HOT ! MRCOOL DIY 5th Gen 55,000 BTU 21.5 SEER2 4-Zone Ductless Mini Split Heat Pump System DIYM455HPW00D00

MRCOOL DIY 5th Gen 55,000 BTU 21.5 SEER2 4-Zone Ductless Mini Split Heat Pump System DIYM455HPW00D00

The MRCOOL DIY® 5th Gen 55,000 BTU 4-Zone Ductless Mini Split Heat Pump System DIYM455HPW00D00 is a high-performance multi-zone climate control solution engineered for homeowners who want powerful, efficient comfort across multiple rooms without the cost and delay of professional HVAC installation. Built around a 5th Generation multi-zone outdoor condenser with advanced inverter technology, this system delivers reliable year-round heating and cooling with whisper-quiet operation and energy-saving performance. It’s ideal for medium to large homes, open-plan living areas, workshops, or multi-room layouts.

Tailored for DIY installation, the system features pre-charged QuickConnect® line sets with R-454B refrigerant, eliminating the need for vacuum pumps or refrigerant handling. Four indoor wall-mounted air handlers — three rated at 6,000 BTU and one at 24,000 BTU — provide independent temperature control in each zone, allowing personalized comfort in bedrooms, living spaces, offices, and more. Each indoor handler includes its own wireless remote and thermostat for easy individual adjustments.

The innovative design supports flexible comfort management and integration with smart-home systems for remote control convenience. With corrosion-resistant outdoor components and industry-standard efficiency, this MRCOOL DIY® system provides dependable performance while helping lower energy bills. The complete package delivers powerful zoned climate control and true homeowner-friendly installation simplicity.

Backed by a comprehensive warranty, this multi-zone system combines capacity, versatility, and ease of use — making it a smart choice for multi-room cooling and heating needs.

Features

• 55,000 BTU total system capacity


• 4 independently controlled zones


• (3) 6K + (1) 24K BTU indoor air handlers


• Up to 21.5 SEER2 efficiency


• DC inverter variable-speed compressor


• DIY® QuickConnect® pre-charged line sets


• 16-ft line sets included


• DIYPRO® cable – no conduit required


• Gold Fin® anti-corrosion protection


• Follow Me® temperature sensing


• Smartphone app control


• Alexa® & Google Home® compatible


• ENERGY STAR® & AHRI certified

Specifications

Dimensions & Weight

Warranty Coverage

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: 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) 24,000 BTU Wall-Mounted Indoor Air Handler

✔ (3) 16-ft DIY® QuickConnect® Line Sets (1/4 × 3/8)

✔ (1) 16-ft DIY® QuickConnect® Line Set (1/4 × 5/8)

✔ DIYPRO® communication cable

✔ Wireless remotes for each indoor unit

✔ Mounting plates & installation manuals

Smartphone not included.

Frequently Asked Questions (FAQ)

Can each zone be controlled independently?

Yes. Each indoor unit has its own remote and temperature settings.

Is professional HVAC installation required?

No. This system is engineered specifically for true DIY installation.

Are longer line sets available?

Yes. 25-ft and 50-ft DIY QuickConnect® line sets are available separately.

Does this system work in cold climates?

Yes. The inverter compressor provides efficient heating even in low outdoor temperatures.

Is this system smart-home compatible?

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