Hi all,

Just wondering what folks thoughts are regarding R23 vs. R1150 for the colder stage of a cascade?

Boiling point for R1150 is lower but on the down side it's flammable. Both R23 and R1150 are legal to work with in the US without an EPA cert.

R508b is also an option but it's just a mix of R23 and R116, and I don't see any advantage to including the R116.

I'm not too worried about cost or availability as I already have or can get any of the above. More concerned about the technical side.

Again just curious to hear from anyone who has already explored this.

Thanks for any info,
-BT