MRCOOL® DIY® 5th Gen Multi-Zone 4-Zone 48,000 BTU 21.8 SEER2 (6K + 6K + 9K + 12K)- 4x 25ft line sets- Ductless Mini-Split Air Conditioner & Heat Pump-DIYM448HPW02D122

Product Description 

 Model: DIYM448HPW02D122

The MRCOOL® DIYM448HPW02D122 is a high-efficiency, professionally balanced 4-zone ductless mini-split system engineered for homeowners who want room-by-room comfort control, strong energy savings, and true DIY installation—without the cost, scheduling delays, or labor requirements of traditional HVAC installs.

At the core of this system is the MRCOOL® DIY® 5th Generation 48,000 BTU multi-zone condenser, paired with a carefully matched indoor configuration of two 6,000 BTU air handlers, one 9,000 BTU air handler, and one 12,000 BTU air handler. This balanced layout allows you to correctly size each space based on real heat load, making it ideal for bedrooms, offices, nurseries, guest rooms, bonus rooms, and medium living areas—all from one outdoor unit.

Installation is simplified using MRCOOL®’s patented DIY® QuickConnect® technology. The included 25-foot pre-charged DIY® QuickConnect® line sets arrive factory sealed with R-454B refrigerant, eliminating the need for vacuum pumps, gauges, or licensed refrigerant handling. The included DIYPRO® cable removes the need for conduit, further reducing install time while improving long-term durability.

With DC inverter technology, Gold Fin® corrosion-resistant coils, Follow Me® temperature sensing, and full MRCOOL® Smart HVAC Controller® integration, this system delivers quiet performance, lower utility bills, and dependable year-round comfort—all with true DIY convenience.

KEY FEATURES & PERFORMANCE HIGHLIGHTS

• 48,000 BTU total system capacity
• 4 independently controlled comfort zones
• (2) 6K + (1) 9K + (1) 12K BTU indoor air handlers
• Up to 21.8 SEER2 high-efficiency rating
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged line sets
• 25-ft line-set reach for flexible condenser placement
• DIYPRO® communication cable (no conduit required)
• Gold Fin® anti-corrosion protection
• Follow Me® temperature sensing
• MRCOOL® Smart HVAC Controller® App
• Amazon Alexa® & Google Home® compatibility
• AHRI certified

ELECTRICAL REQUIREMENTS & BREAKER INFORMATION

Outdoor Condenser — DIY-MULTI6-48HP230D-O

• Voltage: 208 / 230V
• Phase: Single-Phase
• Frequency: 60 Hz
• Minimum Circuit Ampacity (MCA): 40 Amps
• Maximum Breaker Size: 45 Amps
• Dedicated Circuit Required: Yes

DIMENSIONS & WEIGHT

Outdoor Condenser

• Width: 37.48 in
• Height: 52.48 in
• Depth: 16.34 in
• Net Weight: ~224 lbs

6K Indoor Air Handlers (each)

• Width: 31.57 in
• Height: 11.69 in
• Depth: 7.44 in
• Weight: ~24.5 lbs

9K Indoor Air Handler

• Width: 31.57 in
• Height: 11.69 in
• Depth: 7.44 in
• Weight: ~25 lbs

12K Indoor Air Handler

• Width: 31.57 in
• Height: 11.63 in
• Depth: 7.44 in
• Weight: ~24.5 lbs

WARRANTY COVERAGE 

• 5-Year Parts Warranty
• 7-Year Compressor Warranty
• Eligible for the MRCOOL® Care Kit Program

WHAT’S INCLUDED IN THIS BUNDLE 

• ✔ 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) 12,000 BTU Wall-Mounted Indoor Air Handler
• ✔ (4) 25-ft DIY® QuickConnect® Line Sets (¼″ × ⅜″)
• ✔ DIYPRO® communication cable
• ✔ Wireless remotes for each indoor unit
• ✔ Installation manuals & mounting hardware

Smart phone not included.

FREQUENTLY ASKED QUESTIONS (FAQ)

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

They allow greater flexibility for condenser placement, especially in larger homes or multi-story installs.

Can each zone be controlled separately?

Yes. Each indoor unit has independent temperature control and fan settings.

Is professional HVAC installation required?

No. This system is designed for true DIY installation with no refrigerant handling.

Does it support smart home integration?

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

Is this system efficient enough for long-term use?

Yes. The DC inverter compressor adjusts output automatically, reducing power consumption and wear.

WHY BUY FROM MRCOOL DIRECT

When you order from MRCOOL DIRECT, you get:

• ✅ Authorized MRCOOL® dealer – warranty fully protected
• ✅ Factory-fresh equipment – no refurbished units
• ✅ Fast U.S. shipping – most orders ship in 1–3 business days
• ✅ Financing options available
• ✅ Real product support – sizing, line sets & DIY help
• ✅ No marketplace middlemen

MRCOOL Direct also offers Extended Warranty options (sold separately).

That include labor and refrigeration warranty!

BUY DIRECT – FAMILY-OWNED SUPPORT

Questions? Need help sizing?

Call anytime: 615-553-8118

Family-friendly HVAC help is always just a phone call away.

MRCOOL DIRECT – USA’s #1 MRCOOL® Authentication Dealer

Buying from MRCOOL DIRECT means accuracy, warranty protection, and long-term support.

So Purchase with Confidence!