SplitAtlas

Della / Serena Series

Della Serena 9k R-32 208/230V Mini-Split

Certified capacity
9,000 BTU/h[2]
SEER2
22 SEER2[2]
Heating floor
5 F[1]
Voltage
230 V[1]
Install path
Professional install / DIY-marketed

The Serena 9k on 230V is a small, efficient unit that barely tapers in the cold. It rates SEER2 22, EER2 13.5, and HSPF2 9.5, heating 9,300 BTU/h at 47F and holding 8,800 BTU/h at 5F. It suits a small room where steady low-temperature output is wanted on a fixed circuit.

1 zoneProfessional install / DIY-marketedCurrent

Refrigerant generation

R-32 - current-generation refrigerant

Paid link

$680 / Fresh price - checked Jul 24, 2026

Check price at Della

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Error Codes
Della Serena 9,000 BTU R-32 208/230V (048-MS-9K2VR-22S-M-IN / 048-MS-9K2VR-22S-M-OUT) mini-split heat pump indoor wall unit and outdoor condenser

Image: Della

Data completeness: 83%
Last sourced
Jul 24, 2026

SplitAtlas score

8.2 / 10

Methodology
Cooling efficiencyBelow average

(22.0 SEER2) among <=9k systems

Heating efficiencyBelow average

(9.5 HSPF2) among <=9k systems

Cold-weather performanceAbove average

(94.6% heat retained at 5F; 5 F heating floor) among <=9k systems

Installation accessibilityAbove average

(DIY-marketed; 25 ft precharged; 16 ft included line set) across the catalogue

Feature setBottom quartile

(3 verified features) across the catalogue

Price-to-performanceTop 10%

($680 median retail) among <=9k systems

Documentation & partsBelow average

(4 manuals; spec sheet) across the catalogue

Key ratings

Rated cooling

9,000BTU/h[2]

Rated heating

9,300BTU/h[2]

Buyer review snapshot

Best for / skip if

Best for

  • High-efficiency shortlists; SEER2 is 22.

Install difficulty

Professional flared-line install
  • Electrical: 230V; breaker/fuse 15 A.
  • Line set: Flared line connections; precharged 25 ft; included 16 ft.

Alternatives

Availability and price context

  • Verified current price: $679.96 at Della; availability in_stock; checked Jul 24, 2026.

Source date

Model data sourced
Jul 24, 2026
Page reviewed
Jul 24, 2026
Source-backed records
3
Newest source retrieved
Jul 24, 2026

Review methodology

Strengths

  • Holds 8,800 BTU/h at 5F, well above its 7,900 BTU/h at 17F, for strong cold-weather output.
  • EER2 13.5 leads the Serena family on peak cooling efficiency.
  • Low-GWP R-32 refrigerant on a standard 230V circuit.

Weaknesses

  • Not ENERGY STAR certified, unlike the larger Serena units, which limits rebate options.
  • Della's newer value-brand support network is thinner than that of premium legacy names.

Climate suitability

Minimum heating ambient
5 F[1]
Rated heating at 5F
8,800 BTU/h[2]
Rated heating at 17F
7,900 BTU/h[2]
Rated heating at 47F
9,300 BTU/h[2]

Specifications

Show
Manufacturer
Della
Brand
Della
Product line
Serena Series
Model number
048-MS-9K2VR-22S-M-IN indoor / 048-MS-9K2VR-22S-M-OUT outdoor
Indoor unit model
048-MS-9K2VR-22S-M-IN
Outdoor unit model
048-MS-9K2VR-22S-M-OUT
Number of zones
1
Max indoor units
not published
Rated cooling capacity
9,000 BTU/h[2]
Rated heating capacity
9,300 BTU/h[2]
Voltage
230 V[1]
MCA
not published - manufacturer specifies 15 A breaker
Maximum fuse or breaker size
15 A[1]
Breaker needed
15 A[1]
SEER2
22 SEER2[2]
EER2
13.5 EER2[2]
HSPF2 (Region 4)
9.5 HSPF2[2]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
not published
COP at 5F
1.98 COP[2]
Minimum outdoor heating temperature
5 F[1]
Minimum outdoor cooling temperature
not published
Maximum outdoor temperature
125 F[1]
Indoor noise range
not published
Outdoor noise rating
not published
Indoor weight
17.6 lb[1]
Outdoor weight
51.81 lb[1]
Refrigerant
R-32[2]
Refrigerant charge
not published
Manufacturer coverage
not published
Line-set size
1/4 in liquid / 3/8 in suction
Included line-set length
16 ft[1]
Maximum line-set length
not published
Max line set per indoor
not published
Maximum elevation difference
not published
Max height between indoor units
not published
Wi-Fi support
supported[1]
Energy Star status
Not ENERGY STAR certified[3]
AHRI certification number
218154697[2]
Warranty
not published
Install path
Professional install / DIY-marketed
Marketing install label
DIY-marketed
Retail price
$679.96
Available retailers
Della
Manual links
AHRI Appendix M1 public detail record 218154697, DELLA Serena Series 9000 BTU 22 SEER2 Mini-Split Heat Pump AC - Up to 400 Sq.Ft. official product page, Serena Series installation and operation guide, Serena 9,000 BTU Della product-page specifications
Specification sheet
Serena 9,000 BTU Della product-page specifications
Last sourced date
Jul 24, 2026

Retail purchase context

Some retailer links may earn us a commission at no extra cost; paid relationships never change scores or recommendations. Affiliate disclosure

Paid link

Check price at Della

$680 / Fresh price - checked Jul 24, 2026

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
not published
MCA
not published - manufacturer specifies 15 A breaker
Breaker needed
15 A[1]
Maximum breaker size
not published
Maximum fuse size
15 A[1]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
not published

Installation considerations

Show
Liquid line
1/4 in[1]
Suction line
3/8 in[1]
Line connection type
Flared line connections[1]
Precharged length
25 ft[1]
Included line-set length
16 ft[1]
Maximum line-set length
not published
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
30.24 in W x 11.77 in H x 7.87 in D[1]
Outdoor dimensions
27.76 in W x 20.87 in H x 10.98 in D[1]
Indoor weight
17.6 lb[1]
Outdoor weight
51.81 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Della Serena 9,000 BTU R-32 208/230V (048-MS-9K2VR-22S-M-IN / 048-MS-9K2VR-22S-M-OUT) myself, or do I need a pro?
Della Serena 9,000 BTU R-32 208/230V (048-MS-9K2VR-22S-M-IN / 048-MS-9K2VR-22S-M-OUT) is built for professional installation: the line set must be flared, evacuated, and charged, which requires EPA-certified refrigerant handling. Installing it outside the manufacturer's requirements can void the warranty, so budget for a qualified HVAC installer.
Will the Della Serena 9,000 BTU R-32 208/230V (048-MS-9K2VR-22S-M-IN / 048-MS-9K2VR-22S-M-OUT) keep heating in a cold winter?
The manufacturer publishes 8,800 BTU/h of heating output at 5F. Rated heating operation extends down to 5 F. Certified heating efficiency is 9.5 HSPF2. Match those numbers against your climate's design temperature - in cold regions, output at 5F matters far more than the nameplate capacity measured at 47F.
What electrical circuit does the Della Serena 9,000 BTU R-32 208/230V (048-MS-9K2VR-22S-M-IN / 048-MS-9K2VR-22S-M-OUT) need?
Published electrical requirements: 230 V voltage, not published - manufacturer specifies 15 A breaker minimum circuit ampacity, and 15 A maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.

Data sources

Show
  1. Della: DELLA Serena Series 9000 BTU 22 SEER2 Mini-Split Heat Pump AC - Up to 400 Sq.Ft. official product pageSourced - manufacturer technical document

    Covers Breaker needed, Maximum fuse size, Phase, Voltage, Voltage range, Included line-set length and more

  2. AHRI certificate #218154697 - search the AHRI DirectorySourced - AHRI directory

    Covers AHRI certification number, Rated cooling capacity, COP at 5F, EER2, Rated heating capacity, HSPF2 (Region 4) and more

  3. ENERGY STAR: ENERGY STAR exact row check for AHRI 215864147Sourced - Energy Star listing

    Covers Energy Star status

Last updated

Jul 24, 2026