SplitAtlas

Panasonic / Multi-Zone

Panasonic 22k R-32 208/230V 3-Zone Mini-Split

Certified capacity
22,000 BTU/h[4]
SEER2
24.5 SEER2[4]
Heating floor
-15 F[2]
Voltage
230 V[2]
Install path
Professional install

The Panasonic Multi-Zone 3-Zone 22k (CU-3Z22ABUC) puts three heads on one R-32 outdoor unit with strong cold-climate heating. It posts a certified SEER2 24.5, EER2 12.75, and HSPF2 10.7, and is rated at 22,000 BTU cooling.

Its heating rises in deep cold: 25,600 BTU at 17F and 23,000 BTU at 5F, both above its 22,000 BTU 47F rating - genuine deep-cold output. It is ENERGY STAR certified and AHRI cold-climate designated.

Dealer-quoted (lead-gen); professional installation required.

3 zonesProfessional installCurrent

Refrigerant generation

R-32 - current-generation refrigerant

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Error Codes
Panasonic Multi-Zone 3-Zone 22,000 BTU R-32 208/230V (CU-3Z22ABUC)

Image: Panasonic

Data completeness: 92%
Last sourced
Jul 28, 2026

SplitAtlas score

9.3 / 10

Methodology
Cooling efficiencyTop 10%

(24.5 SEER2) among 24k systems

Heating efficiencyAbove average

(10.7 HSPF2) among 24k systems

Cold-weather performanceTop 10%

(100% heat retained at 5F; -15 F heating floor) among 24k systems

Feature setTop quartile

(6 verified features) across the catalogue

Documentation & partsBottom quartile

(7 manuals) across the catalogue

Not evaluated

  • Installation accessibility — not applicable (professional install)N/A

    professional install - DIY-accessibility not applicable

  • Price-to-value — not evaluatedN/A

    This is a professionally installed, quote-only system, so we can't score its price. Get an installed quote to compare real cost.

    Get a quote

Key ratings

Rated cooling

22,000BTU/hNon-Ducted Indoor Units[4]

Rated heating

22,000BTU/hNon-Ducted Indoor Units[4]

Buyer review snapshot

Best for / skip if

Best for

  • 3-zone projects in the 24k outdoor capacity class.
  • High-efficiency shortlists; SEER2 is 24.5.

Install difficulty

Professional flared-line install
  • Electrical: 230V; MCA 25 A; breaker/fuse 30 A.
  • Line set: Flared line connections; precharged 98.4 ft; max 196.9 ft.
  • 3-zone condenser; indoor-head matching and branch layout are part of the job.

Availability and price context

We could not verify a current retail price for this model. We could not find this exact model in stock at a retailer we work with when we last checked on 2026-07-28.

Source date

Model data sourced
Jul 28, 2026
Page reviewed
Jul 28, 2026
Source-backed records
5
Newest source retrieved
Jul 28, 2026

Review methodology

Model context

Install path
This is professional-install equipment; no verified current retail offer is attached.
Structured ratings
Certification: ENERGY STAR certified, ENERGY STAR cold-climate certified and AHRI cold-climate designated. Refrigerant: current low-GWP R-32. Minimum heating ambient: -15 F.

Strengths

  • Heating rises in the cold: 25,600 BTU at 17F and 23,000 BTU at 5F, both above the 47F 22,000 rating.
  • High cooling efficiency at certified SEER2 24.5 / EER2 12.75, on current R-32 refrigerant.
  • HSPF2 10.7 with ENERGY STAR certification.
  • AHRI cold-climate designated; premium Panasonic inverter build.

Weaknesses

  • 22,000 BTU across three zones is modest per room - size each head.
  • Multi-zone part-load penalty when one zone runs alone.

Climate suitability

Minimum heating ambient
-15 F[2]
Rated heating at 5F
23,000 BTU/hNon-Ducted Indoor Units[4]
Rated heating at 17F
25,600 BTU/hNon-Ducted Indoor Units[4]
Rated heating at 47F
22,000 BTU/hNon-Ducted Indoor Units[4]

Specifications

Show
Manufacturer
Panasonic
Brand
Panasonic
Product line
Multi-Zone
Model number
CU-3Z22ABUC
Indoor unit model
Indoor heads are selected separately on a multi-zone system
Outdoor unit model
CU-3Z22ABUC
Number of zones
3
Max indoor units
3 units[3]
Rated cooling capacity
22,000 BTU/hNon-Ducted Indoor Units[4]
Rated heating capacity
22,000 BTU/hNon-Ducted Indoor Units[4]
Voltage
230 V[2]
MCA
25 A[2]
Maximum fuse or breaker size
30 A[2]
Breaker needed
not published
SEER2
24.5 SEER2Non-Ducted Indoor Units[4]
EER2
12.75 EER2Non-Ducted Indoor Units[4]
HSPF2 (Region 4)
10.7 HSPF2Non-Ducted Indoor Units[4]
HSPF2 (Region 5)
Certified per indoor-unit combination, not per outdoor unit
COP
not published
COP at 47F
not published
COP at 5F
2.28 COPNon-Ducted Indoor Units[4]
Minimum outdoor heating temperature
-15 F[2]
Minimum outdoor cooling temperature
14 F[2]
Maximum outdoor temperature
115 F[2]
Indoor noise range
Indoor heads are selected separately on a multi-zone system
Outdoor noise rating
50 dBA[2]
Indoor weight
Indoor heads are selected separately on a multi-zone system
Outdoor weight
137 lb[2]
Refrigerant
R-32[4]
Refrigerant charge
106.6 oz[1]
Manufacturer coverage
not published
Line-set size
1/4 in per indoor-unit port liquid / 3/8 in per indoor-unit port suction
Included line-set length
Indoor heads are selected separately on a multi-zone system
Maximum line-set length
196.9 ft[1]
Max line set per indoor
82 ft[1]
Maximum elevation difference
49.2 ft[1]
Max height between indoor units
49.2 ft[1]
Wi-Fi support
Indoor heads are selected separately on a multi-zone system
Energy Star status
ENERGY STAR certified[5]
AHRI certification number
214837935Non-Ducted Indoor Units[4]
Warranty
not published
Install path
Professional install
Retail price
We could not find this exact model in stock at a retailer we work with when we last checked on 2026-07-28.
Available retailers
not published
Manual links
AHRI public detail 214837935, ENERGY STAR exact row 214837935, Panasonic CU-2Z18ABUC / CU-3Z22ABUC installation instructions, Panasonic Mini-Split Heat Pumps catalog, Panasonic Multi-Zone official product page for CU-3Z22ABUC, CU-3Z22ABUC Panasonic Multi-Zone outdoor submittal, HVACDirect exact-offer audit for CU-3Z22ABUC
Specification sheet
not published
Last sourced date
Jul 28, 2026

Electrical requirements

Show
Voltage
230 V[2]
Voltage range
208/230V[2]
Phase
1[2]
Frequency
60 Hz[2]
MCA
25 A[2]
Breaker needed
not published
Maximum breaker size
30 A[2]
Maximum fuse size
30 A[2]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
Outdoor power supply minimum AWG12; indoor/outdoor connection cable minimum AWG16[1]

Installation considerations

Show
Liquid line
1/4 in per indoor-unit port[1]
Suction line
3/8 in per indoor-unit port[1]
Line connection type
Flared line connections[2]
Precharged length
98.4 ft[1]
Included line-set length
Indoor heads are selected separately on a multi-zone system
Maximum line-set length
196.9 ft[1]
Max line set per indoor
82 ft[1]
Max height between indoor units
49.2 ft[1]
Indoor dimensions
Indoor heads are selected separately on a multi-zone system
Outdoor dimensions
34-15/32 x 12-5/8 x 31-5/16 in[3]
Indoor weight
Indoor heads are selected separately on a multi-zone system
Outdoor weight
137 lb[2]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Panasonic Multi-Zone 3-Zone 22,000 BTU R-32 208/230V (CU-3Z22ABUC) myself, or do I need a pro?
Panasonic Multi-Zone 3-Zone 22,000 BTU R-32 208/230V (CU-3Z22ABUC) 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 Panasonic Multi-Zone 3-Zone 22,000 BTU R-32 208/230V (CU-3Z22ABUC) keep heating in a cold winter?
The manufacturer publishes 23,000 BTU/h of heating output at 5F. Rated heating operation extends down to -15 F. Certified heating efficiency is 10.7 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 Panasonic Multi-Zone 3-Zone 22,000 BTU R-32 208/230V (CU-3Z22ABUC) need?
Published electrical requirements: 230 V voltage, 25 A minimum circuit ampacity, and 30 A maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
How far can the outdoor unit be from the indoor head?
The published maximum line-set length is 196.9 ft, and the included line set comes pre-charged for 98.4 ft. Longer runs than the included set allows typically mean added refrigerant and a pro visit, so measure the planned routing before ordering.

Data sources

Show
  1. Panasonic Corporation of North America: Panasonic CU-2Z18ABUC / CU-3Z22ABUC installation instructionsSourced - secondary source

    Covers brand.dealer_installation_policy, Manufacturer wire notes, Liquid line size, Maximum elevation difference, Maximum line-set length, Precharged length and more

  2. Panasonic Corporation of North America: CU-3Z22ABUC Panasonic Multi-Zone outdoor submittalSourced - manufacturer technical document

    Covers Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase, Voltage and more

  3. Panasonic Corporation of North America: Panasonic Multi-Zone official product page for CU-3Z22ABUCSourced - manufacturer product page

    Covers Outdoor dimensions, Max indoor units, performance_spec.maximum_cooling_btu, performance_spec.maximum_heating_btu_at_47f, product_line.name

  4. Air-Conditioning, Heating, and Refrigeration Institute: AHRI public detail 214837935Sourced - AHRI directory

    Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, COP at 5F, EER2, Rated heating capacity and more

  5. U.S. Environmental Protection Agency ENERGY STAR: ENERGY STAR exact row check for AHRI 214837935Sourced - Energy Star listing

    Covers performance_spec.energy_star_cold_climate, Energy Star status

Last updated

Jul 28, 2026