hmm for those people want to know...
Green Gas is dangerous, its less smelly
Propane is dangerous, and its really really smelly
HFC134a is relatively safe, but dont huff it.
R-22 is stable, but Ozone killer properties
R-410A is safe, stable, don't smell much, but its high pressure. (People are actually looking at this one)
For those people who don't know, R-410A is a successor to R-22, it has higher pressure at SATP though. This can be ordered in bulk, however no one has order it yet. It is thought to be the best winter gas as at 0 it has the slightly higher pressure (+10-20 psi) than propane.
Last edited by kullwarrior; February 23rd, 2010 at 22:26..