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Have you had refrigerant line-sets develop pin-hole leaks?

Gary Elovitz
Gary Elovitz Member Posts: 15
edited February 13 in A-C, Heat Pumps & Refrigeration

There seem to be a lot of line-sets (especially with white insulation) that have developed pinhole leaks within 1-3 years of installation. One theory is that the leaks are the result of corrosion due to moisture and air getting in between the insulation and the copper tubing. Line-set manufacturers all include in their instructions that the ends of the insulation need to be sealed to prevent water from getting under the insulation. When I am in the field and see line-sets with white insulation, I see a lot that are not sealed. If you have installed line-sets with white insulation, please choose one of the four options below so we can see if there is any real correlation between sealing the insulation and corrosion of line-sets. Thanks!

Have you had refrigerant line-sets develop pin-hole leaks? 1 vote

I ALWAYS seal the insulation ends and I have had line-set leaks.
0% 0 votes
I ALWAYS seal the insulation ends and I have NOT had line-set leaks.
0% 0 votes
I never seal the insulation ends and I have had line-set leaks.
100% 1 vote
I never seal the insulation ends and I have NOT had line-set leaks.
0% 0 votes

Comments

  • mattmia2
    mattmia2 Member Posts: 11,712

    I have 4 dehumidifiers that have developed leaks in the copper tubing so I think it is the quality of the tubing, it has nothing to do with moisture.

  • pecmsg
    pecmsg Member Posts: 5,705
    edited February 13

    the issue with white insulation was resolved years ago.

    It was a chemical reaction between moisture and the insulation material. The ends should have been sealed!
    If you still have that crap, rip it out and replace it.

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