MRCOOL® 55K 6-Zone DIY® Mini Split System w/ 12k + 36K Air Handlers- two 25ft Pre- Charged Line Sets- DIYM255HPW02D07

Product Description 

Model: DIYM255HPW02D07

The MRCOOL® DIYM255HPW02D07 is a premium 55,000 BTU 6-zone DIY® mini split system designed for homeowners who want maximum coverage, flexible zoning, and professional-grade performance without paying contractor labor. Built around the powerful MRCOOL® DIY® 5th Generation double-stack 6-zone condenser, this system delivers efficient heating and cooling for large homes, barndominiums, workshops, and multi-room layouts using advanced inverter technology and next-generation R-454B refrigerant. 

This configuration pairs a 12,000 BTU wall-mounted air handler—ideal for bedrooms or offices—with a 36,000 BTU wall-mounted air handler engineered for large open spaces such as living rooms, basements, or garages. Installation is streamlined with DIY® QuickConnect® pre-charged line sets, allowing you to skip vacuum pumps, gauges, and refrigerant handling altogether. The included DIYPRO® cable eliminates the need for conduit while protecting communication wiring from weather and pests. 

Once installed, the system connects seamlessly to the MRCOOL® Smart HVAC Controller®, giving you full control from your phone. Adjust individual zone temperatures, build schedules, track energy usage, or control your comfort hands-free using Amazon Alexa or Google Assistant. Features like Follow Me® temperature sensing, Gold Fin® corrosion protection, and industry-leading warranties make this system a long-term investment that outperforms traditional HVAC setups.

This is a true DIY® multi-zone heat pump system built to scale with your space, reduce operating costs, and give you full control over your comfort.

 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-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® DIY25-1438-O
  25 ft DIY® QuickConnect® Line Set (1/4” x 3/8”)
• ✔ MRCOOL® DIY25-3858-O
  25 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 Capacity: 55,000 BTU
• Zones Supported: Up to 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 really DIY® friendly?

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

Q: Can I add more indoor units later?

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

Q: Does this system work with smart home platforms?

Yes. It integrates 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

• ✔ Authorized MRCOOL® dealer
• ✔ Factory-fresh equipment with full warranty
• ✔ Fast nationwide shipping
• ✔ Knowledgeable DIY® product support
• ✔ Trusted source for advanced multi-zone systems

When you buy from MRCOOL Direct, you’re buying from people who actually understand DIY® HVAC systems—not just a warehouse.

BUY DIRECT!

Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC
615-553-8118

Family owned & USAs #1 MRCOOL Authentication Dealer.