MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 12K + 12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner & Heat Pump with Ceiling Cassettes
Build your dream comfort system with the MRCOOL DIY 5th Gen 6-Zone 55,000 BTU 22 SEER2 Ductless Mini-Split System — a complete package featuring six ceiling cassette air handlers (9K + 12K + 12K + 12K + 12K + 12K) paired with the powerful DIY-MULTI6-55HP230D-O condenser. Perfect for large homes, shops, or offices, this Energy Star–certified system delivers professional-grade performance with true DIY installation.
Each ceiling cassette installs flush within the ceiling for a clean, low-profile finish, while the system’s Quick-Connect® pre-charged line sets simplify installation — no vacuum pump or refrigerant handling required. Enjoy whisper-quiet comfort, smart-home control, and year-round efficiency even in extreme climates.
Key Features & Benefits
- ✔ Complete 6-Zone kit (9K + 12K + 12K + 12K + 12K + 12K) with 55K BTU outdoor unit.
- ✔ 22 SEER2 / 10.6 HSPF2-4 efficiency for lower energy bills.
- ✔ Heats to −13 °F and cools to 122 °F for all-season performance.
- ✔ Quick-Connect® R-454B line sets — no vacuum or charging required.
- ✔ Ceiling cassette air handlers mount flush for a clean, modern look.
- ✔ Smart control via app, Alexa & Google Assistant.
- ✔ DIYPro® cable eliminates the need for electrical conduit.
- ✔ Gold Fin® anti-corrosion coating extends unit lifespan.
- ✔ Follow Me® remote sensor tracks room temperature for personalized comfort.
- ✔ AHRI & ETL listed, Energy Star certified for verified performance.
💡 Pro Tip: Every MRCOOL DIY ceiling cassette includes the WMK-19 Smart HVAC Wi-Fi Controller — a plug-and-play adapter that connects directly to the air handler for instant Wi-Fi access. Just plug it in and connect through the MRCOOL or SmartHVAC app to enable scheduling, usage tracking, and voice control with Alexa or Google Assistant.
Technical Specifications
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Brand / Series: MRCOOL DIY 5th Gen Multi-Zone Mini-Split
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Outdoor Model: DIY-MULTI6-55HP230D-O
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Indoor Models: Ceiling Cassettes (9K + 12K × 5)
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Total BTU Capacity: 55,000 BTU Heating / 47,000 BTU Cooling
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Zones: 6
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Refrigerant: R-454B (Pre-Charged Quick-Connect)
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Voltage: 208/230 V 1 Ph 60 Hz
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Efficiency: 22 SEER2 | EER2 12 | HSPF2-4 10.6 | HSPF2-5 8.5
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Operating Range: Heat to −13 °F | Cool to 122 °F
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Sound Level: 64 dBA (Outdoor Unit)
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Compressor: DC Inverter Rotary
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Line Set Length: 25 ft each standard | Max total 221.4 ft
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Certifications: Energy Star, AHRI, ETL Listed 5031495, UL
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Warranty: 5-Year Parts | 7-Year Compressor | Limited Lifetime with MRCOOL Care registration
Buy from MRCOOL DIY Direct — America’s trusted source for genuine MRCOOL systems. Get fast nationwide delivery and expert DIY support for every install.
