MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 12K + 12K + 6K + 6K + 6K Ceiling Cassette Air Handlers - DIY5-6ZC-55HP-12K12K12K6K6K6K

MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 12K + 12K + 6K + 6K + 6K Ceiling Cassette Air Handlers - DIY5-6ZC-55HP-12K12K12K6K6K6K

Take control of your home’s comfort with the MRCOOL® 5th Gen DIY® Multi-Zone Mini Split System — the ultimate solution for efficient, customizable, and true DIY-friendly heating and cooling.

This powerful 55K 6-Zone system includes three 12K and three 6K ceiling cassette air handlers.

Features

• Customize mini-split system: choose the perfect line set length for each zone just above the “Add to Cart” button.
• Ultra-Efficient Cooling & Heating: Enjoy up to 22 SEER2 and 10.6 HSPF2-4 for energy-efficient year-round comfort.
• Low-Profile Ceiling Cassette Design: Flush-mounted unit fits between standard ceiling joists for a clean, built-in look.
• DIY-Friendly QuickConnect® Installation: No vacuuming or professional tools needed — pre-charged line sets make setup fast and simple.
• Smart Voice & App Control: Full control via SmartHVAC app, Alexa, Google Assistant, or included wireless remote.
• Eco-Conscious Refrigerant: Uses R-454B refrigerant with a low environmental impact.
• Industry-Leading Warranty: Includes 5-year parts, 7-year compressor, and lifetime replacement with MRCOOL® Care registration.

What our Experts Think

• Powerful Multi-Zone Comfort – 55,000 BTU condenser supports 6 ceiling cassette air handlers for whole-home coverage.

• DIY-Friendly Setup – Pre-charged No-Vac line sets make installation easy without specialized tools or costly professional labor.

• Optimized Room Coverage – Three 12K units handle medium spaces, while three 6K units are perfect for smaller rooms or offices.

• Energy Efficiency – Inverter technology delivers quiet performance, lower energy bills, and consistent temperature control.

• Year-Round Use – Works as both an air conditioner and a heat pump, ensuring comfort in every season.

Q&A

Q: What’s included in this system?
A: A 55,000 BTU DIY ductless mini split condenser with six ceiling cassette air handlers: three at 12K BTU and three at 6K BTU.

Q: Is it really DIY-friendly?
A: Yes. Thanks to pre-charged R-410A No-Vac Quick Connect lines, it installs without vacuum pumps or special tools.

Q: Can it both heat and cool?
A: Absolutely. This heat pump system provides efficient year-round comfort.

Q: What type of spaces is this setup ideal for?
A: It’s perfect for a layout with three medium rooms (12K units) and three smaller rooms (6K units), balancing coverage for different space sizes.

Q: Why choose ceiling cassette air handlers?
A: They sit flush with the ceiling, free up wall space, and provide 360° airflow for consistent comfort.

Q: How efficient is it?
A: Built with inverter technology, it delivers high SEER efficiency, quieter operation, and reduced energy bills.

Q: Who should choose this system?
A: Best for homeowners or offices needing zoned comfort across a mix of medium and small rooms, with the convenience of DIY installation.

Maintenance Tips

• Clean or replace cassette air filters every 1–3 months.

• Keep ceiling cassette panels and vents dust-free.

• Inspect outdoor condenser coils and remove debris.

• Check refrigerant lines, insulation, and connections for wear.

• Schedule yearly professional service to ensure peak efficiency and reliable multi-zone performance.