MRCOOL® 55K 6-Zone DIY® Mini Split System w/ 18k + 36k Air Handlers- two 16ft Pre- Charged Line Sets- DIYM255HPW04D00

Product Description 

Model: DIYM255HPW04D00

The MRCOOL® DIYM255HPW04D00 is a powerful 55,000 BTU 6-zone DIY® mini split system engineered for homeowners who want full-home comfort, advanced zoning control, and long-term efficiency—without paying contractor installation costs. Built around the MRCOOL® DIY® 5th Generation double-stack 6-zone condenser, this system delivers precise heating and cooling across multiple rooms using inverter-driven performance and next-generation R-454B refrigerant.

This configuration pairs an 18,000 BTU wall-mounted air handler for medium-to-large living spaces with a 36,000 BTU wall-mounted air handler designed for expansive open areas, workshops, garages, or great rooms. Installation is streamlined with DIY® QuickConnect® pre-charged line sets, allowing homeowners to skip vacuum pumps, gauges, and refrigerant handling entirely. The included DIYPRO® cable eliminates the need for electrical conduit while protecting system communications from weather, UV exposure, and pests.

Once installed, the system integrates seamlessly with the MRCOOL® Smart HVAC Controller®, giving you complete control of each zone from your smartphone. Set schedules, adjust temperatures independently, monitor energy usage, or control your system hands-free with Amazon Alexa or Google Assistant. Comfort-focused features like Follow Me® temperature sensing, Gold Fin® corrosion-resistant coils, and whisper-quiet operation make this system a premium, long-term HVAC solution built for real-world performance.

This is a true DIY® multi-zone heat pump system designed to scale with your home, lower operating costs, and deliver contractor-grade results—installed on your terms.

 WHAT’S INCLUDED IN THIS BUNDLE

• ✔ 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-36-HP-WMAH-230D25-O
  36,000 BTU Wall-Mounted Air Handler (up to ~1,550 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

Smart phone not included

⚙️ KEY SYSTEM SPECS & ELECTRICAL REQUIREMENTS

• Total System Capacity: 55,000 BTU
• Maximum Zones Supported: 6
• SEER2: 22
• HSPF2-4: 10.6
• Refrigerant: R-454B
• Voltage: 208/230V (Single Phase)
• Max Breaker (Condenser): 45A
• Minimum Circuit Ampacity: 43A
• Inverter-Driven Compressor: Yes
• ENERGY STAR® Certified: Yes
• AHRI Certified: Yes

❓ FREQUENTLY ASKED QUESTIONS 

Q: Is this system truly DIY® installable?

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

Q: Can I add more indoor units later?

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

Q: Does this system support smart home integration?

Yes. 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
• Eligible for the MRCOOL® Care kit program 

Why Buy From MRCOOL DIRECT?

When you order from MRCOOL Direct, you get:

• ✅ Authorized MRCOOL dealer – Your warranty is protected
• ✅ Factory-fresh units – No refurbished or mystery sources
• ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
• ✅ Financing options – Make high-efficiency comfort more affordable
• ✅ Real product support – Help with sizing, line set selection, and DIY questions
• ✅ No third-party marketplace middlemen – Just genuine MRCOOL systems from a trusted dealer

BUY DIRECT!

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615-553-8118

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