MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 12K + 12K + 9K + 9K + 6K Ceiling Cassette Air Handlers - DIY5-6ZC-55HP-12K12K12K9K9K6K
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, two 9K and one 6K ceiling cassette air handlers.
Features
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Customize mini-split system: choose the perfect line set length for each zone just above the “Add to Cart” button.
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Ultra-Efficient Cooling & Heating: Enjoy up to 22 SEER2 and 10.6 HSPF2-4 for energy-efficient year-round comfort.
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Low-Profile Ceiling Cassette Design: Flush-mounted unit fits between standard ceiling joists for a clean, built-in look.
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DIY-Friendly QuickConnect® Installation: No vacuuming or professional tools needed — pre-charged line sets make setup fast and simple.
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Smart Voice & App Control: Full control via SmartHVAC app, Alexa, Google Assistant, or included wireless remote.
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Eco-Conscious Refrigerant: Uses R-454B refrigerant with a low environmental impact.
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Industry-Leading Warranty: Includes 5-year parts, 7-year compressor, and lifetime replacement with MRCOOL® Care registration.
What our Experts Think
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Balanced Multi-Zone Comfort: 55,000 BTU total capacity with six ceiling cassette air handlers (three 12K, two 9K, one 6K) for tailored cooling and heating.
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DIY Installation Friendly: Easy-to-install design saves time and money without sacrificing performance.
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Energy-Efficient Inverter Technology: Quiet operation with optimized energy use for lower bills.
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Discreet Ceiling Cassettes: Sleek, space-saving units that blend into ceilings for minimal visual impact.
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Smart Connectivity: Wi-Fi compatible for convenient remote control and scheduling.
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Individual Zone Control: Customize temperatures per room for maximum comfort and efficiency.
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Durable Build Quality: Engineered for reliability and long-term use.
Q&A
Q: What size space does the MRCOOL DIY 6-Zone Mini Split cover?
A: Designed for multi-room areas up to 3,000 sq. ft. with customizable climate control.
Q: What are the capacities of the included air handlers?
A: Three 12,000 BTU, two 9,000 BTU, and one 6,000 BTU ceiling cassette units for flexible zoning.
Q: Does this system provide heating and cooling?
A: Yes, it offers both heat pump heating and air conditioning for year-round comfort.
Q: Is the system DIY-friendly?
A: Absolutely, it’s engineered for easy installation without professional tools or refrigerant handling.
Q: What energy efficiency features are included?
A: Utilizes inverter technology for efficient performance and precise temperature control.
Maintenance Tips
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Clean or replace air filters in each indoor unit every 30–60 days
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Inspect and clear condensate drain lines monthly to prevent blockages
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Clean indoor coils and fan blades annually for optimal performance
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Keep outdoor condenser unit clear of debris with 2–3 feet of clearance
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Schedule annual professional maintenance for refrigerant and system checks
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Ensure ceiling cassette vents stay unobstructed for balanced airflow
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Check electrical connections regularly for safety and efficiency
