Best way to connect / convert polybutylene main line to PEX A?

I've got the dreaded polybutylene in my 2 story home with a crawlspace. I'm looking to replace it, but the estimates for a whole home repipe were higher than I would've hoped.

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I'm comfortable doing minor-moderate plumbing work, so I'm planning to do the PB to PEX A conversion myself on the 1st floor. I will likely leave the 2nd floor to professionals. I'm not going to replace the service line from the house to the street at this point. My focus is on this lines inside the house.

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My question is, what's the best way to connect the 3/4" "main" PB supply line to my new PEX A piping in my crawl?

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I found one appolo connection with barbs and a crimp as well as a sharkbite. For the high pressure line I'm wary of a sharkbite. I figured the barbed and crimped style was better. I'm being cautious because I've never worked on the main supply line before.

Thanks for the help.

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https://www.lowes.com/pd/SharkBite-Max-3-4-in-Push-to-Connect-Polybutylene-Transition-Coupling/5014684783

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https://www.homedepot.com/p/Apollo-3-4-in-Brass-PEX-A-Barb-x-Polybutylene-Coupling-EPXBC3434/310850596

Posted Jun 11, 2026, 2:46 AM UTC

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