MRCOOL DIY 5th Gen 55,000 BTU 6-Zone Ceiling Cassette Mini-Split System | DIY-MULTI6-55HP230D-O
The MRCOOL DIY 5th Gen 55,000 BTU 6-Zone Ceiling Cassette Mini-Split is the largest-capacity DIY multi-zone system available. Pair the high-output condenser with your choice of low-profile ceiling cassette air handlers to heat and cool up to six individual zones with whisper-quiet performance, premium efficiency, and true DIY installation.
Mix and match 6K, 9K, 12K, and 18K cassette sizes for bedrooms, living areas, offices, shops, garages, or large open spaces. With up to 22 SEER2 cooling efficiency and HSPF2-4 10.6, this system delivers serious comfort while helping lower utility bills — even in extremes (heats to -13°F, cools to 122°F).
Key Features & Benefits
- ✔ 6 zones from a single 55K condenser for whole-home or multi-room comfort.
- ✔ Compatible with 6K / 9K / 12K / 18K ceiling cassette air handlers (flush-mount, low-profile).
- ✔ Up to 22 SEER2, HSPF2-4 10.6, HSPF2-5 8.5 for excellent efficiency.
- ✔ Quick-Connect® pre-charged line sets: no vacuum pump, no charging required (sold separately).
- ✔ DIYPro® cable included — eliminates electrical conduit for easier installs.
- ✔ Smart control with app, Alexa, and Google Assistant; Energy usage stats & scheduling.
- ✔ Gold Fin® anti-corrosion coating on the condenser for long life.
- ✔ Follow Me® remote tracks temp around you for pinpoint comfort.
- ✔ Energy Star, AHRI, ETL/UL listed for verified performance.
- ✔ Strong warranty: 5-yr parts, 7-yr compressor, and extended Limited Lifetime with MRCOOL® Care enrollment.
Technical Specifications
- Brand / Series: MRCOOL — DIY 5th Gen Multi-Zone Mini-Splits
- Model (Condenser): DIY-MULTI6-55HP230D-O
- Cooling / Heating Capacity: 47,000 BTU / 55,000 BTU
- Zones: Up to 6
- Efficiency: SEER2 22; EER2 12; HSPF2-4 10.6; HSPF2-5 8.5
- Refrigerant: R-454B (151.68 oz)
- Electrical: 208/230V, 1-Phase, 60 Hz; Min. Circuit Ampacity 43A; Max Fuse/Breaker 45A
- Sound Rating: 64 dBA
- Line Set Compatibility: 25 ft standard; max combined length 221.4 ft
- Line Sizes: Liquid 1/4"; Suction: (3/8" × 4) and (1/2" × 2)
- Inverter Compressor: DC Rotary
- Operating Range: Heat to −13°F; Cool to 122°F
- Certifications: Energy Star, AHRI, ETL/UL, Intertek Listed 5031495
- Smart Control: Wi-Fi, App, Alexa, Google Assistant (WMK-19)
- Color: White
- Condenser Dimensions (WxHxD): 37.48" × 52.48" × 16.34" (Net)
- Condenser Weight: 245.81 lbs (Net)
- Shipping Dimensions (WxHxD): 43.11" × 58.27" × 19.49" (Gross)
- Shipping Weight: 267.46 lbs (Gross)
- Warranty: 5-yr parts / 7-yr compressor; Extended Limited Lifetime with MRCOOL® Care (registration required)
- SKU / UPC / GTIN: DIY-MULTI6-55HP230D-O / 840255587488 / 840255587488
Note: Quick-Connect® pre-charged line sets and ceiling cassette air handlers are sold separately to build your ideal 6-zone package.
Shipping Policy
Free Standard Shipping
We offer free standard shipping on all orders. Orders are processed within 1–2 business days and typically arrive within 5–7 business days.
Expedited Shipping
Expedited shipping options are available at checkout. Expedited orders placed before 12pm EST ship the same business day.
Order Tracking
Once your order ships you will receive a confirmation email with a tracking number. You can track your shipment at any time through our website or the carrier's portal.
International Shipping
We currently ship within the United States only. International shipping is not available at this time.
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
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