HOT ! MRCOOL 55K 6‑Zone DIY Mini Split System w/ 18K + 36K Air Handlers 25ft Pre‑Charged Line Sets DIYM255HPW04D07

MRCOOL 55K 6‑Zone DIY Mini Split System w/ 18K + 36K Air Handlers 25ft Pre‑Charged Line Sets DIYM255HPW04D07

Elevate your home comfort with the MRCOOL 55K 6‑Zone DIY Mini Split System w/ 18K + 36K Air Handlers — a powerful and flexible HVAC solution designed to deliver professional‑grade heating and cooling performance without the need for traditional contractor installation. Powered by the advanced 5th Generation MRCOOL DIY® multi‑zone condenser, this system provides efficient, reliable climate control across up to six independent zones, giving you precise temperature management in every room of your home. With built‑in inverter technology and next‑generation R‑454B refrigerant, you’ll enjoy consistent comfort and energy savings year‑round.

Installation is simplified thanks to MRCOOL’s DIY® QuickConnect® pre‑charged line sets, eliminating the need for vacuum pumps, refrigerant gauges, or professional HVAC labor. Each indoor air handler comes ready with wireless remotes and mounting accessories to get you up and running quickly. Once installed, the system connects seamlessly with the MRCOOL Smart HVAC Controller™ — allowing smartphone control, scheduling, and compatibility with Alexa® and Google Assistant for true smart‑home integration.

Ideal for a mix of bedroom spaces and large open living areas, the bundled 18,000 BTU and 36,000 BTU wall‑mounted air handlers deliver balanced comfort tailored to the unique needs of your home. Quiet inverter operation and corrosion‑resistant Gold Fin® coils enhance durability, making this an excellent long‑term investment in home comfort.

Features

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  DIY® QuickConnect® pre‑charged R‑454B line sets — no HVAC tools, vacuuming, or refrigerant handling required.

  
  


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  Dual wall‑mounted indoor handlers: 18K BTU for medium spaces and 36K BTU for large rooms.

  
  


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  MRCOOL Smart HVAC Controller™ compatibility — smartphone control via app, Alexa®, and Google Assistant.

  
  


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  Inverter‑driven compressor for efficient, quiet performance.

  
  


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  Follow Me® temperature sensing and advanced comfort features.

  
  


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  Gold Fin® corrosion resistance for durability in varied climates.

  
  


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  Independent zoning capability — personalized comfort per room.

  
  

Specifications

What’s Included 

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  ✔ MRCOOL® DIY-MULTI6-55HP230D-O55,000 BTU 6-Zone 5th Gen DIY® Multi-Zone Double-Stack Condenser (230V)
  


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  ✔ MRCOOL® DIY-18-HP-WMAH-230D25-O18,000 BTU Wall-Mounted Air Handler (up to ~800 sq ft)
  


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  ✔ MRCOOL® DIY-36-HP-WMAH-230D25-O36,000 BTU Wall-Mounted Air Handler (up to ~1,550 sq ft)
  


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  ✔ MRCOOL® DIY25-1412-O25 ft DIY® QuickConnect® Line Set (1/4” x 1/2”)
  


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  ✔ MRCOOL® DIY25-3858-O25 ft DIY® QuickConnect® Line Set (3/8” x 5/8”)
  


• ✔ DIYPRO® communication cable


• ✔ Wireless remotes for each indoor unit


• ✔ Wall mounting hardware & installation accessories

Frequently Asked Questions (FAQ\'s)

Q: Is this system really DIY® installable?

Yes. DIY® QuickConnect® line sets come factory-charged, so no vacuuming or refrigerant work is required.

Q: Can I add more indoor units later?

Yes. The condenser supports up to six total zones, allowing future expansion.

Q: Does it work with smart home systems?

Yes. Fully compatible with the MRCOOL® Smart HVAC Controller®, Amazon Alexa, and Google Assistant.

Q: What warranty coverage is included?

• 5-Year Parts Warranty


• 7-Year Compressor Warranty


• Limited Lifetime Replacement Warranty with MRCOOL® Care enrollment