MRCOOL® DIY® 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (6K + 9K + 36K) 3 x 16ft line sets Ductless Mini-Split Air Conditioner & Heat Pump — DIYM355HPW02D00

Product Description 

Model: DIYM355HPW02D00

The MRCOOL® DIYM355HPW02D00 is a high-capacity 5th Generation DIY® multi-zone mini-split system designed for homeowners who demand serious heating and cooling power without paying contractor labor costs. Built around the MRCOOL® DIY® 55,000 BTU 6-Zone condenser, this system delivers efficient, quiet, room-by-room comfort across large homes, workshops, offices, and multi-room additions.

This configuration pairs the outdoor condenser with three indoor air handlers (6K, 9K, and a powerful 36K BTU unit)—perfect for layouts that include large open living areas plus smaller bedrooms or offices. Every connection is simplified using DIY® QuickConnect® pre-charged line sets and the rugged DIYPRO® cable, eliminating the need for vacuum pumps, refrigerant handling, or specialized HVAC tools.

With 22 SEER2 efficiency, DC inverter technology, and next-generation R-454B refrigerant, this system is engineered to reduce energy consumption while delivering dependable comfort in both extreme heat and cold.

KEY FEATURES & PERFORMANCE HIGHLIGHTS 

• 55,000 BTU total system capacity
• 6-zone capable outdoor condenser
• 22 SEER2 / 10.6 HSPF2-4 efficiency
• DC inverter compressor for precise output control
• DIY® QuickConnect® pre-charged line sets
• DIYPRO® cable (no conduit required)
• Gold Fin® corrosion-resistant coating
• Follow Me® temperature sensing technology
• MRCOOL® Smart HVAC Controller® App
• Amazon Alexa® & Google Home® compatibility
• Ultra-quiet indoor operation
• Independent zone temperature control

 ELECTRICAL REQUIREMENTS & BREAKER INFORMATION

Outdoor Condenser – DIY-MULTI6-55HP230D-O

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

Always follow local electrical codes and MRCOOL® installation guidelines.

DIMENSIONS & WEIGHT

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

36K Indoor Air Handler

• Width: 49.57 in
• Height: 14.25 in
• Depth: 11.10 in
• Weight: ~49 lbs

 WARRANTY COVERAGE

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

 WHAT’S INCLUDED IN THIS BUNDLE

• ✔ MRCOOL® DIY® 55K BTU 6-Zone Outdoor Condenser
• ✔ 6K BTU Wall-Mounted Indoor Air Handler
• ✔ 9K BTU Wall-Mounted Indoor Air Handler
• ✔ 36K BTU Wall-Mounted Indoor Air Handler
• ✔ (2) 16-ft DIY® QuickConnect® Line Sets (1/4 × 3/8)
• ✔ (1) 16-ft DIY® QuickConnect® Line Set (3/8 × 5/8)
• ✔ DIYPRO® communication cable
• ✔ Wireless remotes for each air handler
• ✔ Installation manuals & mounting hardware

Smart phone not included.

FREQUENTLY ASKED QUESTIONS 

Is this system truly DIY?

Yes. This system is designed for true homeowner installation—no refrigerant handling or vacuuming required.

Can I add more zones later?

Yes. The condenser supports up to six total indoor units.

Does this system work in cold weather?

Yes. The inverter heat pump provides reliable heating in low-temperature conditions.

Is this system 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!

Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC
615-553-8118

Family owned & USAs #1 MRCOOL® Authentication Dealer.