Best Pipe Fittings for Connecting Pex To Copper (2026)

We selected fittings based on compatibility with PEX-to-copper transitions, connector type (push-to-connect or brass), user ratings, and value across price tiers

This roundup helps plumbers and DIYers choose pipe fittings for reliably connecting PEX to copper by comparing fit type, material, and value across commonly used options. Picks were chosen for compatibility with PEX and copper, proven connector types (push-to-connect and brass fittings), customer ratings, and overall cost-effectiveness

Top Picks

  1. 1
    SharkBite 3/8 in Push-to-Connect Brass Fitting (Pack of 6)

    SharkBite 3/8 in Push-to-Connect Brass Fitting (Pack of 6)

    SharkBite • ★ 4.3/5 • Mid-Range

    Push-to-connect brass coupling for joining two pipes in varied combinations. Easy removal with a disconnect tool and compatible with PEX, CPVC, PE-RT, SDR-9 HDPE, and copper. Customers note quick, tool-free installation and reliable leak resistance

    • push-to-connect versatility across pipe types
    • no-tools-required installation
    • easy disconnect for removal
    Check current price on Amazon →
  2. 2
  3. 3

Buying Guide

Choose the right connection type

Push-to-connect fittings simplify installation without soldering, while compression or crimp adapters are better when a sealed mechanical joint is required

Match sizes and standards

Confirm tubing size (PEX OD vs copper nominal size) and compatibility with relevant standards to avoid leaks or improper seating

Prefer corrosion-resistant materials

Brass fittings and plated components resist galvanic corrosion when joining dissimilar metals like PEX and copper

Check rated media and temperatures

Verify fittings are rated for potable water, CPVC compatibility, and the temperature/pressure range expected in the application

Balance upfront cost with reusability

Push-to-connect brass fittings typically cost more per piece but offer quick installation and often allow reuse, improving labor-value on repairs