What Size MRCOOL Mini Split Do I Need?
MRCOOL DIY 36K BTU Complete System Bundle | 3-Ton Ductless Mini-Split for 1000–1500 Sq. Ft.
Everything you need in one box: 36K BTU indoor air handler, outdoor condenser, pre-charged lineset, and DIYPRO cable for a true do-it-yourself installation.
Transform your large space with the 5th Generation MRCOOL® DIY® 36K BTU Complete Mini-Split System. Engineered for simple, tool-free DIY installation, this all-in-one bundle delivers powerful, high-capacity heating and cooling for rooms 1000–1500 sq. ft. Perfect for large living areas, open floor plans, basements, or garage conversions.
This complete system includes everything needed for installation: the indoor air handler, outdoor condenser, pre-charged 25-ft QuickConnect® line set, and DIYPRO® cable. With no special tools or HVAC experience required, you can install professional-grade climate control without the cost or hassle of hiring a professional.
Key Features & Benefits
✅ Complete All-in-One System – Includes indoor unit, outdoor condenser, lineset, cable, and remote. No compatibility concerns or missing parts.
✅ QuickConnect® Pre-Charged Line Set – The 25-ft line set comes filled with R-454B refrigerant and uses quick-connect fittings. No vacuum pump or refrigerant gauges required, making installation truly DIY-friendly.
✅ DIYPRO® Cable Eliminates Conduit – This durable, all-in-one cable combines power and communication wiring. It resists weather, UV rays, and pests—so you can skip the metal conduit and simplify your wiring installation.
✅ Smart Control Your Way – Operate the system with the included wireless remote, the SmartHVAC app (iOS/Android), or voice commands via Amazon Alexa or Google Assistant.
✅ Follow Me Function – The remote acts as a personal thermostat. When enabled, the air handler adjusts airflow based on the remote’s location for personalized comfort throughout your space.
✅ Dry Mode – Acts as a quiet dehumidifier, removing excess moisture to improve indoor air quality and comfort on humid days.
✅ Gold Fin® Condenser – Built with corrosion-resistant fins, ideal for coastal environments and areas with high humidity or harsh weather conditions.
✅ Energy Efficient Operation – Designed for optimal performance with modern R-454B refrigerant, helping reduce energy costs while maintaining powerful climate control.
✅ Industry-Leading Warranty – Backed by a limited lifetime warranty on the condenser coil, 7-year compressor warranty, and 5-year parts warranty.
✅ Certified Safety & Reliability – Intertek listed (5031495) for verified performance and safety standards.
What’s Included in the Box
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36K BTU Wall-Mounted Indoor Air Handler
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36K BTU Outdoor Condenser Unit
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25-ft Pre-Charged QuickConnect® Refrigerant Line Set
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DIYPRO® Electrical/Communication Cable
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Wireless Remote Control
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Complete Installation Hardware Kit
Technical Specifications
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Capacity: 36,000 BTU (3-Ton)
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Coverage Area: 1000–1500 sq. ft.
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Refrigerant: R-454B (Lower GWP vs. R-410A)
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Line Set: 25 ft, Pre-Charged, QuickConnect Fittings
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Electrical: DIYPRO® Cable Included (No Conduit Needed)
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Control: Wireless Remote, SmartHVAC App, Voice Commands (Alexa/Google)
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Special Features: Follow Me, Dry Mode, Gold Fin® Condenser
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Warranty: Limited Lifetime + 7-Year Compressor + 5-Year Parts Warranty
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Certification: Intertek Listed (5031495)
What You Might Need to Complete Installation (Sold Separately)
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Condenser pad or wall-mount bracket
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Line hide cover kit (recommended for a clean finish)
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Electrical disconnect box (as required by local code)
Why MRCOOL DIY Stands Out
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America’s #1 DIY Mini-Split – Trusted for hassle-free installation and reliable performance in large spaces.
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Eco-Friendly Refrigerant – Uses modern R-454B refrigerant with a lower environmental impact than older refrigerants.
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Professional Performance, DIY Simplicity – Get the benefits of a professionally installed system without the high cost or scheduling delays.
Perfect For
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Large living rooms, great rooms, and open-concept spaces
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Basements, workshops, and garage conversions
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Home offices and studios in larger buildings
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DIY homeowners in coastal or humid climates needing high-capacity climate control
Ready to install your own high-capacity mini-split system?
The MRCOOL DIY 36K BTU Complete Bundle gives you everything needed for professional comfort with DIY ease.
Order today and transform your space this weekend!
Need a different capacity? Explore our full MRCOOL DIY lineup, available in 9K, 12K, 18K, and 24K BTU models.


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