MRCOOL 55K 6-Zone DIY Mini Split System w/ 12k + 36k Air Handlers Two 16 ft Pre-Charged Line Sets DIYM255HPW02D00

MRCOOL 55K 6-Zone DIY Mini Split System w/ 12k + 36k Air Handlers Two 16 ft Pre-Charged Line Sets DIYM255HPW02D00

Experience whole-home comfort and precise climate control with the MRCOOL 55K 6-Zone DIY Mini Split System — a high-capacity heating and cooling solution engineered for homeowners who want professional-grade HVAC performance without professional installation costs. Built around a powerful 55,000 BTU inverter-driven outdoor condenser, this multi-zone system delivers dependable comfort to multiple rooms with exceptional efficiency and quiet operation. With included wall-mounted air handlers sized at 12,000 BTU and 36,000 BTU, you get versatile cooling and heating tailored for both mid-size living areas and large open spaces, basements, or great rooms.

Designed with MRCOOL’s patented DIY QuickConnect® technology and pre-charged 16 ft line sets, installation is dramatically simplified — no vacuum pumps, refrigerant tools, or HVAC licensing required. The included DIYPRO® communication cable further streamlines setup by eliminating the need for electrical conduit, while robust mounting hardware ensures secure long-term installation. Once connected, the system integrates seamlessly with the MRCOOL Smart HVAC Controller® for intuitive zone control from your smartphone or smart home assistant.

Enjoy advanced features like smart temperature control, energy-efficient operation with R-454B refrigerant, Follow Me® sensing, and Gold Fin® corrosion protection — thoughtfully engineered for reliability in diverse climates. This system supports up to six individually controlled zones, allowing customized comfort in bedrooms, living spaces, home offices, or any combination of rooms. Backed by industry-leading warranties, it’s a long-term investment in comfort, performance, and ease of ownership.

Whether you’re upgrading existing HVAC, retrofitting additions, or building your dream home, this MRCOOL 6-Zone DIY Mini Split System provides energy-smart solutions with the flexibility and control modern homeowners demand — all without sacrificing efficiency or professional results.

Features

• 55,000 BTU multi-zone outdoor condenser supporting up to six indoor units

• Includes one 12,000 BTU and one 36,000 BTU wall-mounted air handler

• DIY QuickConnect pre-charged line sets for fast, tool-free installation

• Two 16 ft pre-charged line sets included

• DIYPRO communication cable eliminates the need for electrical conduit

• Smart HVAC Controller compatibility for smartphone, Alexa, and Google Assistant control

• Inverter-driven compressor for efficient and quiet performance

• Follow Me temperature sensing for improved comfort accuracy

• Gold Fin corrosion-resistant coating for extended durability

• ENERGY STAR and AHRI certified

• Designed for heating and cooling multiple zones independently

Specifications

What’s Included 

• ✔ MRCOOL® DIY-MULTI6-55HP230D-O
  55,000 BTU 6-Zone 5th Gen DIY® Multi-Zone Double-Stack Condenser (230V)
• ✔ MRCOOL® DIY-12-HP-WMAH-230D25-O
  12,000 BTU Wall-Mounted Air Handler (up to ~550 sq ft)
• ✔ MRCOOL® DIY-36-HP-WMAH-230D25-O
  36,000 BTU Wall-Mounted Air Handler (up to ~1,550 sq ft)
• ✔ MRCOOL® DIY16-1438-O
  16 ft DIY® QuickConnect® Line Set (1/4” x 3/8”)
• ✔ MRCOOL® DIY16-3858-O
  16 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 really a DIY® system?

Yes. The DIY® QuickConnect® line sets are factory-charged, so no vacuuming, refrigerant gauges, or HVAC license is required.

Q: Can I add more zones later?

Yes. This condenser supports up to six indoor units total, allowing future expansion.

Q: Does it support smart home control?

Absolutely. It works with the MRCOOL® Smart HVAC Controller®, Amazon Alexa, and Google Assistant.

Q: What warranty comes with this system?

• 5-Year Parts Warranty
• 7-Year Compressor Warranty
• Limited Lifetime Replacement Warranty with MRCOOL® Care enrollment