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AC line not run in copper ?

Ron Jr._3
Ron Jr._3 Member Posts: 603
Did an AC changeout today . The small line was standard copper . But this was the larger pipe  ..........

I don't do AC much but I never saw stuff like this used . Reminds me of flexible gas pipe , but with a heavier outer coating . It also had standard insulation covering it .

Was this common at one time ? Would this stuff handle the higer pressures of today's systems ?


  • Techman
    Techman Member Posts: 2,144

    WOW!! Haven't seen flex refrigeration tubing in 25-30 years .It was the "lineset "of it's day 40-45 years ago . It was common on G.E. systems and a couplle of others. I would lean towards NO  for the newer r410a higher pressure systems . Brings back some good memories .
  • JStar
    JStar Member Posts: 2,752
    Yes, old.

    I've cut out a lot of that stuff. It's still lurking around in older systems. I wish they made it for 410A.
  • Steve Whitbeck
    Steve Whitbeck Member Posts: 669
    flex lineset.

    They were known to leak after about 5 years.
  • Ron Jr._3
    Ron Jr._3 Member Posts: 603
    What part of the line set would fail ?

    We cut it into a few pieces and the inside looked pristine . I'll take a closeup pic of a shorty Monday .

    Was the weak link the connections at the ends ? How were they connected ?
  • Steve Whitbeck
    Steve Whitbeck Member Posts: 669

    I don't know what part leaked but if you cut into the outer insulation and put the sniffer in the hole it would go off.

    I replaced a LOT of these flex line sets in my day.
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