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MRCOOL DIY 12K BTU Complete System Bundle | Single-Zone Mini-Split for 350–500 Sq. Ft.

Everything you need in one box: 12K BTU indoor + outdoor units, 25‑ft pre‑charged lineset, and DIYPRO cable—all designed for true DIY installation.

Upgrade your home comfort with the 5th Gen MRCOOL® DIY® 12K BTU Complete Mini‑Split System. This all‑in‑one bundle is engineered for effortless DIY installation—no special tools or HVAC experience required. Designed to heat and cool rooms 350–500 sq. ft., it delivers professional‑grade performance without the cost of a professional installer.

Every component is included and designed to work together: the wall‑mounted indoor air handler, outdoor condenser, 25‑ft QuickConnect® pre‑charged lineset, and DIYPRO® cable. Simply connect, mount, and enjoy year‑round comfort in a single weekend.

Why This Is the #1 DIY Mini‑Split Choice

✅ Complete System in One Box
No compatibility guesswork. This bundle includes the indoor air handler, outdoor condenser, lineset, cable, and remote—everything you need for a seamless install.

✅ QuickConnect® Makes It Truly DIY
The pre‑charged 25‑ft lineset comes filled with R‑454B refrigerant and uses quick‑connect fittings. Just attach the lines—no vacuum pump, no refrigerant gauges, no HVAC tools required. This eliminates the most complex step of traditional installations.

✅ DIYPRO® Cable Replaces Conduit
The included DIYPRO® cable combines power and communication wiring into one durable, outdoor‑rated line. It resists weather, UV rays, and pests—so you can skip the metal conduit and simplify your wiring run.

✅ Smart Control, Your Way

• Wireless remote included

• SmartHVAC app for iOS/Android—control from anywhere

• Voice commands via Amazon Alexa or Google Assistant

✅ Advanced Comfort Features

• 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.

• Dry Mode: Operates as a quiet dehumidifier to reduce excess moisture, improving indoor air quality and comfort on humid days.

• Gold Fin® Condenser: Built with corrosion‑resistant fins, ideal for coastal homes or humid climates.

• Energy Star® Certified: 23.5 SEER rating for high efficiency and lower energy bills.

✅ Industry‑Leading Warranty Protection

• Limited Lifetime Warranty on the condenser coil

• 7‑Year Compressor Warranty

• 5‑Year Parts Warranty

• Intertek Listed (5031495) for verified safety and reliability

What’s Included

• 12K BTU Wall‑Mounted Indoor Air Handler

• 12K BTU Outdoor Condenser Unit

• 25‑ft Pre‑Charged QuickConnect® Refrigerant Lineset

• DIYPRO® Electrical/Communication Cable

• Wireless Remote Control

• All Necessary Mounting Hardware

Technical Specifications

• Capacity: 12,000 BTU

• Coverage: 350–500 sq. ft.

• Efficiency: 23.5 SEER | Energy Star® Certified

• Refrigerant: R‑454B (lower GWP than R‑410A)

• Lineset: 25 ft, pre‑charged, QuickConnect fittings

• Electrical: DIYPRO® cable included (no conduit needed)

• Control: Remote, SmartHVAC App, Voice (Alexa/Google)

• Key Features: Follow Me, Dry Mode, Gold Fin® condenser

• Warranty: Lifetime + 7‑Year Compressor + 5‑Year Parts

What You Might Need (Sold Separately)

• Condenser pad or wall bracket

• Line hide cover kit (recommended for a clean look)

• Electrical disconnect box (required by most local codes)

Perfect For

• Bedrooms, home offices, studios, or living rooms

• Garages, workshops, or sunrooms

• DIYers who want professional comfort without professional installation costs

• Homeowners in coastal or humid climates (thanks to Gold Fin® protection)

Ready to install your own mini‑split?
This MRCOOL DIY 12K BTU Complete Bundle gives you everything in one box—engineered for DIY simplicity and built for lasting performance.

Order today and install it this weekend.

Need a different size? Explore our full range of single zone MRCOOL DIY Complete Systems from 9K to 36K BTU.