What kind of refrigerant does this unit use?

This unit uses R32 refrigerant. This unit comes pre-charged with R32 refrigerant for up to 24.5 feet of lineset. If your installation does not exceed this length, no additional refrigerant is needed.

Can I get longer extensions for this installation kit?

Yes, you can purchase a longer lineset separately. If you buy it together with the Single Zone Mini split system, you’ll receive a 10% bundle discount. 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.

When the unit is in auto mode, what will the room's temperature be maintained at?

When auto mode is turned on, the ac will start the unit's cooling mode to begin cooling until the target temp is met. After that, the unit will switch to dry mode for a short time. The final step switches to the fan-only mode that saves energy.

Do the condenser lines come pre-vacuumed or do they have to be vacuumed?

The mini split condenser and lines are not pre-vacuumed. You will need to vacuum the system during installation to remove air and moisture before releasing the refrigerant—this is essential for proper operation and longevity. You can use our Rental Kit Service, which includes all the necessary tools for vacuuming and installing your mini split.

DELLA Serena CloudAir Series 12000 BTU 22 SEER2 Mini Split Heat Pump AC - Up to 550 Sq.Ft.

SKU: 12K1VR-22S-MX-I+O

$799.96

Unit price: per

Cooling Capacity: 12000
Heating Capacity: 12300
SEER2: 22
Fitting Area: 550
Voltage: 115V / 208-230V
Refrigerant Type: R-32
Maximum Fuse Size: 25A / 15A
Copper Line Length: 16.4ft
Copper Line Size: 3/8 inch and 1/4 inch
Climate Range: 5°F - 125°F

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Voltage

DELLA Serena CloudAir Series 12000 BTU 22 SEER2 Mini Split Heat Pump AC - Up to 550 Sq.Ft.

Voltage: 115V

Free & fast shipping

30-day money-back guarantee

Free lifetime coverage

AHRI Certificate

Description

The Serena CloudAir Series 12000 BTU Mini Split Air Conditioner is designed for rooms that need a little more coverage while still feeling quiet and comfortable day to day. Made for spaces up to 550 sq. ft., it delivers efficient cooling, dependable heating, and a softer airflow experience that feels easier to live with over longer periods of use.Its indirect airflow design helps reduce the harsh sensation of air blowing straight at you, which makes it a good choice for bedrooms, home offices, living areas, and other spaces where a calmer indoor feel matters. Built-in WiFi makes temperature control easy through the DELLA app, and it also works with Alexa and Google Home for added convenience. Features like 4D airflow, sleep mode, dry mode, turbo mode, I Feel mode, timer, and multiple fan speeds give you flexible control based on the room and the season. A built-in base pan heater supports reliable performance in temperatures as low as 5°F, while PureClean technology helps reduce dust buildup for a cleaner indoor environment.

What’s included

1. Indoor Unit
2. Outdoor Unit
3. Refrigerant Pipe
4. Drain Lines
5. Remote Control
6. Wall cap
7. Plastic Wrap
8. Mounting Plate
9. 2 AAA Batteries
10. Plasticine Putty
11. Communication Cable
12. Bracket Template

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Tech specs

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Indoor Unit Specs

Unit Dimensions (WxDxH):32.56" x 7.87" x 11.77"

Net/Gross Weight:18.3 / 25.4

Outdoor Unit Specs

Unit Dimensions (WxDxH):27.76" x 10.98" x 20.87"

Net/Gross Weight:52.9 / 63.93

System Specs

Cooling Capacity:12000

Heating Capacity:12300

SEER2:22

Fitting Area:550

Voltage:115V / 208-230V

Refrigerant Type:R-32

Maximum Fuse Size:25A / 15A

Copper Line Length:16.4ft

Copper Line Size:3/8 inch and 1/4 inch

Climate Range:5°F - 125°F

DELLA Wall Mounted Mini Split AC Split View

No.1 Selling Mini Split Brand on Amazon

Serena CloudAir: Peak Efficiency. Pure Serenity.

Why choose between performance and savings when you can have both? The Serena Series sets a new standard with an extraordinary SEER2 22 rating, ensuring your home stays perfectly comfortable while your energy bills stay remarkably low.

Engineered with eco-friendly R32 refrigerant and reliable heating down to 5°F, Serena is the premium choice for the energy-conscious homeowner. It’s whisper-quiet, incredibly efficient, and designed to pay for itself in savings.

Top performance, energy smart design

57% more efficient energy savings

Cleaner air, healthier living

Durable design, lasting comfort

Reliable Comfort Through the Seasons

Designed for dependable heating and cooling as outdoor temperatures change, helping keep your home comfortable through summer heat and winter weather.

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
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- SEER2 22
- 9.5
- R32
- 5°F - 125°F
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- 10.5
- R454B
- -22°F - 131°F
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- SEER2 23
- 9.5
- R454B
- -4°F - 122°F
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- DELLA Umbra Series 12000 BTU 19 SEER2 Mini Split Heat Pump AC - Up to 550 Sq.Ft.
- SEER2 19
- 8.5
- R32
- 5°F - 118°F
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Customer Reviews

Overall rating: 5.0 / 5 from 3 reviews.

Customer photo review of DELLA Serena CloudAir Series 12000 BTU 22 SEER2 Mini Split Heat Pump AC - Up to 550 Sq.Ft.

This was my first time installing a ductless mini split, and I have to say—I was seriously impressed with how easy it was! I used the installation kit from Della, and the entire install only took me about 2 hours. I went with the 12,000 BTU 110V model, and it has been awesome. It keeps the room nice and cool even on hot days, but what really surprised us was the heat function. My wife absolutely loves it! If you’ve been shopping around, comparing brands, reading reviews, and trying to decide which mini split to buy, stop overthinking it. You could already have this thing installed and be enjoying it! Hands down one of the best purchases I’ve made in a long time. Highly recommend!

Kelly R. 5/5 Verified September 9, 2026