MRCOOL® DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 21.5 SEER2 (6K + 6K + 6K + 36K), 4x 16ft line sets, Ductless Mini-Split Heat Pump System – Model DIYM455HPW01D00

Product Description 

Model: DIYM455HPW01D00

The MRCOOL® DIYM455HPW01D00 is a high-capacity, professionally balanced multi-zone ductless mini-split system engineered for homeowners who need serious cooling and heating power across large spaces, while still maintaining true DIY installation freedom.

This system is built around the MRCOOL® DIY® 5th Generation 55,000 BTU multi-zone condenser, paired with three 6,000 BTU wall-mounted air handlers and a powerful 36,000 BTU wall-mounted air handler. This layout is ideal for homes that include multiple bedrooms or offices plus a large open living area, great room, basement, or shop space.

Thanks to MRCOOL® DIY® QuickConnect® technology, installation does not require vacuum pumps, refrigerant gauges, or licensed HVAC labor. The included pre-charged R-454B line sets arrive factory-sealed, eliminating the most expensive and time-consuming steps of traditional installation. The DIYPRO® communication cable removes the need for conduit, improving durability while simplifying routing.

With DC inverter technology, Gold Fin® corrosion protection, and full MRCOOL® Smart HVAC Controller® App integration, this system delivers quiet operation, lower energy bills, precise zoning control, and long-term reliability — all without professional install delays.

KEY FEATURES & PERFORMANCE HIGHLIGHTS 

• 55,000 BTU total system capacity
• 4 independently controlled comfort zones
• (3) 6,000 BTU + (1) 36,000 BTU indoor air handlers
• Up to 21.5 SEER2 energy efficiency
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged line sets
• DIYPRO® communication cable (no conduit required)
• R-454B low-GWP refrigerant
• Gold Fin® anti-corrosion coating
• Follow Me® temperature sensing
• Smart HVAC Controller® App
• Alexa® & Google Home® compatible
• ENERGY STAR® & AHRI certified

ELECTRICAL REQUIREMENTS & BREAKER INFO

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: 37.48 in
• Height: 52.48 in
• Depth: 16.34 in
• Net Weight: ~230 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: 42.52 in
• Height: 13.19 in
• Depth: 9.25 in
• Weight: ~45 lbs

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) 36,000 BTU Wall-Mounted Indoor Air Handler
• ✔ (3) 16-ft DIY® QuickConnect® Line Sets (1/4 × 3/8)
• ✔ (1) 16-ft DIY® QuickConnect® Line Set (3/8 × 5/8)
• ✔ DIYPRO® communication cable
• ✔ Wireless remotes for each indoor unit
• ✔ Mounting hardware & installation manuals

Smartphone not included.

WARRANTY COVERAGE

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

FREQUENTLY ASKED QUESTIONS (FAQ)

Can the large 36K unit run independently from the smaller rooms?

Yes. Each zone operates independently with its own thermostat control.

Is professional HVAC installation required?

No. This system is designed for true DIY installation.

Is this system good for large open areas?

Absolutely. The 36K air handler is ideal for great rooms, basements, or large living spaces.

Does it support smart home controls?

Yes. Compatible 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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