MRCOOL DIY 5th Gen Mini Split - 6-Zone 48,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 12K + 9K + 6K + 6K + 6K + 6K Ceiling Cassette Air Handlers
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 48K 6-Zone system includes one 12K, one 9K and four 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 21.8 SEER2 and 10 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 Zone Coverage – One 12K cassette for a larger room, one 9K for a medium room, and four 6K units for smaller bedrooms, offices, or dens.
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Energy-Efficient Inverter Operation – DC inverter technology delivers quiet, precise, and cost-effective heating and cooling year-round.
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DIY Installation Friendly – Pre-charged No-Vac line sets allow homeowners to install easily without special HVAC tools.
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Year-Round Comfort – Heat pump system provides efficient cooling in summer and reliable heating in winter.
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Ceiling Cassette Design – Discreet installation distributes air evenly while preserving wall and floor space.
Q&A
Q: What’s included in this system?
A: A 48,000 BTU DIY heat pump condenser with six ceiling cassette air handlers: one at 12K BTU, one at 9K BTU, and four at 6K BTU.
Q: Is it DIY-friendly?
A: Yes. It comes with pre-charged R-410A No-Vac Quick Connect lines, allowing installation without vacuum pumps or special tools.
Q: Does it provide both heating and cooling?
A: Yes, this ductless heat pump system delivers efficient cooling in summer and heating in winter.
Q: What spaces is it ideal for?
A: Best for one medium room (12K), one small-to-medium room (9K), and four smaller rooms (6K each), all with independent zone control.
Q: Why ceiling cassette air handlers?
A: They mount flush with the ceiling, save wall space, and provide 360° airflow for even comfort throughout each zone.
Q: How efficient is it?
A: Equipped with inverter technology, it offers high SEER2 efficiency, quiet operation, and lower energy costs.
Q: Who should choose this setup?
A: Perfect for homeowners or small offices needing zoned comfort across mixed-size rooms with a DIY-friendly installation.
Maintenance Tips
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Clean or replace ceiling cassette filters every 1–3 months.
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Keep cassette panels and vents free of dust for optimal airflow.
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Inspect and clean outdoor condenser coils regularly.
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Check refrigerant lines, insulation, and connections for wear or leaks.
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Schedule annual professional service to maintain reliable multi-zone performance and energy efficiency.
