Hi Josip,

Here is some information you can use with your next discussion of R-22 with the HVAC people.

This information comes from the Material Safety Data Sheets (MSDS) for R-22. I found this for another discussion taking place with some other gentlemen.

“Flash Point: Will not burn
Auto-decomposition: 632 C (1170 F)

Other burning materials may cause "*****" 22 to burn weakly. Chlorodifluoromethane is not flammable at ambient temperatures and atmospheric pressure. However, chlorodifluoromethane has been shown in tests to be combustible at pressures as low as 60 psig at ambient temperature when mixed with air at concentrations of 65 volume % air. Experimental data have also been reported which indicate combustibility of "*****" 22 in the presence of certain concentrations of chlorine.”

This does not even include the comments about disrupting the heart rate, potenital oxygen deprivation, or other fun things that can happen.