Enjoy total home comfort and professional-grade performance with the MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ductless Mini Split System with Ceiling Cassettes. Designed for true do-it-yourself installation, this multi-zone system delivers quiet, efficient heating and cooling for up to five rooms — without the need for ductwork or special tools.
This configuration includes:
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One 6 K BTU cassette – ideal for ~250 sq ft
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Three 9 K BTU cassettes – ideal for ~350–400 sq ft each
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One 18 K BTU cassette – ideal for ~700–800 sq ft
All powered by a 36 K BTU 23 SEER2 inverter condenser for unmatched energy savings and reliability.
⚙️ Key Features
✅ Easy DIY Installation
Skip the HVAC crew. Every line set comes pre-charged with eco-friendly R-454B refrigerant, and the patented Quick Connect® fittings make installation fast, leak-free, and safe — no vacuum pump required.
🌡️ Smart Climate Control
Adjust temperatures, set schedules, and monitor performance right from the MRCOOL SmartHVAC App, or use Amazon Alexa and Google Home voice commands for touch-free control.
💨 Slim Ceiling Cassette Design
Low-profile indoor cassettes sit discreetly between standard 16-inch joists — perfect for retrofits or new construction. Directional airflow and whisper-quiet operation keep every room perfectly balanced and comfortable.
♻️ Energy Efficient & Eco-Friendly
Advanced DC inverter technology and R-454B refrigerant deliver high SEER2 performance with lower environmental impact. Enjoy comfort while reducing your carbon footprint and energy bills.
🛠️ Built for Reliability
Includes 7-Year Compressor Warranty, 5-Year Parts Warranty, and optional Limited Lifetime Replacement Coverage through the MRCOOL Care Program. Gold Fin® condenser coating prevents corrosion for years of dependable performance.
💡 Why Choose MRCOOL DIY Multi-Zone
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Heat or cool up to 1,500 sq ft across five zones
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Auto, Sleep, and Dehumidify modes for personalized comfort
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Wi-Fi and app integration with real-time diagnostics
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Quiet mode and filter reminder functions for low maintenance
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Compatible with both ceiling cassettes and wall-mounted air handlers
📦 What’s Included
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(1) 36 K BTU MRCOOL DIY 5th Gen Multi-Zone Condenser
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(1) 6 K BTU Ceiling Cassette Air Handler
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(3) 9 K BTU Ceiling Cassette Air Handlers
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(1) 18 K BTU Ceiling Cassette Air Handler
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Pre-charged DIY Quick Connect line sets and couplers
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Installation manuals and remote controllers
⚡ Technical Highlights
| Specification |
Value |
| Cooling Capacity |
34,000 BTU |
| Heating Capacity |
36,000 BTU |
| Voltage |
208/230 V Single Phase |
| Refrigerant |
R-454B (Eco-Safe) |
| SEER2 / HSPF2-4 |
23 / 9.9 |
| Max Zone Capacity |
5 Indoor Units |
| Compressor Type |
DC Inverter Rotary |
| Noise Level |
64 dBA (Max) |
| Connectivity |
Wi-Fi, Alexa, Google Home, SmartHVAC App |
| Certifications |
ETL, AHRI, Energy Star Certified |
💬 Customer Benefits
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No professional installation needed — save thousands
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Instant zoning comfort for every room
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Free shipping + 0 % Affirm financing available
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Backed by MRCOOL’s lifetime technical support
📘 Warranty & Support
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7 Year Compressor Warranty
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5 Year Parts Warranty
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Limited Lifetime Replacement (with MRCOOL Care Program)
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U.S. Technical Support and Easy-Access Service Guides
🏁 The DIY Comfort Advantage
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone System offers professional results with homeowner convenience.
From its quiet ceiling cassette design to its smart automation and eco-friendly refrigerant, it’s built for comfort, control, and confidence — all without hiring a pro.
DIY your way to year-round comfort — fast setup, smart control, and powerful performance from MRCOOL DIY Direct.
