News

The Complete MRCOOL Universal Split System Installation Guide (2026)

Installing a MRCOOL® Universal® Split System doesn’t have to be confusing. This complete installation guide walks you through every major step—from planning and placement to wiring, refrigerant piping, startup, and maintenance. Whether you’re a homeowner researching the process or an HVAC professional looking for installation references, this guide covers the essentials for the latest R-454B MRCOOL® Universal® systems.