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#line set_none
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
#line set_none
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
#line set_none
#line set_none
#line set_none
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
#line set_none
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.
DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.

DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.

SKU: CC-18K2V-20S-I+O-X
$1,784.96
  • Cooling Capacity: 18000
  • Heating Capacity: 18000
  • SEER2: 20.5
  • Fitting Area: 1000
  • Voltage: 208-230
  • Refrigerant Type: R454B
  • Maximum Fuse Size: 20A
  • Copper Line Length: None / 10ft / 16ft / 25ft / 33ft / 50ft
  • Climate Range: -13°F - 131°F
See full Tech Specs

Customize your setup

What size should I get?

  • The correct line set size depends on your mini split system. Always refer to the manufacturer’s specifications to ensure compatibility.
  • Measure the distance between your indoor and outdoor units
  • When in doubt, choose a longer line set. Most systems require a minimum length of 15 feet to function correctly, while exceeding the manufacturer’s maximum limit can cause performance issues.

For more information, check out our complete guide to line sets for mini splits

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30-day money-back guarantee

Free lifetime coverage

Download Remote Control (New Black) Manual (PDF)
AHRI Certificate
Achieve maximum climate control power with a minimalist aesthetic using the DELLA ceiling cassette air conditioner. This 18,000 BTU system installs flush with your ceiling, providing a discreet yet powerful solution for rooms up to 1000 sq. ft. The high-efficiency 20.5 SEER2 heat pump delivers year-round comfort in temperatures as low as -13°F, while operating at a quiet 37 dBa. Enjoy seamless smart home integration with voice assistants and the Della+ app, complete with energy-saving geo-location features.
#line set_10ft

1. Outdoor Unit
2. Refrigerant Pipe (10ft / 16ft / 25ft / 33ft/ 50ft models only)
3. Drain Hose
4. Insulation Foam
5. Wall Sleeve
6. Cover Cap
7. Plastic Wrap
8. Plasticine Putty
9. Indoor Unit
10. Flexible Drain Hose
11.Zip Tie
12. Rubber Feet
13. Hose Clamp
14. Phillips Pan Head Bolt
15. Cable Clamp
16. Communication Cable
17. Remote Control
18. Battery
19. Copper Nut
20. Bracket Template

Tech specs

Download User Manual

Indoor Unit Specs

Unit Dimensions (WxDxH):22.50" x 22.50" x 9.63"

Net/Gross Weight:32 / 38.6

Outdoor Unit Specs

Unit Dimensions (WxDxH):36.50" x 14.94" x 27.50"

Net/Gross Weight:90.4 / 105.8

System Specs

Cooling Capacity:18000

Heating Capacity:18000

SEER2:20.5

Fitting Area:1000

Voltage:208-230

Refrigerant Type:R454B

Maximum Fuse Size:20A

Copper Line Length:None \/ 10ft \/ 16ft \/ 25ft \/ 33ft \/ 50ft

Climate Range:-13°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 22-23 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

47% 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

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?

  • Efficiency
  • HSPF2 Rating (Region IV)
  • Refrigerant
  • Climate Range
  • Energy Rebate

    • DELLA 18,000 BTU 20.5 SEER2 Ceiling Cassette Ductless Mini Split AC - Up to 1000 Sq.Ft.

    • SEER2 20.5
    • 8.5
    • R454B
    • -13°F - 131°F

    • DELLA 17000 BTU 20.3 SEER2 Concealed Ducted Mini Split Air Conditioner

    • SEER2 20.3
    • 10
    • R454B
    • -13°F - 131°F
    • Shop Now

    • DELLA 18000 BTU 20.5 SEER2 Floor Mounted Mini Split AC - Up to 1000 Sq. Ft.

    • SEER2 20.5
    • 9.5
    • R454B
    • -13°F - 131°F
    • Shop Now

    • DELLA Vario Series 18000 BTU 21 SEER2 Mini Split Heat Pump AC - Up to 1000 Sq.Ft.

    • SEER2 21
    • 9.5
    • R454B
    • -4°F - 122°F
    • Shop Now

    • DELLA Optima Series 18000 BTU 23 SEER2 Ultra Heat Mini Split AC - Up to 1000 Sq.Ft.

    • SEER2 23
    • 10
    • R454B
    • -13°F - 131°F
    • Shop Now

Frequently asked questions

View our Help Center

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

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Customer Reviews

Shop accessories

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DELLA Mini Split Line Set
#size_10ft line set 1/2" and 1/4"

DELLA Mini Split Line Set

  • Material: Copper
  • Color: White
  • Nominal Wall Thickness: 0.375 inches

Starting at $89.96

#size_3" 7.5 ft line set cover
#Size_3" 7.5 Ft Line Set Cover

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

Starting at $44.96

#size_3" 9 ft line set cover with flexible duct
#Size_3" 9 Ft Line Set Cover with Flexible Duct

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

Starting at $48.96

DELLA Wall Mounting Bracket for 6000-12000 BTU Mini Split

DELLA Wall Mounting Bracket for 6000-12000 BTU Mini Split

  • Material: Heavy-duty galvanized steel construction
  • Dimensions: 17.72 L x 15.35 H
  • Compatibility: 6000 to 12000 BTU ductless mini-splits

$39.96

DELLA Wall Mounting Bracket for 6000-36000 BTU Mini Split

DELLA Wall Mounting Bracket for 6000-36000 BTU Mini Split

  • Material: Heavy-duty galvanized steel construction
  • Compatibility: 6000 to 36000 BTU ductless mini-splits
  • Weight Capacity: Supports up to 485 lbs

$59.96

DELLA Ground Stand Bracket for 9000-18000 BTU Mini Split

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

$79.96

DELLA Ground Stand Bracket for 9000-45000 BTU Mini Split

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

$99.96

#Amperage Capacity_30 Amps

DELLA 30A & 60A Pull-Out Switch AC Disconnect Boxes

  • Amperage Capacity: 30A/60A
  • Voltage: 120V240V
  • Protection Rating: IP66

Starting at $35.50

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