Which WiFi Channel Frequency Bands Does WiFi Support?

DELLA supports the 2.4 GHz WiFi channel frequency band only.

How Do I Choose the Right Size for Ducted Mini Split AC?

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.

Can I get longer extensions for this installation kit?

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.

What's Della Lifetime Coverage Ceiling Cassette Mini Split AC?

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.

How Do I Clean and Maintain My Mini Split System?

Seasonally clean the reusable filters, inspect the condenser and evaporator units, and keep the area around the outdoor unit clear.

DELLA 20000 BTU Dual Zone Ceiling Cassette Mini Split AC (9K+9K) - Up to 800 Sq.Ft.

SKU: 048-TPH-MODU-1D3-CCH-D99

$3,239.96

Unit price: per

Enjoy 10% OFF orders over $300, 12% OFF orders over $3,000.

Voltage: 230 Volts
Refrigerant: R454B
SEER2: 27
Climate Range: -22°F - 131°F

See full Tech Specs

Choose Your Configuration

Air Handler (9K)

DELLA 20000 BTU Dual Zone Ceiling Cassette Mini Split AC (9K+9K) - Up to 800 Sq.Ft.

Free & fast shipping

30-day money-back guarantee

Free lifetime coverage

Download Remote Control Manual (New Black) (PDF)

AHRI Certificate

Description

The 20,000 BTU dual-zone ceiling cassette mini split combines one outdoor condenser with two indoor units in a 9,000 + 9,000 BTU configuration for coordinated multi-room heating and cooling. The system serves up to 800 sq. ft., and separate room controllers let each indoor unit maintain an independent temperature setting.

Rated at 27 SEER2, the inverter-driven compressor adjusts output for steady performance while supporting up to 40% power savings. The heat pump remains operational in outdoor temperatures as low as -22°F. Each indoor unit delivers 360° airflow for balanced circulation throughout the room. The low-profile ceiling installation keeps floor and wall space open, making the system practical for offices, shops, restaurants, and warehouses. Indoor operation as low as 32 dB supports a quieter environment.

Remote access through the DELLA App and compatible voice assistants keeps system adjustments convenient. Everyday functions include multiple fan speeds, sleep mode, a 24-hour timer, dehumidification, and refrigerant leak detection, providing flexible operation for changing schedules and room requirements.

What's included

Shipping & returns

Lifetime warranty

Not sure if this product is right for you?

Take the quiz

Tech specs

Download User Manual

Indoor Unit Specs

Unit Dimensions (WxDxH):9K：22.44" x 22.44" x 9.65" ； PANEL(9K/12K/18K)：25.59" x 25.59" x 2.36"

Net/Gross Weight:32 / 38.6

Outdoor Unit Specs

Unit Dimensions (WxDxH):38.5" x 16.57" x 31.61"

Net/Gross Weight:119 / 127

System Specs

Voltage:230 Volts

Refrigerant:R454B

SEER2:27

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 -22°F with a stunning SEER2 24-27 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.

Top performance, energy smart design

93% more efficient energy savings

Cleaner air, healthier living

Durable design, lasting comfort

Reliable Comfort in Extreme Cold

Designed to maintain dependable heating performance in severe winter conditions while delivering reliable cooling through intense summer heat.

6 modes for max comfort

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.

Which series is right for me?

Model
Efficiency
HSPF2 Rating (Region IV)
Refrigerant
Climate Range
Energy Rebate
Shop Now

- DELLA 20000 BTU Dual Zone Ceiling Cassette Mini Split AC (9K+9K) - Up to 800 Sq.Ft.
- SEER2 27
- 10
- R454B
- -22°F - 131°F
- DELLA 18000 BTU Dual Zone Concealed Ducted Mini Split Heat Pump AC (9K + 9K)
- SEER2 21.5
- 9
- R454B
- -22°F - 131°F
- Shop Now
- DELLA Optima Pro CloudAir Series 20000 BTU Dual Zone Mini Split AC (9K+9K) - Up to 800 Sq.Ft.
- SEER2 27
- 10
- R454B
- -22°F - 131°F
- Shop Now
- DELLA 17000 BTU Dual Zone Concealed Ducted Mini Split Heat Pump AC (9.5K + 9.5K)
- SEER2 21
- 9.5
- R454B
- -13°F - 131°F
- Shop Now
- DELLA Vita Series 18000 BTU Dual Zone Mini Split AC (9K+9K) - Up to 800 Sq.Ft.
- SEER2 25
- 10
- R32
- -13°F - 131°F
- Shop Now

frequently asked questions.

View our Help Center

Desktop (@1.5x) - 1980px x 410px (1).png__PID:c4f34271-dd71-4ca2-aaa5-262517958d9b

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

Get support