Unveiling the 5th Generation MRCOOL® DIY® 55k BTU Multi-Zone Ductless Mini-Split Condenser—our largest, most innovative, and feature-packed DIY® system to date. This energy-efficient unit is designed to heat and cool up to six separate zones, covering a total of 2,290 sq. ft. It’s a perfect whole-home solution, and best of all, you can install it yourself—no HVAC professional required. You’ll save time and money while gaining the satisfaction of a DIY project well done. Installation is fast and simple thanks to our patented pre-charged Quick Connect® line sets. These come pre-filled with R-454B, a next-generation refrigerant that is both eco-friendly and highly efficient. With a SEER2 rating of 22 and HSPF2-4 rating of 10.6, this system is built to keep your utility bills low while delivering powerful comfort all year long. After setup, you’ll enjoy total control over your home climate. Use the SmartHVAC app—available for iOS and Android—to manage individual zones, set schedules, adjust modes, and monitor energy usage from your phone. Want even more convenience? Connect your system to Amazon Alexa or Google Home for seamless voice control. Whether you're managing comfort in one room or all six zones, control is always nearby. Your investment is protected with one of the best warranties in the industry: a 5-year parts warranty, a 7-year compressor warranty, and eligibility for the MRCOOL® Care Program. For unmatched comfort, convenience, and DIY simplicity, choose the MRCOOL® DIY® 55k BTU Multi-Zone Ductless Mini-Split system.