MRCOOL DIY 5th Gen 55,000 BTU 4-Zone Mini-Split System (6K + 6K + 6K + 24K), 4x 16ft line sets- 21.5 SEER2 – Model DIYM455HPW00D00

Product Description 

Model: DIYM455HPW00D00

The MRCOOL DIYM455HPW00D00 is a high-capacity, professionally balanced 4-zone ductless mini-split system engineered for homeowners who want serious whole-home comfort, independent zoning, and maximum efficiency—without paying contractor labor costs.

This system is powered by the MRCOOL DIY® 5th Generation 55,000 BTU multi-zone condenser and paired with a carefully designed indoor configuration:

• (3) 6,000 BTU wall-mounted air handlers
• (1) 24,000 BTU wall-mounted air handler

This layout is ideal for multiple bedrooms, offices, nurseries, or guest rooms, paired with a large living area, basement, or open-concept space—allowing precise comfort control room by room.

Thanks to MRCOOL® DIY® QuickConnect® technology, installation is dramatically simplified. The included pre-charged 16-ft QuickConnect® line sets arrive factory-sealed with R-454B refrigerant, eliminating:

• Vacuum pumps
• Refrigerant gauges
• EPA certification
• Licensed HVAC labor

The DIYPRO® communication cable removes the need for electrical conduit, speeding installation and improving long-term durability.

With DC inverter technology, Gold Fin® corrosion-resistant coils, and full MRCOOL® Smart HVAC Controller® App integration, this system delivers quiet operation, lower utility bills, and reliable year-round heating and cooling—all with true DIY convenience.

 KEY FEATURES & PERFORMANCE HIGHLIGHTS

• 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

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

DIMENSIONS & WEIGHT

Outdoor Condenser

• Width: 41.34 in
• Height: 52.48 in
• Depth: 16.34 in
• Weight: ~246 lbs

6K Indoor Air Handlers (each)

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

24K Indoor Air Handler

• Width: 42.52 in
• Height: 13.19 in
• Depth: 9.25 in
• Weight: ~36 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® 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 

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.

Why Buy From MRCOOL DIRECT?

When you order from MRCOOL Direct, you get:

• ✅ Authorized MRCOOL® dealer – Your warranty is protected
• ✅ Factory-fresh units – No refurbished or mystery sources
• ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
• ✅ Financing options – Make high-efficiency comfort more affordable
• ✅ Real product support – Help with sizing, line set selection, and DIY questions
• ✅ No third-party marketplace middlemen – Just genuine MRCOOL® systems from a trusted MRCOOL® dealer.

BUY DIRECT!

Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC
615-553-8118

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