MRCOOL® DIY® 5th Gen Multi-Zone 6-Zone 55,000 BTU 21.5 SEER2 (6K + 6K + 6K + 36K), 4x 25ft line sets, Ductless Mini-Split Heat Pump System – Model DIYM455HPW01D216

Product Description 

Model: DIYM455HPW01D216

The MRCOOL® DIYM455HPW01D216 is a high-capacity, professionally balanced 6-zone ductless mini-split system engineered for homeowners who want maximum comfort, zoning control, and energy savings—without the cost or delays of hiring a licensed HVAC contractor.

This system is powered by the MRCOOL® DIY® 5th Generation 55,000 BTU multi-zone condenser and paired with three 6,000 BTU indoor air handlers and one powerful 36,000 BTU air handler, making it ideal for large homes, workshops, basements, garages, open-concept living areas, and multi-room layouts.

Installation is dramatically simplified thanks to MRCOOL® DIY® QuickConnect® technology. The included 25-foot pre-charged line sets arrive factory-sealed with R-454B refrigerant, eliminating the need for vacuum pumps, gauges, or EPA refrigerant certification. The included DIYPRO® communication cable removes the need for electrical conduit, speeding up installation while improving durability.

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

KEY FEATURES & PERFORMANCE HIGHLIGHTS

• 55,000 BTU total system capacity
• 6 independently controlled comfort zones
• (3) 6,000 BTU + (1) 36,000 BTU wall-mounted air handlers
• 21.5 SEER2 high-efficiency performance
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged R-454B line sets
• Extended 25-ft line-set reach for flexible layouts
• 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

 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: 60 Amps
• Dedicated Circuit Required: Yes

DIMENSIONS & WEIGHT

Outdoor Condenser

• Width: ~41.73 in
• Height: ~52.48 in
• Depth: ~16.34 in
• Weight: ~260 lbs

6K Indoor Air Handlers (each)

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

36K Indoor Air Handler

• Width: ~43.31 in
• Height: ~13.19 in
• Depth: ~9.02 in
• Weight: ~40 lbs

WARRANTY COVERAGE

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

WHAT’S INCLUDED IN THIS COMPLETE BUNDLE 

• ✔ MRCOOL® DIY® 55,000 BTU Multi-Zone Outdoor Condenser
• ✔ (3) 6,000 BTU Wall-Mounted Indoor Air Handlers
• ✔ (1) 36,000 BTU Wall-Mounted Indoor Air Handler
• ✔ (3) 25-ft DIY® QuickConnect® Line Sets (1/4 × 3/8)
• ✔ (1) 25-ft DIY® QuickConnect® Line Set (3/8 × 5/8)
• ✔ DIYPRO® communication cable
• ✔ Wireless remotes for each indoor unit
• ✔ Mounting hardware & installation manuals

 Smartphone not included

FREQUENTLY ASKED QUESTIONS (FAQ) 

Can each room be controlled independently?

Yes. Each indoor unit has its own thermostat and remote.

Is professional HVAC installation required?

No. This system is designed for true DIY installation.

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

They provide greater flexibility for condenser placement and larger layouts.

Does it work with smart home systems?

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

Is this system good for large homes?

Absolutely. The 36K air handler handles large open spaces with ease.

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!

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615-553-8118

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