Apologies in advance if this isn't a good place to ask a question like after browsing threads here for a few minutes this but this forum seemed to have quite a few people knowledgeable in the HVAC field so I figured I'd give it a try: Ok, here's the deal. I have a gas furnace (installed last year) that is converted to run on LP gas (because natural gas is not available in my area). Anyhow, my tank is almost empty and my LP provider won't be bringing me a delivery until next week. Is it possible for me to run it temporarily off of a 20lb. propane tank? If not, is there a way to easily "fill" my larger (100 gallon) tank by transferring from the 20lb. tank a couple of times? I know none of this is ideal, just looking for a solution to keep me running for a few days until I get refilled.