MRCOOL DIY 5th Gen 48,000 BTU 21.5 SEER2 Multi‑Zone 6‑Zone Ductless Mini‑Split Heat Pump System DIYM448HPW03D00

MRCOOL DIY 5th Gen 48,000 BTU 21.5 SEER2 Multi‑Zone 6‑Zone Ductless Mini‑Split Heat Pump System DIYM448HPW03D00

The MRCOOL® DIY 5th Gen 48,000 BTU 21.5 SEER2 Multi‑Zone 6‑Zone Ductless Mini‑Split Heat Pump System (Model DIYM448HPW03D00) is a high‑capacity, all‑in‑one HVAC solution designed for ultimate comfort and energy efficiency throughout your home. Engineered with six independently controlled zones, this system allows precise temperature control in multiple rooms — such as bedrooms, offices, bonus areas, and larger living spaces — without the need for traditional HVAC installation labor.

Installation has never been easier thanks to MRCOOL®’s patented QuickConnect® pre‑charged line sets and DIYPRO® communication cable, which eliminate the need for vacuum pumps, gauge sets, refrigerant handling certification, or electrical conduit. With advanced DC inverter technology and Gold Fin® anti‑corrosion coils, you get superior efficiency, whisper‑quiet operation, and long‑lasting performance. Seamless integration with the MRCOOL® Smart HVAC Controller® app — plus compatibility with Amazon Alexa® and Google Home® — ensures modern, smart comfort control wherever you are.

Features

• 48,000 BTU total system capacity
• 6 independently controlled comfort zones
• (2) 6K + (1) 9K + (1) 18K BTU indoor air handlers
• Up to 21.5 SEER2 high-efficiency rating
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged line sets
• 16-ft line sets included for clean, compact installs
• DIYPRO® cable – no conduit required
• Gold Fin® anti-corrosion coil protection
• Follow Me® temperature sensing
• MRCOOL® Smart HVAC Controller® App
• Amazon Alexa® & Google Home® compatibility
• AHRI certified

Specifications

What’s Included

• ✔ MRCOOL® DIY® 48,000 BTU Multi-Zone Outdoor Condenser
• ✔ (2) 6,000 BTU Wall-Mounted Indoor Air Handlers
• ✔ (1) 9,000 BTU Wall-Mounted Indoor Air Handler
• ✔ (1) 18,000 BTU Wall-Mounted Indoor Air Handler
• ✔ (3) 16-ft DIY® QuickConnect® Line Sets (¼″ × ⅜″)
• ✔ (1) 16-ft DIY® QuickConnect® Line Set (¼″ × ½″)
• ✔ DIYPRO® communication cable
• ✔ Wireless remotes for each indoor unit
• ✔ Installation manuals & mounting hardware

Frequently Asked Questions (FAQ's)

Can each zone be controlled independently?

Yes. Every indoor air handler operates independently with its own remote, temperature setpoint, and fan speed.

Is professional HVAC installation required?

No. This system is specifically designed for true homeowner DIY installation.

Are the line sets pre-charged with refrigerant?

Yes. All included line sets are factory sealed and pre-charged with R-454B refrigerant.

Can I add smart controls later?

Yes. The system supports the MRCOOL® Smart HVAC Controller® App and voice control through Alexa® and Google Home®.

Is this system suitable for cold climates?

Yes. The 5th Gen DIY platform provides reliable heating performance in low outdoor temperatures.