MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU 21.5 SEER2 Ductless Mini-Split Heat Pump System 6-Zone DIYM455HPW01D00

MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU 21.5 SEER2 Ductless Mini-Split Heat Pump System 6-Zone DIYM455HPW01D00

The MRCOOL DIY® 5th Gen Multi-Zone 55,000 BTU Ductless Mini Split Heat Pump System is a high-capacity climate control solution designed for homeowners who want efficient, customizable comfort across multiple areas of a property. This system supports up to six independently controlled zones, making it ideal for large homes, open floor plans, workshops, or finished basements where different rooms require individual temperature settings.

Designed for true DIY installation, the system features pre-charged QuickConnect® line sets that eliminate the need for specialized HVAC tools or professional refrigerant handling. The advanced DC inverter compressor delivers smooth, quiet operation while optimizing energy efficiency, helping maintain consistent comfort throughout the year.

Each indoor air handler operates independently, allowing precise temperature control in each zone. Smart control compatibility provides added convenience, enabling users to manage the system remotely and integrate it into a modern smart home environment. Durable construction and corrosion-resistant components contribute to long-term reliability in a variety of conditions.

Backed by strong manufacturer warranty coverage, the MRCOOL DIY® 5th Gen Multi-Zone system combines performance, flexibility, and ease of installation into one comprehensive heating and cooling solution.

Features

• 55,000 BTU total system capacity
• 4 independently controlled comfort zones
• (3) 6,000 BTU + (1) 36,000 BTU indoor air handlers
• Up to 21.5 SEER2 energy efficiency
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged line sets
• DIYPRO® communication cable (no conduit required)
• R-454B low-GWP refrigerant
• Gold Fin® anti-corrosion coating
• Follow Me® temperature sensing
• Smart HVAC Controller® App
• Alexa® & Google Home® compatible
• ENERGY STAR® & AHRI certified

Specifications

ELECTRICAL REQUIREMENTS & BREAKER INFO

Outdoor Condenser – DIY-MULTI6-55HP230D-O

• Voltage: 208 / 230V
• Phase: Single-Phase
• Frequency: 60 Hz
• Minimum Circuit Ampacity (MCA): 45 Amps
• Maximum Breaker Size: 50 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) 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 indoor unit

✔ Mounting hardware & installation manuals

Smartphone not included.

WARRANTY COVERAGE

• 5-Year Parts Warranty
• 7-Year Compressor Warranty
• Limited Lifetime Replacement Warranty
  (with MRCOOL® Care Program registration)

Frequently Asked Questions (FAQ)

Can the large 36K unit run independently from the smaller rooms?

Yes. Each zone operates independently with its own thermostat control.

Is professional HVAC installation required?

No. This system is designed for true DIY installation.

Is this system good for large open areas?

Absolutely. The 36K air handler is ideal for great rooms, basements, or large living spaces.

Does it support smart home controls?

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