On Tuesday, September 18, 2012 at 5:22:39 PM UTC-5, wrote:
Hi,

Is there such thing as PEX that you can use instead of copper for HVAC refrigerant?

Thanks!

Sam

There is a new product that was announced at the ASHRAE show. It has the ICC ratings for all refrigerants. It is called Multi-Flex. It is a multi layered pipe that replaces copper in line sets.