DELLA 55000 BTU Five Zone Ceiling Cassette Mini Split AC (12K+12K+12K+12K+12K) - Up to 2750 Sq.Ft.
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- Voltage: 230 Volts
- Refrigerant: R454B
- SEER2: 22.5
- Climate Range: -22°F - 131°F
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30-day money-back guarantee
Free lifetime coverage
The 55,000 BTU five-zone ceiling cassette mini split is designed for uniform multi-room climate control with a 12,000 + 12,000 + 12,000 + 12,000 + 12,000 BTU configuration, providing consistent performance across evenly sized spaces. This 5-zone system supports up to 2,750 sq. ft., allowing each zone to maintain independent temperature settings for precise and personalized comfort throughout the entire property. With a 22.5 SEER2 efficiency rating and inverter-driven compressor technology, it reduces energy consumption by up to 40% while delivering stable cooling and heating performance year-round. The heat pump system ensures reliable operation even in extremely low temperatures as low as -22°F, maintaining steady indoor comfort in all seasons. Ceiling cassette design delivers 360° airflow distribution to improve air circulation while maintaining a clean, low-profile ceiling installation suitable for residential and commercial environments. Each indoor unit operates independently to support flexible zoning based on room usage needs. Built-in smart controls include multiple fan speeds, sleep mode, energy-saving mode, 24-hour timer, dry function, refrigerant leak detection, WiFi app control, and voice assistant compatibility.
1. Outdoor Unit
2. Indoor Unit
3. Refrigerant Pipe (10ft / 16ft / 25ft / 33ft/ 50ft models only)
4. Drain Hose
5. Hose Clamp
6. Cable Clamp
7. Flexible Drain Hose
8. Copper Nut
9. Phillips Pan Head Bolt
10. Battery
11. Rubber Feet
12. Zip Tie
13. Communication Cable
14. Bracket Templat
15. Remote Control
16. Insulation Foam
17. Wall Sleeve
18. Cover Cap
19. Plastic Wrap
20. Plasticine Putty
Shipping Policy
How Long Will It Take for My Order to Ship?
It normally takes us 1 business day to arrange the shipment. During peak seasons, it will take 2-4 business days to arrange the shipment. We provide free ground shipping, so there are no additional charges for shipping and handling.
How Do I Track My Order?
Log into YOUR ACCOUNT, and you may see each individual order that you’ve placed with us. Select one that you want and you’ll be provided with all the details you need about the order.
Once your order is on the way you will receive a notification email.
What Should I Do If I Haven’t Received My Order?
Please contact us immediately.
For the full shipping policy, click here to view our shipping policy.
Return
We offer return guarantees to ensure your satisfaction with every DELLA purchase.
DELLA provides comprehensive assistance for all orders within 30 days of purchase. If you're not satisfied with your product within 30 days of purchase from dellahome.com, you can return the product for a full refund.Products must be returned in their original operating condition, including all accessories and packaging.The customer is responsible for return shipping costs.
If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts free of charge. DELLA will also cover all shipping expenses for the delivery of replacement parts.
Need to Start a Return?
To initiate a return, call us at (800) 863-4143 or contact our live chat team.
For full return terms, click here to view our return policy.
Standard Warranty (1 Year): Products are covered by a 1-year limited warranty from the date of purchase.
Extended Warranty Program: Customers who register their mini split unit within 100 days of purchase will receive complimentary lifetime parts coverage.
Registered Product and Non-professional Install: If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts free of charge. The customer is responsible for all shipping costs.
Registered Product and Professional Install: If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts free of charge. If, after parts are replaced, the customer¡¯s unit is still malfunctioning and the customer has a licensed HVAC tech's defective report, Della will take care of the customer at its discretion. In any event, the customer is responsible for all shipping costs.
Unregistered Product: If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts. The customer is responsible for the costs of all parts and shipping.
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Tech specs
Indoor Unit Specs
Unit Dimensions (WxDxH):22.44" x 22.44" x 9.65"
Net/Gross Weight:32 / 38.6
Outdoor Unit Specs
Unit Dimensions (WxDxH):40.71" x 16.1" x 52.68"
Net/Gross Weight:249.1 / 275.6
System Specs
Voltage:230 Volts
Refrigerant:R454B
SEER2:22.5
Climate Range:-22°F - 131°F
No.1 Selling Mini Split Brand on Amazon
Ceiling Cassette: 360° Comfort, Zero Dead Zones.
Elevate your business environment with the Ceiling Cassette series—a powerhouse designed for maximum coverage and elite efficiency. Leveraging the same high-performance DNA as our Optima series, it delivers reliable Hyper Heat down to -13°F with a stunning SEER2 22-24 rating.
Its signature 360-degree airflow ensures consistent temperature distribution throughout any room, eliminating cold spots. With built-in fresh air intake support, it’s the ultimate professional solution for maintaining a healthy, comfortable, and energy-efficient atmosphere in any commercial or large-scale residential space.
Powered by MightAir X
Top performance, energy smart design
61% more efficient energy savings
Cleaner air, healthier living
Durable design, lasting comfort
6 modes for max comfort
Auto mode
Maintain a comfortable indoor temperature by automatically switching between heating and cooling as needed
Auto mode
Maintain a comfortable indoor temperature by automatically switching between heating and cooling as needed

Wherever you are
Control your comfort, your way
Set schedules and timers through the Della+ app to match your daily routine.
Take control your way through the app, remote, or voice. Award-winning remote design makes every interaction seamless.
Your comfort adjusts automatically as you come and go.
Get help anytime with live chat or call, directly in the app.
Control your AC hands-free with Alexa.
frequently asked questions.
DELLA supports the 2.4 GHz WiFi channel frequency band only.
The size of the Ceiling Cassette mini split AC depends on the room's dimensions and specific needs. For example:
• A 400-square-foot room typically requires a 9000 BTU Ceiling Cassette Mini Split AC.
• A 550-square-foot room needs 12000 BTUs.
• A 1000-square-foot room needs 16000 BTUs.
• A 1500-square-foot room needs 23000 BTUs.
Yes, you can purchase a longer lineset separately. Please note, if the extended lineset is longer than 25 feet, additional refrigerant will be required. Make sure to consult a professional HVAC technician for proper installation.
Register within 100 days for lifetime parts coverage. HVAC-licensed installs receive enhanced lifetime parts, while non-licensed installs receive limited lifetime parts. Note: Coverage is for parts only; labor costs are not included.
Seasonally clean the reusable filters, inspect the condenser and evaporator units, and keep the area around the outdoor unit clear.

Talk to an HVAC expert
Not sure which system is right for your home? Our experts can help with sizing, installation, and product selection.
Technical support: Mon - Fri, 8 AM - 3 PM (PST)
24/7 live chat for general question
Customer Reviews
Shop accessories
DELLA Mini Split Line Set
- Material: Copper
- Color: White
- Nominal Wall Thickness: 0.375 inches
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Rebate available
Starting at $89.96
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DELLA Rental Install Kit
- Pump Type: Rotary Vane
- Motor Power: 1/3 hp (248W)
- Flow Rate: 4.5 cfm (7.6 m³/h)
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Rebate available
Starting at $300.00
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DELLA Mini Split Line Set Cover
- Material: PVC
- Temperature Tolerance: -40°F to 140°F
- Applicable Sizes: 7000 to 24000 BTU / 7000 to 36000 BTU
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Rebate available
Starting at $44.96
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DELLA Mini Split Line Set Cover with Flexible Duct
- Material: PVC
- Temperature Tolerance: -40°F to 140°F
- Applicable Sizes: 7000 to 24000 BTU / 7000 to 36000 BTU
-
Rebate available
Starting at $48.96
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DELLA Wall Mounting Bracket for 6000-12000 BTU Single Zone Mini Split
- Material: Heavy-duty galvanized steel construction
- Dimensions: 17.72 L x 15.35 H
- Compatibility: 6000 to 12000 BTU ductless mini-splits
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Rebate available
$39.96
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DELLA Wall Mounting Bracket for 6000-36000 BTU Single Zone Mini Split
- Material: Heavy-duty galvanized steel construction
- Compatibility: 6000 to 36000 BTU ductless mini-splits
- Weight Capacity: Supports up to 485 lbs
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Rebate available
$59.96
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DELLA Ground Stand Bracket for 9000-18000 BTU Mini Split
- Material: Heavy-duty steel
- Compatibility: 9000 to 18000 BTU mini split units
- Weight Capacity: Supports up to 396 lbs
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Rebate available
$79.96
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DELLA Ground Stand Bracket for 9000-45000 BTU Mini Split
- Material: Heavy-duty steel
- Compatibility: 9000 to 45000 BTU mini split units
- Weight Capacity: Supports up to 440lbs
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Rebate available
$99.96
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