Description
MRCOOL DIY 5th Gen Mini Split – 6-Zone 48,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 9K + 9K + 9K + 6K + 6K Ceiling Cassette Air Handlers
Take control of your home’s comfort with the MRCOOL5th Gen DIYMulti-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 18K, three 9K and two 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 21.8 SEER2 and 10 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 QuickConnectInstallation: 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 MRCOOLCare registration.
What our Experts Think
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Smart Multi-Zone Comfort – One 18K cassette handles the largest room, three 9K units cover medium spaces, and two 6K units are perfect for smaller bedrooms or offices.
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Energy-Efficient Inverter Technology – DC inverter ensures quiet, precise, and efficient operation for lower energy bills.
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DIY-Friendly Setup – Pre-charged No-Vac line sets allow homeowners to install easily without special HVAC tools.
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Year-Round Climate Control – Heat pump system provides both efficient cooling in summer and reliable heating in winter.
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Discreet Ceiling Cassette Design – Saves wall and floor space while distributing air evenly throughout each room.
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 18K BTU, three at 9K BTU, and two at 6K BTU.
Q: Is this system DIY-friendly?
A: Yes. It features pre-charged R-410A No-Vac Quick Connect lines, allowing installation without vacuum pumps or professional refrigerant handling.
Q: Can it provide both cooling and heating?
A: Absolutely. This ductless heat pump system delivers efficient year-round comfort.
Q: What kind of spaces is it ideal for?
A: Best for one large room (18K), three medium rooms (9K each), and two smaller rooms (6K each), all with independent zone control.
Q: Why choose ceiling cassette air handlers?
A: They install flush with the ceiling, save wall space, and provide 360° airflow for even comfort throughout each zone.
Q: How energy efficient is it?
A: With inverter technology, the system provides high SEER2 efficiency, quiet operation, and reduced energy bills.
Q: Who should choose this setup?
A: Ideal for mixed-size homes or offices needing zoned comfort and DIY-friendly installation.
Maintenance Tips
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Clean or replace cassette filters every 1–3 months.
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Keep ceiling cassette panels and vents free from dust.
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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 ensure reliable multi-zone performance and energy efficiency.
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