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MRCOOL DIY 5th Gen 18K BTU Complete System Bundle | 1.5-Ton Mini-Split for 500–750 Sq. Ft.
Professional heating and cooling in one box — includes 18K BTU indoor air handler, outdoor condenser, and everything needed for true DIY installation.
Transform your space with the 5th Gen MRCOOL® DIY® 18K BTU Complete Mini‑Split System. Engineered for simple do‑it‑yourself installation, this all‑in‑one bundle delivers powerful, efficient heating and cooling for rooms 500–750 sq. ft. — perfect for larger bedrooms, living rooms, home offices, and garage conversions.
Everything is included: the indoor air handler, outdoor condenser, 25‑ft pre‑charged QuickConnect® lineset, and DIYPRO® cable. Designed to work together, this system eliminates compatibility concerns and lets you achieve professional‑grade climate control without a professional installer — or their price tag.
Why Choose This MRCOOL DIY 18K BTU Bundle?
✅ Complete System, Ready to Install
No guessing, no missing parts. This bundle contains the indoor unit, outdoor unit, lineset, cable, remote, and hardware. Unbox, mount, connect, and enjoy.
✅ QuickConnect® Makes DIY Installation Simple
The 25‑ft lineset is pre‑charged with R‑454B refrigerant and features quick‑connect fittings. Just attach the lines — no vacuum pump, no manifold gauges, no refrigerant handling required. This removes the most technical barrier to DIY HVAC installation.
✅ DIYPRO® Cable — No Conduit Needed
The included DIYPRO® cable combines power and communication lines into one durable, weather‑resistant cable. It’s built to withstand UV, moisture, and pests, so you can skip the metal conduit and simplify wiring.
✅ Smart Control Your Way
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Included wireless remote
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SmartHVAC app (iOS/Android) for control from anywhere
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Voice commands via Amazon Alexa and Google Assistant
✅ Advanced Comfort & Efficiency Features
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Follow Me Function: The remote acts as a personal comfort sensor. Enable this mode, and the air handler adjusts airflow based on where you are in the room.
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Dry Mode: Operates as a quiet dehumidifier, removing excess moisture to improve comfort and air quality without overcooling.
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Gold Fin® Condenser: Corrosion‑resistant fins stand up to coastal air, humidity, and harsh weather.
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Energy Star® Certified: High efficiency rating helps lower energy bills while keeping you comfortable.
✅ Industry‑Leading Warranty & Certification
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Limited Lifetime Warranty on the condenser coil
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7‑Year Compressor Warranty
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5‑Year Parts Warranty
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Intertek Listed (5031495) for verified safety and performance
What’s in the Box
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18K BTU Wall‑Mounted Indoor Air Handler
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18K BTU Outdoor Condenser Unit
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25‑ft Pre‑Charged QuickConnect® Refrigerant Lineset
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DIYPRO® Electrical/Communication Cable
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Wireless Remote Control
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Full Installation Hardware Kit
Technical Specifications
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Capacity: 18,000 BTU (1.5‑Ton)
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Coverage: 500–750 sq. ft.
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Efficiency: Energy Star® Certified
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Refrigerant: R‑454B (lower GWP vs. R‑410A)
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Lineset: 25 ft, pre‑charged, QuickConnect fittings
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Electrical: DIYPRO® cable included (no conduit required)
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Control: Remote, SmartHVAC App, Voice (Alexa/Google)
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Special Features: Follow Me, Dry Mode, Gold Fin® condenser
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Warranty: Lifetime + 7‑Year Compressor + 5‑Year Parts
What You Might Need (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)
Ideal For
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Larger bedrooms, living rooms, and home offices
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Garages, workshops, and bonus rooms
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DIY‑minded homeowners who want pro‑level comfort without pro‑level costs
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Coastal or humid climates (thanks to Gold Fin® protection)
Ready to install your own high‑capacity mini‑split?
This MRCOOL DIY 18K BTU Complete Bundle gives you a professional‑grade system designed for DIY simplicity.
Order today — install it this weekend.
Need a different size? Explore the full MRCOOL DIY lineup from 9K to 36K BTU.