Experience customizable comfort across five rooms with the MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ductless Mini Split System with Ceiling Cassettes (6 K + 6 K + 9 K + 9 K + 18 K).
This system combines advanced inverter technology with true do-it-yourself installation—no technician required. Heat, cool, and dehumidify your home efficiently while saving thousands on professional labor.
Configuration covers every room size:
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Two 6 K BTU cassettes – up to 250 sq ft each
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Two 9 K BTU cassettes – up to 375 sq ft each
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One 18 K BTU cassette – up to 750 sq ft
All powered by a high-efficiency 36 K BTU 23 SEER2 condenser for year-round comfort.
⚙️ Key Features
✅ True DIY Installation
Each Quick Connect® line set is pre-charged with eco-friendly R-454B refrigerant, eliminating vacuum pumps and special tools. Just connect and go.
🌡️ Smart Climate Control
Control every zone from the MRCOOL SmartHVAC App or hands-free via Alexa and Google Home. Set schedules, adjust temps, and monitor energy usage anywhere.
💨 Ceiling Cassettes with Sleek Design
Recessed install fits between standard 16-inch joists. Delivers balanced airflow with whisper-quiet performance—ideal for retrofits or new construction.
♻️ Energy Efficient & Eco-Safe
Advanced DC inverter compressor paired with R-454B refrigerant provides high efficiency while reducing environmental impact.
🔒 Reliable Performance & Warranty
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7-Year Compressor Warranty
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5-Year Parts Warranty
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Optional Limited Lifetime Coverage through the MRCOOL Care Program
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Gold Fin® anti-corrosion coating for long-lasting durability
💡 Why Homeowners Choose MRCOOL DIY Ceiling Cassettes
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Heat or cool up to 1,500 sq ft across five zones
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Mix ceiling and wall handlers for custom layouts
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Auto, Sleep & Dehumidify modes for total control
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Wi-Fi and app integration for real-time monitoring
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Filter reminders & quiet operation for low maintenance
📦 What’s Included
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(1) 36 K BTU 5th Gen MRCOOL DIY Condenser
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(2) 6 K BTU Ceiling Cassettes
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(2) 9 K BTU Ceiling Cassettes
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(1) 18 K BTU Ceiling Cassette
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Pre-charged DIY Quick Connect Line Sets & Couplers
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Remote controls & installation manuals
⚡ Technical Highlights
| Specification |
Value |
| Cooling Capacity |
34 000 BTU |
| Heating Capacity |
36 000 BTU |
| Voltage |
208/230 V Single Phase |
| Refrigerant |
R-454B |
| SEER2 / HSPF2-4 |
23 / 9.9 |
| Zones Supported |
5 |
| Compressor Type |
DC Inverter Rotary |
| Noise Level |
64 dBA |
| Connectivity |
Wi-Fi, SmartHVAC App, Alexa, Google Home |
| Certifications |
AHRI, ETL, Energy Star Certified |
💬 Customer Benefits
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Install it yourself and save on HVAC labor
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0 % financing available via Affirm
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Free shipping on all orders
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Lifetime technical support from MRCOOL
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone Mini Split (6 K + 6 K + 9 K + 9 K + 18 K) provides flexible zoning, efficient performance, and clean aesthetics with easy DIY installation. Enjoy energy-saving comfort and smart controls without the contractor markup.
Build your own comfort — powered by MRCOOL DIY Direct.
