MRCOOL DIY 5th Gen Mini Split - 6-Zone 55,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 12K + 9K + 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 55K 6-Zone system includes one 18K, one 12K, one 9K and three 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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Tailored Multi-Room Comfort – 55,000 BTU condenser with 18K, 12K, 9K, and 6K cassettes provides customized heating and cooling for a variety of room sizes.
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DIY-Friendly Installation – Pre-charged No-Vac line sets make setup fast and easy without requiring professional tools.
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Space-Saving Ceiling Design – OuttaSight cassettes deliver quiet, even airflow while keeping walls and floors free.
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Energy-Efficient Year-Round Use – Inverter heat pump technology ensures efficient cooling in summer and reliable heating in winter.
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Independent Zone Control – Each cassette operates individually, allowing precise comfort and energy savings for each room.
Q&A
Q: Can each zone be controlled separately?
A: Yes, each cassette features its own thermostat control for independent comfort.
Q: Does it provide both heating and cooling?
A: Yes, it’s a heat pump system for year-round comfort.
Q: Why is this DIY-friendly?
A: No-Vac pre-charged line sets allow installation without specialized tools or professional refrigerant handling.
Q: Who is this setup best for?
A: Homeowners needing flexible, zone-specific comfort across large, medium, and small rooms.
Maintenance Tips
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Clean or replace air filters in each cassette every 1–2 months to maintain proper airflow.
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Wipe cassette panels and vents regularly to reduce dust buildup.
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Inspect all condensate drain lines to prevent clogs and leaks.
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Ensure pre-charged line set connections are secure and leak-free.
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Keep the outdoor condenser free of debris, leaves, and obstructions.
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Test remote and smart control functions in all six zones.
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Schedule annual professional maintenance to ensure peak efficiency and extend system lifespan.
