MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 12K + 9K + 9K + 6K + 6K Ceiling Cassette Air Handlers - DIY5-6ZC-55HP-12K12K9K9K6K6K
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 two 12K, two 9K and two 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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Flexible Multi-Zone Comfort: 55,000 BTU total capacity with six ceiling cassette air handlers (two 12K, two 9K, two 6K) for tailored temperature control.
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DIY Installation Friendly: Simplified design lets homeowners install easily without professionals.
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High Efficiency: Advanced inverter technology ensures quiet, energy-saving operation.
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Sleek Ceiling Cassette Units: Compact, low-profile design fits seamlessly into ceilings for discreet climate control.
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Smart Home Integration: Wi-Fi enabled for remote control and scheduling via smartphone.
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Individual Zone Control: Customize temperatures room-by-room for comfort and cost savings.
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Durable & Reliable: Built with quality components for long-lasting performance.
Q&A
Q: What size area does the MRCOOL DIY 6-Zone Mini Split system cover?
A: Designed for multi-room spaces up to 3,000 sq. ft. with zoned heating and cooling.
Q: What are the air handler capacities included?
A: Two 12,000 BTU, two 9,000 BTU, and two 6,000 BTU ceiling cassette units for customizable comfort.
Q: Does this system provide both heating and cooling?
A: Yes, it offers heat pump heating and air conditioning for year-round climate control.
Q: Is this system DIY-friendly?
A: Absolutely, it’s built for easy DIY installation without the need for specialized tools or refrigerant handling.
Q: What energy-saving features does it offer?
A: Equipped with inverter technology for efficient operation and precise temperature management.
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 clogs
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Clean indoor coils and fan blades annually to maintain airflow and efficiency
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Keep outdoor condenser unit free of debris with 2–3 feet of clearance
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Schedule annual professional maintenance to check refrigerant levels and system health
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Ensure ceiling cassette vents stay unobstructed for balanced airflow
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Regularly inspect electrical connections for safety and performance
