MRCOOL 5TH Gen DIY Mini Split - 42,000 BTU 3 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump, DIY-BC-348HP121218

MRCOOL DIY Mini Split - 42,000 BTU 3 Zone Ceiling Cassette System (DIY-BC-348HP121218)

Transform your home or business with MRCOOL's advanced 3-zone ceiling cassette system – the perfect solution for creating customized comfort throughout medium to large properties without the complexity or expense of traditional HVAC installations. This powerful 42,000 BTU package delivers sophisticated climate management typically found in high-end commercial buildings, but with the revolutionary DIY simplicity that has made MRCOOL the choice for discerning property owners who value both performance and practicality.

Imagine maintaining perfect temperatures throughout your open-concept living space, home office, and master suite – all while preserving your interior design with sleek, ceiling-mounted units that virtually disappear overhead. No bulky wall units consuming valuable wall space, no complicated ductwork requiring major renovation – just efficient, whisper-quiet comfort flowing discretely from above.

Powered by a robust 48,000 BTU outdoor condenser featuring impressive 20.5 SEER2 and 8.5 HSPF-5 efficiency ratings, this system delivers substantial energy savings that will immediately impact your utility bills. The specialized Gold Fin® condenser coating ensures exceptional longevity even in challenging environments, while reliable heating performance down to 5°F guarantees year-round comfort regardless of external conditions.

This premium package includes three ceiling cassette air handlers specifically sized for modern living and working spaces:

• One 12,000 BTU unit ideal for medium-sized rooms up to 500 square feet – perfect for home offices, bedrooms, or smaller living areas
• Two powerful 18,000 BTU units designed for larger spaces up to 750 square feet each – ideal for great rooms, open kitchen/dining areas, or commercial spaces

Each ceiling cassette installs discreetly between standard 16" ceiling joists, creating a clean, professional appearance that complements any interior design. The low-profile design delivers multi-directional airflow for even temperature distribution while maintaining architectural integrity – no wall units to disrupt your design vision, just perfect comfort radiating invisibly from above.

What truly sets MRCOOL apart is the groundbreaking pre-charged Quick Connect Line Set technology. These specialized copper lines come pre-filled with R-410A refrigerant, eliminating the need for vacuum pumps, specialized equipment, or certified technicians. This innovation means you can confidently install a professional-grade multi-zone system yourself, saving thousands in installation costs while achieving the same premium performance.

The user-friendly design guides you through each step of the process – from mounting the indoor and outdoor units to connecting the pre-charged lines using simple hand tools. Within a weekend, you'll have implemented a sophisticated climate solution that would typically require significant professional labor and scheduling delays.

Take command of your environment with the intuitive SmartHVAC app, allowing you to manage temperatures in each zone independently from anywhere using your smartphone or tablet. Create personalized comfort schedules, adjust settings remotely, and monitor performance – all from a simple, user-friendly interface that puts complete control in your hands.

• Balanced 3-Zone Design: Perfect for medium to large homes or businesses requiring customized climate control in different areas
• Superior Energy Efficiency: 20.5 SEER2 and 8.5 HSPF-5 ratings deliver exceptional operating economy and reduced utility costs
• Architectural Integration: Low-profile ceiling cassettes preserve your interior design integrity while delivering powerful performance
• True DIY Installation: Pre-charged Quick Connect line sets enable confident self-installation without specialized tools or certifications
• Smart Home Compatibility: Complete control via smartphone or tablet with the intuitive SmartHVAC app
• Year-Round Reliability: Consistent heating performance even in temperatures as low as 5°F
• Comprehensive Protection: 7-year compressor warranty and 5-year parts warranty ensure lasting peace of mind

The MRCOOL DIY 3-Zone system represents the perfect solution for homeowners and business owners seeking professional-grade climate control without the complexity and expense of traditional HVAC installations. Whether you're enhancing your family home, upgrading your office environment, or improving an investment property, this system delivers sophisticated performance with remarkable value.

Join thousands of satisfied MRCOOL customers who have discovered the perfect balance of comfort, efficiency, and practical innovation. Take control of both your climate and your budget with the ceiling cassette system that revolutionizes how premium HVAC is installed and experienced.

Condenser (48K BTU)

• Streamlined Installation: Take control with MRCOOL’s patented Pre-Charged Quick Connect Line Sets, making installation a breeze without the need for professional assistance.
• Resilient Protection: Stay safeguarded against wear with the Gold Fin® condenser coating.
• Unmatched Efficiency: Enjoy remarkable energy savings with a 20.5 SEER2 and 8.5 HSPF-5 rating.
• Winter-Ready: Generate warmth reliably, even when outdoor temperatures reach as low as 5°F.
• Comprehensive Warranty: Benefit from a 7-year compressor warranty and a 5-year parts warranty.

Air Handler (12K BTU)

• Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 12k BTU Ceiling Cassette fits easily between 16” ceiling joists for a modern, low-profile look.
• Multi-Zone Compatibility: Operates smoothly with the DIY 4th gen MZ system to support multi-zone configurations and remove the need for ductwork.
• Ideal Coverage Area: Designed to efficiently heat or cool spaces between 376 and 500 square feet.
• Remote Control Access: Gain full control of your unit with the SmartHVAC app, providing convenience from virtually anywhere.
• Effortless Installation: Installation is a breeze with MRCOOL’s Pre-Charged Quick Connect Line Set, allowing a fast and simple setup process.

Air Handler (18K BTU)

• Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 18k BTU Ceiling Cassette fits neatly within 16” ceiling joists for a clean and unobtrusive appearance.
• Multi-Zone Compatibility: Built to work with the DIY 4th gen MZ system for multi-zone functionality and ductless operation.
• Ideal Coverage Area: Capable of managing heating and cooling needs in spaces of 501 to 750 square feet with ease.
• Remote Control Access: Take full command using the SmartHVAC app, ensuring convenience whether at home or away.
• Effortless Installation: With MRCOOL’s Pre-Charged Quick Connect Line Set, setting up the unit is fast and hassle-free—no professional tools required.