R404a or R407c?

[minato namikaze]

I've used R407c since a year ago.
recently I get problems to get it.
Some suppliers offer me to use R404a.
which one is better??
what is the effect of using R404a to my compressors and my AC...

[NoNickName]

R404a was developed for refrigeration, not for air conditioners. Pressures of operation are higher.
Even before discussing any performance issue, I would suggest to stay with R407c.

[charlie patt]

no nick is spot on the two are not even close can they offer you anything else ref wise?

[old gas bottle]

also you need to check your oil would be compatable, i totaly agree stick with 407C.;)