MRCOOL® DIY® 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (6K + 9K + 24K) 3 x 25ft line sets Ductless Mini-Split Air Conditioner & Heat Pump — DIYM355HPW01D37

Product Description 

Model: DIYM355HPW01D37

The MRCOOL® DIYM355HPW01D37 is a powerful 5th Generation DIY® multi-zone ductless heat pump system engineered for homeowners who want true whole-home comfort without professional HVAC labor costs. Built around the 55,000 BTU MRCOOL® DIY® 6-Zone condenser, this system delivers efficient, whisper-quiet heating and cooling to multiple rooms independently, all from one outdoor unit.

This bundle pairs the outdoor condenser with three indoor air handlers (6K, 9K, and 24K BTU), making it an ideal solution for large homes, additions, workshops, offices, or mixed-use spaces where room-by-room temperature control matters. Thanks to DIY® QuickConnect® pre-charged line sets and the included DIYPRO® cable, installation is simplified—no vacuum pump, gauges, or HVAC license required.

With 22 SEER2 efficiency, advanced DC inverter technology, and next-generation R-454B refrigerant, this system is designed to lower energy costs while delivering reliable comfort year-round—even in demanding climates.

 KEY FEATURES & PERFORMANCE HIGHLIGHTS

• 55,000 BTU total system capacity
• 6-zone capable condenser (expandable later)
• 22 SEER2 / 10.6 HSPF2-4 efficiency
• DC inverter compressor for variable output and lower energy use
• DIY® QuickConnect® line sets – factory sealed & pre-charged
• DIYPRO® cable eliminates conduit and protects communication wiring
• Gold Fin® anti-corrosion coating (coastal-ready durability)
• Follow Me® temperature sensing for precise comfort
• MRCOOL® Smart HVAC Controller® App
• Alexa® & Google Home® compatible
• Ultra-quiet indoor operation
• True independent zone control

EFFICIENCY, ELECTRICAL & BREAKER REQUIREMENTS 

Outdoor Condenser – DIY-MULTI6-55HP230D-O

• Voltage: 208 / 230V
• Phase: 1
• Frequency: 60 Hz
• Minimum Circuit Ampacity (MCA): 43A
• Maximum Breaker Size: 45A
• Dedicated Circuit Required: Yes

Always follow local electrical codes and MRCOOL® installation requirements.

PHYSICAL DIMENSIONS & WEIGHTS 

Outdoor Condenser

• Width: 37.48 in
• Height: 52.48 in
• Depth: 16.34 in
• 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

 WARRANTY (INDUSTRY-LEADING)

• 5-Year Parts Warranty
• 7-Year Compressor Warranty
• Eligible for the MRCOOL® Care Kit Program

 WHAT’S INCLUDED IN THIS BUNDLE 

• ✔ MRCOOL® DIY® 6-Zone 55K BTU Outdoor Condenser
• ✔ 6K BTU Wall-Mounted Indoor Air Handler
• ✔ 9K BTU Wall-Mounted Indoor Air Handler
• ✔ 24K BTU Wall-Mounted Indoor Air Handler
• ✔ (2) 25-ft DIY® QuickConnect® Line Sets (1/4 x 3/8)
• ✔ (1) 25-ft DIY® QuickConnect® Line Set (3/8 x 5/8)
• ✔ DIYPRO® communication cable
• ✔ Wireless remotes (per air handler)
• ✔ Installation manuals & accessories

Smart phone not included.

FREQUENTLY ASKED QUESTIONS  

Can I install this system myself?

Yes. This is a true DIY® system—no refrigerant handling, vacuuming, or special tools required.

Can I add more zones later?

Yes. The condenser supports up to 6 zones total.

Does this system heat in cold weather?

Yes. Designed for year-round heating and cooling, even in colder climates.

Is this system Energy Star certified?

Yes, the condenser is ENERGY STAR® and AHRI certified.

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!

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615-553-8118

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