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!

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615-553-8118

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