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MRCOOL®

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MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K + 12K + 12K) Ductless Mini Split Heat Pump & Air Conditioner with Ceiling Cassette Units

50 in stock

$12,436.00 $15,420.64 You save $2,984.64
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MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner & Heat Pump with Ceiling Cassettes

Experience total home comfort with the MRCOOL DIY 5th Gen 55,000 BTU 6-Zone Ductless Mini-Split System — the ultimate DIY climate solution for large homes, shops, and offices. This complete setup pairs a powerful 55K BTU condenser with six low-profile ceiling cassette air handlers (9K + 9K + 12K + 12K + 12K + 12K), delivering efficient zoned heating and cooling with no professional installation required.

With Quick-Connect® pre-charged line sets, advanced Wi-Fi control, and an industry-leading 22 SEER2 efficiency rating, this MRCOOL system offers premium performance, whisper-quiet operation, and smart home integration through Alexa or Google Assistant.

Key Features & Benefits

  • ✔ 6-Zone configuration: (9K + 9K + 12K + 12K + 12K + 12K) ceiling cassette air handlers.
  • ✔ 22 SEER2 / 10.6 HSPF2-4 energy efficiency for reduced power costs.
  • ✔ Heats to −13°F and cools to 122°F for true four-season comfort.
  • ✔ Quick-Connect® pre-charged R-454B line sets — no vacuuming or refrigerant handling required.
  • ✔ Ceiling cassette design blends seamlessly into ceilings for a low-profile look.
  • ✔ Wi-Fi, Alexa, and Google Assistant control via MRCOOL SmartHVAC App.
  • ✔ DIYPro® cable included — eliminates electrical conduit needs for faster installation.
  • ✔ Gold Fin® anti-corrosion coating protects against outdoor elements.
  • ✔ Follow Me® remote sensor maintains the perfect temperature near you.
  • ✔ Energy Star, AHRI, and ETL Certified — proven efficiency and safety.
💡 Pro Tip: Each MRCOOL DIY ceiling cassette includes the WMK-19 Smart HVAC Wi-Fi Controller. Simply plug it into the air handler for instant app access via MRCOOL or SmartHVAC. Schedule temperature changes, monitor performance, and control your system hands-free with Alexa or Google Assistant.

Technical Specifications

  • Brand / Series: MRCOOL DIY 5th Gen Multi-Zone Mini-Split
  • Outdoor Model: DIY-MULTI6-55HP230D-O
  • Indoor Models: Ceiling Cassettes (9K + 9K + 12K + 12K + 12K + 12K)
  • Total Capacity: 55,000 BTU Heating / 47,000 BTU Cooling
  • Zones: 6
  • Refrigerant: R-454B (Pre-Charged Quick-Connect)
  • Efficiency: SEER2 22 | EER2 12 | HSPF2-4 10.6 | HSPF2-5 8.5
  • Voltage: 208/230V, 1 Phase, 60 Hz
  • Operating Range: Heat down to −13°F | Cool up to 122°F
  • Sound Level: 64 dBA (Outdoor Unit)
  • Compressor: DC Inverter Rotary
  • Max Line Set Length: 221.4 ft total combined
  • Certifications: Energy Star, AHRI, ETL, UL, Intertek 5031495
  • Warranty: 5-Year Parts | 7-Year Compressor | Limited Lifetime with MRCOOL Care registration
Buy from this retailer — the USA’s trusted source for genuine MRCOOL systems.
Get fast nationwide delivery, factory-backed warranty, and friendly DIY support from HVAC experts.

 

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We offer free standard shipping on all orders. Orders are processed within 1–2 business days and typically arrive within 5–7 business days.

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Expedited shipping options are available at checkout. Expedited orders placed before 12pm EST ship the same business day.

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International Shipping

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Return Policy

30-Day Returns

We accept returns within 30 days of delivery. Items must be unused, in their original packaging, and in the same condition as received.

How to Initiate a Return

Contact our support team at sales@homecrucial.com with your order number and reason for return. We will provide a prepaid return label within 1–2 business days.

Refunds

Refunds are processed within 5–7 business days after we receive the returned item. The refund will be issued to your original payment method.

Non-Returnable Items

Items that have been installed, used, or damaged after delivery are not eligible for return.

Warranty

Manufacturer's Warranty

All products sold at Home Crucial are covered by the manufacturer's warranty. Warranty terms vary by brand and product — please refer to the documentation included with your product for specific details.

What Is Covered

Manufacturer warranties typically cover defects in materials and workmanship under normal use and conditions. Coverage does not include damage caused by misuse, improper installation, or normal wear and tear.

Warranty Claims

To initiate a warranty claim, contact us at sales@homecrucial.com with your order number, a description of the issue, and photos if applicable. We will coordinate with the manufacturer on your behalf.

Extended Protection

Extended warranty and protection plans may be available for select products. Contact us for more details.

Customer Reviews

★★★★★  4.9 out of 5  ·  20 reviews

High-efficiency 5th Gen ENERGY STAR® rated DIY mini split heat pumps.

  • Outdoor esthetics do matter.

  • Create your bundle with ease.

  • Authorized Dealer of Mr Cool™.