- Description
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MRCOOL® DIY® 36K BTU 5th Gen Dual-Zone Mini-Split (9K + 18K)
Powerful, Energy-Efficient Comfort You Can Install Yourself
Bring customizable comfort to your home with the MRCOOL® DIY® 5th Generation 36,000 BTU Dual-Zone Ductless Mini-Split System, featuring one 9K BTU air handler (great for medium rooms up to 400 sq. ft.) and one 18K BTU air handler (ideal for large areas up to 800 sq. ft.). With an outstanding 23 SEER2 efficiency rating, this system provides reliable heating and cooling year-round—without the high cost of professional installation.
🔧 True DIY® Installation
Designed for homeowners, not contractors:
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Quick Connect® line sets pre-charged with R-454B refrigerant make setup simple.
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No gauges, vacuum pumps, or HVAC certifications required.
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Clear step-by-step video guides walk you through installation.
🌡️ Dual-Zone Comfort, Year-Round
Enjoy independent control of two rooms with one system. Whether you’re cooling during summer, heating in the winter, or dehumidifying in humid weather, this system has you covered with multiple operating modes:
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Auto Mode – Effortlessly balances heating and cooling
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Dry Mode – Removes excess humidity without overcooling
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Sleep Mode – Energy-efficient overnight comfort
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Emergency Manual Operation – Stay in control, even if the remote isn’t handy
📱 Smart Control From Anywhere
Manage each zone individually with the MRCOOL SmartHVAC® app (iOS & Android), or control your comfort hands-free with Amazon Alexa and Google Assistant.
Every air handler also includes:
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Digital display with alerts & error codes
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Wireless remote for easy local control
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Mute mode to disable lights & sounds
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Auto-restart after power outages
🛠️ Built Tough for Long-Term Reliability
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Gold Fin® anti-corrosion condenser coating—perfect for coastal environments
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Filter cleaning reminders to keep efficiency high
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Sleek, easy-to-clean indoor units for simple maintenance
🧩 Expandable Flexibility
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This 36K BTU system supports up to 4 total indoor air handlers, so you can expand to more rooms later.
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For even bigger coverage, upgrade to the MRCOOL 36K Multi-Zone to connect up to 5 zones.
✅ Key Features
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Coverage: 9K + 18K BTU (up to 1,200 sq. ft.)
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Efficiency: 23 SEER2
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Refrigerant: Pre-Charged Quick Connect® (R-454B)
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Controls: Smart App + Voice Control (Alexa & Google Home)
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Durability: Gold Fin® Anti-Corrosion Condenser
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Technology: Follow Me® Remote Sensor, Low Ambient Cooling
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Modes: Timer, Auto, Dry, Sleep, and Manual
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Warranty: 7-Year Compressor | 5-Year Parts | Optional Lifetime Coverage
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Support: Lifetime Technical Support from MRCOOL
🐻 Comfort Made Simple
Reliable heating, cooling, and humidity control—installed by you, without the high labor costs.
Order your MRCOOL® DIY® 36K BTU 5th Gen Dual-Zone (9K + 18K) today and take charge of your comfort all year long.