MRCOOL DIY® 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (6K + 9K + 24K) & three 16ft line sets Ductless Mini-Split Air Conditioner & Heat Pump — DIYM355HPW01D00

Product Description 
Model: DIYM355HPW01D00
The MRCOOL DIY® 5th Generation 55,000 BTU 6-Zone Multi-Zone Mini-Split System is designed for homeowners who want whole-home comfort, professional-level efficiency, and a true DIY installation—without paying contractor labor.
This complete system pairs the powerful MRCOOL® DIY-MULTI6-55HP230D-O condenser with a carefully matched combination of 6K, 9K, and 24K indoor air handlers, making it ideal for homes with mixed room sizes such as bedrooms, offices, living areas, and open-concept spaces.
Thanks to MRCOOL’s patented DIY® QuickConnect® line sets, this system arrives factory-charged with R-454B refrigerant, eliminating vacuum pumps, gauges, or EPA licensing. The included DIYPRO® cable removes the need for conduit, speeding up installation while improving durability.
Each zone operates independently, allowing you to fine-tune comfort room-by-room while reducing wasted energy—something traditional central HVAC systems simply can’t match.
 
 KEY FEATURES & PERFORMANCE HIGHLIGHTS

True DIY® Installation – No HVAC license required thanks to factory-sealed DIY® QuickConnect® technology
22 SEER2 High-Efficiency Performance – Advanced inverter compressor adapts output to real-time demand
6-Zone Multi-Room Control – Independently manage comfort in up to six spaces
R-454B Refrigerant – Next-generation, lower-GWP refrigerant that meets future regulations
Gold Fin® Coil Protection – Enhanced corrosion resistance for coastal or humid environments
Follow Me® Technology – The remote senses temperature where you are, not just at the wall unit
DIYPRO® Cable Included – No conduit required; added protection from weather and pests
Smart HVAC Control Built-In – Control your system from anywhere using the MRCOOL® Smart HVAC Controller® App, Amazon Alexa®, or Google Home®
Ultra-Quiet Operation – Designed for bedrooms and living spaces where noise matters

  
 EFFICIENCY, WARRANTY & LONG-TERM VALUE
This MRCOOL DIY® system isn’t just powerful—it’s engineered for long-term savings and reliability.
 Efficiency Ratings

SEER2: 22
HSPF2-4: 10.6
Compressor Type: DC Inverter
ENERGY STAR® Certified: Yes

 
ELECTRICAL REQUIREMENTS & BREAKER INFORMATION
Outdoor Condenser – DIY-MULTI6-55HP230D-O
• Voltage: 208 / 230V
• Phase: 1
• Frequency: 60 Hz
• Minimum Circuit Ampacity (MCA): 43A
• Maximum Fuse / Breaker Size: 45A
• Dedicated Circuit Required: Yes
Always follow local electrical codes and manufacturer installation guidelines.
 
Industry-Leading Warranty
When installed according to manufacturer guidelines:

5-Year Parts Warranty
7-Year Compressor Warranty

Eligible for the MRCOOL® Care Kit Program

This warranty coverage is one of the strongest available in any DIY or professional HVAC system.
  
 WHAT’S INCLUDED IN THIS COMPLETE DIY BUNDLE
✔ 1× MRCOOL® DIY-MULTI6-55HP230D-O
55,000 BTU 6-Zone Outdoor Condenser (230V)
 
✔ 1× MRCOOL® DIY-06-HP-WMAH-230D25-O
6,000 BTU Wall-Mounted Air Handler (up to ~200 sq ft)
 
✔ 1× MRCOOL® DIY-09-HP-WMAH-230D25-O
9,000 BTU Wall-Mounted Air Handler (up to ~400 sq ft)
 
✔ 1× MRCOOL® DIY-24-HP-WMAH-230D25-O
24,000 BTU Wall-Mounted Air Handler (up to ~1,050 sq ft)
 
✔ 2× MRCOOL® DIY16-1438-O
16 ft 1/4” × 3/8” Pre-Charged DIY® QuickConnect® Line Sets
 
✔ 1× MRCOOL® DIY16-3858-O
16 ft 3/8” × 5/8” Pre-Charged DIY® QuickConnect® Line Set
 
✔ Mounting hardware & wireless remotes included
 Smartphone not included
 
 IDEAL APPLICATIONS 

Whole-home multi-zone comfort
Homes with mixed room sizes
Remodels and additions
Basements, garages, offices, and bonus rooms
Replacing inefficient central HVAC systems

 
PHYSICAL DIMENSIONS & WEIGHT
Outdoor Condenser

Width: 37.48 in
Height: 52.48 in
Depth: 16.34 in
Net Weight: 245.8 lbs

  
6K Indoor Air Handler

Width: 31.57 in
Height: 11.69 in
Depth: 7.44 in
Weight: 24.5 lbs

 
9K Indoor Air Handler

Width: 31.57 in
Height: 11.69 in
Depth: 7.44 in
Weight: ~25 lbs

  
24K Indoor Air Handler

Width: 42.52 in
Height: 13.19 in
Depth: 8.90 in
Weight: ~36 lbs

 
FREQUENTLY ASKED QUESTIONS
Q: Do I need an HVAC license to install this system?
A: No. MRCOOL DIY® systems are specifically designed for homeowner installation.
 
Q: Can I control each room separately?
A: Yes. Each indoor air handler operates independently.
 
Q: Does this system work with Alexa or Google Home?
A: Yes. Smart control is built in.
 
Q: Is refrigerant included?
A: Yes. All DIY® QuickConnect® line sets are factory-charged.
 
 
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® 

Your system ships ready to install, backed by real support—not just a tracking number. 

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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