My mini split flared fitting cracked after 3 winters

Honestly I thought I did a good job when I installed my mini split in 2021. But last week I heard a hissing sound and found a hairline crack right where the flare nut meets the line set. I guess the constant freezing and thawing finally got to it. I had to call an HVAC guy to redo the flare and vacuum the system back down. Cost me $175 and two days without AC in the middle of a heatwave. Has anyone else had issues with flare connections on DIY mini splits after a few seasons?

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2 Comments

abby3084mo ago

You probably overtorqued it, that's on you.

4

ninabutler4mo ago

@abby308 "that's on you" seems a bit harsh, it's just a stripped bolt not a crime.

1