MRCOOL DIY® Coupler Set – 1/2" x 1/4" or 3/8" x 1/4" Quick Connect (No Communication Wire)

MRCOOL DIY® 1/2" x 1/4" Coupler Kit – Without Communication Wire Easily extend your MRCOOL DIY® system with this 1/2" x 1/4" Coupler Kit. Designed to connect two pre-charged Quick Connect line sets together, this kit gives you the flexibility to run longer refrigerant lines while keeping installation simple. 🔹 Important Notes: This listing is for couplers only (no communication/control wire included). If you extend your system beyond the standard 25 ft. line set, you may also need an extended control wire kit. We offer couplers with control wire included if needed. Many homeowners choose to route refrigerant lines and control wires along different paths — these couplers make that possible. Compatibility: Works with single-zone and multi-zone systems. Compatible with both 4th Gen and older MRCOOL systems (R-410A) and 5th Gen systems (R-454B). For 6k, 9k, 12k, and 18k air handlers (wall and ceiling cassette). 24k and 36k air handlers require a larger coupler kit (sold se