MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU Ductless Mini Split Heat Pump System 6-Zone DIYM455HPW00D216

MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU Ductless Mini Split Heat Pump System 6-Zone DIYM455HPW00D216

The MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU Ductless Mini Split Heat Pump System 6-Zone DIYM455HPW00D216 is designed to deliver powerful, efficient heating and cooling across multiple areas of your home or workspace. This complete multi-zone system supports up to six independently controlled zones, making it ideal for larger residences, offices, garages, and open-concept spaces where customized comfort is essential. Powered by a 5th Generation inverter condenser, the system provides consistent temperature control while optimizing energy efficiency.

Built specifically for DIY installation, this system features MRCOOL’s QuickConnect® technology with pre-charged line sets that eliminate the need for specialized HVAC tools or professional refrigerant handling. The included indoor air handlers allow individual temperature control per zone, improving comfort while reducing wasted energy. Advanced inverter technology ensures quiet operation and smooth performance throughout the year.

The system uses R-454B refrigerant, supporting improved environmental efficiency while maintaining reliable heating and cooling performance. Durable construction, including corrosion-resistant components, helps ensure long-term reliability even in demanding conditions. Integrated smart-control capability allows users to manage settings remotely, offering convenience and flexibility for modern lifestyles.

Backed by strong manufacturer warranty coverage, the MRCOOL DIY® 5th Gen Multi-Zone system combines capacity, efficiency, and installation simplicity into one comprehensive climate control solution for multi-room applications.

Features

• 55,000 BTU total system capacity
• 6 independently controlled comfort zones
• (3) 6,000 BTU + (1) 36,000 BTU wall-mounted air handlers
• 21.5 SEER2 high-efficiency performance
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged R-454B line sets
• Extended 25-ft line-set reach for flexible layouts
• DIYPRO® cable (no conduit required)
• Gold Fin® anti-corrosion protection
• Follow Me® temperature sensing
• MRCOOL® Smart HVAC Controller® App
• Amazon Alexa® & Google Home® compatible
• ENERGY STAR® & AHRI certified

Specifications

ELECTRICAL REQUIREMENTS & BREAKER INFORMATION

Outdoor Condenser — DIY-MULTI6-55HP230D-O

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

What’s Included

✔ MRCOOL® DIY® 55,000 BTU Multi-Zone Outdoor Condenser

✔ (3) 6,000 BTU Wall-Mounted Indoor Air Handlers

✔ (1) 36,000 BTU Wall-Mounted Indoor Air Handler

✔ (3) 25-ft DIY® QuickConnect® Line Sets (1/4 × 3/8)

✔ (1) 25-ft DIY® QuickConnect® Line Set (3/8 × 5/8)

✔ DIYPRO® communication cable

✔ Wireless remotes for each indoor unit

✔ Mounting hardware & installation manuals

 Smartphone not included

Frequently Asked Questions (FAQ's)

Can each room be controlled independently?

Yes. Each indoor unit has its own thermostat and remote.

Is professional HVAC installation required?

No. This system is designed for true DIY installation.

Why use 25-ft line sets instead of 16-ft?

They provide greater flexibility for condenser placement and larger layouts.

Does it work with smart home systems?

Yes. Compatible with Alexa®, Google Home®, and the MRCOOL® Smart App.

Is this system good for large homes?

Absolutely. The 36K air handler handles large open spaces with ease.