manufacturers are there at the present time?
From the http://www.410a.com website
* American Standard
Karst means cave. So, I search for caves.
i was referring to refrig. manufacturers...
1. Honeywell w/AZ-20
is this dupont?....let's see hom many make 22 now?
There are many, Honeywell is the "Genetron" refrigerants, Dupont is....well Dupont. There are also alot of offshore mfgs.