far more cost effective. It's about a dollar a pound for gas
grill tanks, they actually fill more like 16 pounds per tank. The 16
ouncers are $2.50 or so at Walmart. As high as 3.49 in other stores.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Don Klipstein" wrote in message
...


Now, if you want a long term storage heat source, propane is your
answer. Unless it leaks out, it never goes bad, ever. 16 ouncer will
heat a room for about 7 hours, with an infared heater. Larger tank,
the "20 pounder" gas grill tank goes about 20 hours on a single
burner
infared heater. The hissing noise of the burner gets irritating
after
a while.

Is your burner the same for the "20 pounder" and the "16 ouncer"?
If so, then the 20 pounder should run 20 times as long as the 1
pounder,
good for somewhere around 140 hours if the 1 pounder is good for about
7
hours.
--
- Don Klipstein )