MRCOOL® DIY® 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (9k + 9k + 9k) Air Handlers & three 25ft QuickConnect® Line Sets- R-454B- Ductless Mini-Split Air Conditioner and Heat Pump DIYM327HPW05D21

Product Description 
Model: DIYM327HPW05D21
The MRCOOL® DIYM327HPW05D21 4-Zone Mini Split System is designed for homeowners who want balanced comfort across multiple rooms with longer installation reach and true DIY® simplicity. Built around the MRCOOL® DIY® 5th Generation 27,000 BTU multi-zone condenser, this system delivers efficient heating and cooling to three independent zones, each powered by a dedicated 9,000 BTU wall-mounted air handler.
 
This configuration is ideal for homes where rooms are spaced farther from the condenser location. By including 25-foot DIY® QuickConnect® line sets for each zone, this bundle provides greater installation flexibility without sacrificing efficiency or performance. Each zone operates independently, allowing customized comfort in bedrooms, offices, additions, or guest spaces.
 
Installation is truly homeowner-friendly thanks to MRCOOL® DIY® QuickConnect® technology, which eliminates vacuum pumps, refrigerant charging, and licensed HVAC labor. All line sets arrive factory-sealed and pre-charged with R-454B refrigerant, meeting modern environmental standards and future regulations.
 
Advanced comfort features like Gold Fin® corrosion protection, Follow Me® temperature sensing, and smart control through the MRCOOL® Smart HVAC Controller® allow full system management from your phone or via Amazon Alexa and Google Assistant.
 
If you need extended reach, balanced zone sizing, and professional-level performance without professional labor, the MRCOOL® DIYM327HPW05D21 is a clean, powerful solution built to last.
 
WHAT’S INCLUDED IN THIS COMPLETE DIY® BUNDLE
✔ MRCOOL® DIY® 4-Zone Outdoor Condenser
• Model: DIY-MULTI4-27HP230D-O
• 27,000 BTU | 208/230V | DC Inverter Heat Pump
• Max Breaker: 35A | Min Circuit Ampacity: 30.5A
 
✔ (3) MRCOOL® DIY® 9K BTU Wall-Mounted Air Handlers
• Model: DIY-09-HP-WMAH-230D25-O
• Independent zone control
• Ideal for rooms up to ~350 sq. ft. each
 
✔ (3) MRCOOL® DIY® 25 ft QuickConnect® Line Sets
• Model: DIY25-1438-O
• Pre-charged with R-454B refrigerant
✔ Wireless remotes for each zone
✔ DIY® QuickConnect® fittings
✔ Factory-sealed refrigerant system
Smart phone not included
  
⚙️ ELECTRICAL & SYSTEM SPECIFICATIONS

Voltage: 208/230V
Phase: Single Phase
Zones Supported: Up to 4
Refrigerant: R-454B
Condenser Max Breaker: 35 Amps
Condenser Minimum Circuit Ampacity: 30.5 Amps
Installation: True DIY® — No HVAC license required

 
❓ FREQUENTLY ASKED QUESTIONS 
Why choose 25-ft line sets instead of 16-ft?
25-ft line sets allow more flexible condenser placement and longer runs between zones.
 
Is this system DIY-install friendly?
Yes. DIY® QuickConnect® eliminates vacuuming, gauges, and refrigerant handling.
 
Can each room be set to a different temperature?
Yes. Each air handler operates independently with its own remote and thermostat.
 
Does this system work with smart devices?
Yes. Compatible with the MRCOOL® Smart HVAC Controller®, Alexa, and Google Assistant.
 
Is R-454B refrigerant future-proof?
Yes. R-454B meets current and upcoming efficiency and environmental standards.
 
 
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 MRCOOL® dealer.

BUY DIRECT!
Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC615-553-8118
Family owned & USAs #1 MRCOOL® Authentication Dealer.
 
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