Personalize the climate in every part of your home with the
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ductless Mini Split System with Ceiling Cassettes (6 K + 6 K + 6 K + 9 K + 12 K).
Designed for homeowners who value efficiency and independence, this system delivers powerful heating and cooling across five rooms—all installable without an HVAC crew.
Configuration coverage:
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Three 6 K BTU cassettes – ~250 sq ft each
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One 9 K BTU cassette – ~375 sq ft
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One 12 K BTU cassette – ~500 sq ft
All driven by a 36 K BTU 23 SEER2 inverter condenser for year-round performance.
⚙️ Key Features
✅ DIY Installation Made Simple
Patented Quick Connect® line sets come pre-charged with R-454B refrigerant, eliminating vacuum pumps and pro tools—just connect and tighten.
🌡️ Smart Zoning & App Control
Manage temperatures, schedules, and energy usage from the MRCOOL SmartHVAC App or with Alexa and Google Home voice commands.
💨 Low-Profile Ceiling Cassettes
Slim, recessed design fits between standard 16-inch joists for discreet installation and quiet, balanced airflow.
♻️ Energy-Efficient and Eco-Friendly
Advanced DC inverter technology and new R-454B refrigerant combine for high SEER2 efficiency and reduced environmental impact.
🔒 Backed by Strong Warranties
Includes a 7-Year Compressor Warranty, 5-Year Parts Warranty, and optional Lifetime Coverage via the MRCOOL Care Program.
Gold Fin® coating protects against corrosion for lasting reliability.
💡 Why Choose MRCOOL DIY
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Heats & cools up to ~1,500 sq ft across five zones
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Combine ceiling and wall air handlers as needed
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Auto, Sleep, and Dry modes for custom comfort
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Quiet operation with filter reminders and self-diagnostics
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Smart Wi-Fi integration for hands-free control
📦 Included in the Box
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(1) 36 K BTU 5th Gen MRCOOL DIY Condenser
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(3) 6 K BTU Ceiling Cassettes
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(1) 9 K BTU Ceiling Cassette
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(1) 12 K BTU Ceiling Cassette
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Pre-charged DIY Quick Connect Line Sets & Couplers
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Remotes and 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 (Max) |
| Connectivity |
Wi-Fi, Alexa, Google Home |
| Certifications |
AHRI, ETL, Energy Star Certified |
💬 Customer Benefits
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Save thousands with DIY installation
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Quiet operation for multi-room comfort
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Free shipping + 0 % Affirm financing
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Lifetime technical support from MRCOOL
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone (6 K + 6 K + 6 K + 9 K + 12 K) system blends versatility, efficiency, and ease of installation.
It’s the perfect setup for homeowners who want reliable, smart climate control without paying for professional HVAC labor.
DIY comfort made simple — only from MRCOOL DIY Direct.