HOT ! MRCOOL DIY 5th Gen 48,000 BTU 21.8 SEER2 4‑Zone Ductless Mini‑Split Air Conditioner & Heat Pump System – (3×6K + 24K) with 25 ft QuickConnect Line Sets — DIYM448HPW01D216

MRCOOL DIY 5th Gen 48,000 BTU 21.8 SEER2 4‑Zone Ductless Mini‑Split Air Conditioner & Heat Pump System – (3×6K + 24K) with 25 ft QuickConnect Line Sets — DIYM448HPW01D216

The MRCOOL DIY® 5th Gen 48,000 BTU 21.8 SEER2 4‑Zone Ductless Mini‑Split System (DIYM448HPW01D216) is a powerful multi‑zone home comfort solution engineered for flexibility, efficiency, and true DIY installation. Designed to serve four independently controlled zones, this 5th Generation MRCOOL system combines a robust outdoor heat pump/condenser with precision‑matched indoor air handlers to deliver year‑round cooling and heating performance with reduced energy costs.

Ideal for homes with multiple living spaces — such as bedrooms, offices, open‑concept living areas, or master suites — this system comes complete with extended 25‑foot QuickConnect® line sets that allow for greater placement flexibility without requiring professional HVAC tools or refrigerant handling. Each zone operates independently, giving you precise comfort control in every room and improved overall efficiency.

Equipped with DC inverter technology, Gold Fin® anti‑corrosion protection, and compatibility with the MRCOOL® Smart HVAC Controller® App — plus voice control via Amazon Alexa® and Google Home® — this system blends modern connectivity with premium performance. Its thoughtful design makes installation, control, and maintenance simple, while delivering quiet, reliable operation that enhances comfort throughout your home.

Features

• 48,000 BTU total system capacity


• 4 independently controlled zones


• Three 6,000 BTU zones + one 24,000 BTU zone


• 21.8 SEER2 high-efficiency rating


• DC inverter variable-speed compressor


• DIY® QuickConnect® pre-charged line sets


• Extended 25-ft line-set reach


• 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

What’s Included 

• ✔ MRCOOL® DIY® 48,000 BTU Multi-Zone Outdoor Condenser


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


• ✔ (1) 24,000 BTU Wall-Mounted Indoor Air Handler


• ✔ (3) 25-ft DIY® QuickConnect® Line Sets (1/4 × 3/8) — for 6K air handlers


• ✔ (1) 25-ft DIY® QuickConnect® Line Set (1/4 × 1/2) — for 24K air handler


• ✔ DIYPRO® communication cable


• ✔ Wireless remotes for each zone


• ✔ Installation manuals & mounting hardware

Frequently Asked Questions (FAQ\'s)

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

This allows more flexible condenser placement for larger homes or longer routing paths.

Is this system truly DIY?

Yes. MRCOOL® DIY® QuickConnect® technology eliminates vacuuming and refrigerant handling.

Can each zone be controlled separately?

Absolutely. Each air handler operates independently with its own thermostat and remote.

Does this system support smart control?

Yes. Control via the MRCOOL® Smart HVAC Controller® App, Alexa®, or Google Home®.