MRCOOL 55K 6‑Zone DIY Mini Split System w/ 18k + 24k Air Handlers Two 16ft Pre‑Charged Line Sets DIYM255HPW03D00

MRCOOL 55K 6‑Zone DIY Mini Split System w/ 18k + 24k Air Handlers Two 16ft Pre‑Charged Line Sets DIYM255HPW03D00

The MRCOOL 55K 6‑Zone DIY Mini Split System w/ 18k + 24k Air Handlers is a powerful and versatile multi‑zone HVAC solution ideal for homeowners seeking comfort control across multiple rooms without the cost or wait of professional installation. Engineered with MRCOOL’s 5th Generation double‑stack 6‑zone condenser, this system delivers efficient heating and cooling performance throughout your home, workshop, or multi‑area space. The combination of an 18,000 BTU and a 24,000 BTU wall‑mounted air handler provides balanced temperature control for medium to large rooms, open areas, and high‑traffic zones.

Installation is truly DIY‑friendly thanks to the QuickConnect® pre‑charged line sets and included DIYPRO® communication cable. These eliminate the need for vacuum pumps, refrigerant handling, and electrical conduit, saving you both time and installation costs. Each indoor unit operates independently, allowing customized comfort in each zone while the whole system seamlessly integrates with the MRCOOL Smart HVAC Controller for convenient control from your smartphone or via voice with Alexa or Google Assistant.

Built for year‑round comfort and durability, this system uses advanced inverter technology and eco‑friendly R‑454B refrigerant to help reduce operating costs and environmental impact. It also includes features like Follow Me® temperature sensing and Gold Fin® corrosion‑resistant coils for long‑term reliability in various climates. Backed by robust warranty coverage, this MRCOOL DIY system offers an excellent balance of performance, convenience, and value.

Whether you’re upgrading your home climate system, retrofitting additions, or managing multiple zones with precision, the MRCOOL 55K DIY 6‑Zone Mini Split System empowers you to take control of your comfort with professional‑grade performance and true DIY simplicity.

Features

• 55,000 BTU total system capacity for comprehensive heating and cooling coverage.

• Supports up to 6 independent comfort zones for room‑by‑room climate control.

• Includes one 18,000 BTU and one 24,000 BTU wall‑mounted air handler.

• DIY® QuickConnect® pre‑charged line sets simplify installation — no vacuum pump or refrigerant handling required.

• DIYPRO® communication cable eliminates the need for conduit and protects wiring.

• MRCOOL Smart HVAC Controller® integration for app control and scheduling.

• Compatible with Amazon Alexa and Google Assistant for voice‑activated convenience.

• Follow Me® temperature sensing, Gold Fin® corrosion protection, and inverter‑driven compressor technology.

• Energy efficient with SEER2 22 and HSPF2‑4 10.6 ratings.

• Includes wireless remotes, mounting hardware, and accessories for complete setup.

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-18-HP-WMAH-230D25-O
  18,000 BTU Wall-Mounted Air Handler (up to ~800 sq ft)
• ✔ MRCOOL® DIY-24-HP-WMAH-230D25-O
  24,000 BTU Wall-Mounted Air Handler (up to ~1,050 sq ft)
• ✔ MRCOOL® DIY16-1412-O
  16 ft DIY® QuickConnect® Line Set (1/4” x 1/2”)
• ✔ 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 system truly DIY® installable?

Yes. The DIY® QuickConnect® line sets are factory-charged, eliminating vacuuming and refrigerant handling.

Q: Can I add more indoor units later?

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

Q: Does this system support smart home control?

Yes. It works 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