MRCOOL DIY Coupler Kit – 3/8" & 5/8" (No Communication Wire) Compatible with both R-410A and R-454B MRCOOL Systems Extend your MRCOOL DIY mini split line sets effortlessly using the 3/8" & 5/8" MRCOOL DIY Coupler Kit. Designed specifically for 24k and 36k BTU mini-split air handlers, this kit is perfect for adding extra length to your system without the need for additional communication wire. Works with older 4th Gen R-410A and newest 5th Gen R-454B MRCOOL systems Includes couplers only – no communication wire Ideal for line set extensions on 24k and 36k air handler models Ensures a secure, leak-free connection for optimal performance DIY-friendly – no vacuum or special tools needed Whether you're upgrading to the latest generation or expanding your current setup, this coupler kit offers a simple, effective, and reliable solution for extending your MRCOOL pre-charged line sets. Upgrade your comfort and flexibility with confidence.
