MRCOOL® 27K 4-Zone DIY® Mini Split System with two 6K + 9k Air Handlers & 25ft QuickConnect® Line Sets- R-454B- DIYM327HPW01D21

Product Description 

Model: DIYM327HPW01D21

The MRCOOL® DIYM327HPW01D21 is a powerful and flexible 27,000 BTU 4-zone DIY® mini split system built for homeowners who want professional-level comfort without professional installation costs. Powered by the MRCOOL® 5th Generation DIY® multi-zone condenser, this system delivers efficient, quiet heating and cooling using next-generation R-454B refrigerant.

This bundle includes two 6,000 BTU wall-mounted air handlers and one 9,000 BTU air handler, making it ideal for bedrooms, offices, guest rooms, nurseries, or smaller living spaces where independent temperature control matters. Each zone operates independently, allowing precise comfort control and reduced energy waste.

Installation is genuinely DIY-friendly thanks to MRCOOL® DIY® QuickConnect® pre-charged line sets, eliminating vacuum pumps, gauges, or refrigerant handling. The included DIYPRO® cable removes the need for electrical conduit while protecting communication wiring from weather and pests. Built-in Gold Fin® corrosion protection ensures long-term reliability, even in coastal or humid environments.

Once installed, full control is at your fingertips using the MRCOOL® Smart HVAC Controller®. Adjust temperatures, create schedules, and monitor energy usage from your smartphone—or use Amazon Alexa or Google Assistant for hands-free operation. Comfort-boosting features like Follow Me® temperature sensing, inverter-driven performance, and ultra-quiet operation make this system a smart long-term investment.

 WHAT’S INCLUDED IN THIS BUNDLE

• ✔ MRCOOL® DIY-MULTI4-27HP230D-O
  27,000 BTU 4-Zone 5th Gen DIY® Multi-Zone Condenser (230V)
• ✔ (2) MRCOOL® DIY-06-HP-WMAH-230D25-O
  6,000 BTU Wall-Mounted Air Handlers (up to ~200 sq ft each)
• ✔ (1) MRCOOL® DIY-09-HP-WMAH-230D25-O
  9,000 BTU Wall-Mounted Air Handler (up to ~350 sq ft)
• ✔ (3) MRCOOL® DIY25-1438-O
  25 ft DIY® QuickConnect® Line Sets (1/4” x 3/8”)
• ✔ 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: 27,000 BTU
• Zones Installed: 3 (Supports up to 4 zones)
• SEER2: Up to 23
• HSPF2-4: Up to 9.9
• Refrigerant: R-454B
• Voltage: 208/230V (Single Phase)
• Max Breaker (Condenser): 25A
• Minimum Circuit Ampacity: 21A
• Inverter-Driven Compressor: Yes
• ENERGY STAR® Certified: Yes
• AHRI Certified: Yes

❓FREQUENTLY ASKED QUESTIONS 

Q: Can I add another indoor unit later?

Yes. The condenser supports up to four indoor air handlers.

Q: Do I need HVAC tools or a license?

No. DIY® QuickConnect® technology eliminates vacuuming and refrigerant handling.

Q: Can each room be controlled separately?

Yes. Each zone operates independently through the MRCOOL® Smart HVAC Controller®.

Q: What warranty 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!

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.