Trending Now｜MRCOOL® 55K 6-Zone DIY® Mini Split System w/ 18k + 24k Air Handlers- two 16ft Pre- Charged Line Sets- DIYM255HPW03D00

Product Description 
Model: DIYM255HPW03D00
The MRCOOL® DIYM255HPW03D00 is a high-capacity 55,000 BTU 6-zone DIY® mini split system designed for homeowners who want full-home comfort, zoning flexibility, and contractor-grade performance—without contractor labor costs. Powered by the MRCOOL® DIY® 5th Generation double-stack 6-zone condenser, this system delivers efficient heating and cooling across multiple rooms using advanced inverter technology and environmentally improved R-454B refrigerant.
This bundle combines an 18,000 BTU wall-mounted air handler—perfect for medium-to-large rooms—with a 24,000 BTU wall-mounted air handler built for expansive living areas, garages, or workshops. Installation is streamlined with DIY® QuickConnect® pre-charged line sets, allowing you to skip vacuum pumps, gauges, and refrigerant handling entirely. The included DIYPRO® cable eliminates the need for electrical conduit while protecting communications wiring from weather and pests.
Once installed, the system integrates seamlessly with the MRCOOL® Smart HVAC Controller®, giving you full control from your smartphone. Set schedules, adjust each zone independently, monitor energy usage, or control your system 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 solutions in both comfort and efficiency.
This is a true DIY® multi-zone heat pump system built to scale with your home, reduce operating costs, and put total comfort control in your hands.
  
 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-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

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 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
Eligible for the MRCOOL® CareKit program 

 
 
 WHY BUY FROM MRCOOL DIRECT

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

 
When you buy from MRCOOL Direct, you’re backed by real product knowledge—not a call center.
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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