SplitAtlas

GREE / Vireo R32

GREE Vireo 9k One-Way Cassette R-32 208/230V Mini-Split

Certified capacity
9,100 BTU/h[2]
SEER2
22 SEER2[2]
Heating floor
-22 F[1]
Voltage
230 V[1]
Install path
Professional install

The one-way cassette is the answer to a problem the four-way version cannot solve: a room that is long and narrow, or a ceiling cavity that will not take a big square head. The OWC09 throws in a single direction, so it sits neatly along a wall line or at the end of a corridor and pushes air down the length of the space.

On a Vireo condenser it certifies at 22 SEER2 with 9.5 HSPF2 - notably a better heating figure than the four-way version of the same capacity, though a lower cooling one. Rated to -22F. No current price is shown for this exact pairing, so treat it as a quote item.

1 zoneProfessional installCurrent

Refrigerant generation

R-32 - current-generation refrigerant

This system's warranty depends on licensed installation — get quotes from installers in your area.

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Error Codes
GREE one-way ceiling cassette indoor unit for R32 mini-split systems.

Image: GREE Comfort official All-Match One-Way Cassette R32 product page

Data completeness: 100%
Last sourced
Aug 2, 2026

SplitAtlas score

7.8 / 10

Methodology
Cooling efficiencyBelow average

(22.0 SEER2) among <=9k systems

Heating efficiencyBelow average

(9.5 HSPF2) among <=9k systems

Cold-weather performanceAbove average

(5F certified capacity: 89.5% of the 47F rating; -22 F heating floor) among <=9k systems

NoiseBottom quartile

(28 dBA indoor min / 52 dBA outdoor) among <=9k systems

WarrantyBelow average

(5 yr parts / 7 yr compressor) across the catalogue

Feature setBelow average

(5 verified features) across the catalogue

Documentation & partsBelow average

(6 manuals; spec sheet) 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

9,100BTU/h[2]

Rated heating

10,500BTU/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; MCA 10 A; breaker/fuse 15 A.
  • Line set: Flared line connections; precharged 25 ft; max 66 ft.

Alternatives

Availability and price context

This system needs a professional install, and its warranty depends on who installs it. Its real price is an installed quote that depends on your home, so get installation quotes to price it.

Purchase channel policy

GREE publishes an online/retail warranty-claim path for equipment purchased online, Home Depot, or Lowes rather than treating online purchase as a warranty voidance.

Warranty impact
Online purchase changes the claim path: routine parts use GREE's online claim form, while compressor failures and refrigerant leaks require tech-support confirmation before the online claim.
Installation condition
Warranty claims for online/retail purchases must be completed by a contractor after an on-site diagnosis, with required documentation such as purchase receipt or installation invoice and data-plate photos.
Authorized channel
GREE distributor path for distributor purchases; GREE online warranty claim form for equipment purchased online, Home Depot, or Lowes; GREE offers a 10-year extended warranty through GREE Select dealers, with registration.

GREE online purchases have a manufacturer-published warranty path, but buyers should keep purchase and installation documents and use a licensed HVAC contractor for diagnosis and claims.

Compare online-purchase warranty rules by brand

Source: GREE Comfort: How Does the GREE Warranty Work? Coverage, Claims, and 10-Year Extension Guide; retrieved Aug 15, 2026.

Source date

Model data sourced
Aug 2, 2026
Page reviewed
Aug 2, 2026
Source-backed records
4
Newest source retrieved
Aug 2, 2026

Warranty tiers

Base
5 yr parts / 7 yr compressor - eligible residential system

The score uses Base. Additional published terms are shown for reference and not counted in the score.

Review methodology

Strengths

  • 9.5 HSPF2 - the strongest heating efficiency in the 9k Vireo cassette range.
  • Single-direction throw suits narrow rooms and hallways that defeat a four-way head.
  • Slimmer housing than the four-way, so it fits shallower ceiling cavities.

Weaknesses

  • 22 SEER2 in cooling, behind the 24 of the four-way head.
  • Pricing has to come through a contractor.
  • Directional airflow means placement is much less forgiving - get it wrong and one end of the room stays warm.

Climate suitability

Minimum heating ambient
-22 F[1]
Certified heating at 5F
9,400 BTU/h[2]
Rated heating at 17F
8,800 BTU/h[2]
Rated heating at 47F
10,500 BTU/h[2]

Specifications

Show
Manufacturer
GREE
Brand
GREE
Product line
Vireo R32
Model number
OWC09HP230V1R32AH indoor / VIR09HP230V1R32AO outdoor
Indoor unit model
OWC09HP230V1R32AH
Outdoor unit model
VIR09HP230V1R32AO
Number of zones
1
Max indoor units
not published
Rated cooling capacity
9,100 BTU/h[2]
Rated heating capacity
10,500 BTU/h[2]
Voltage
230 V[1]
MCA
10 A[1]
Maximum fuse or breaker size
15 A[1]
Breaker needed
not published
SEER2
22 SEER2[2]
EER2
13.1 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
not published
Minimum outdoor heating temperature
-22 F[1]
Minimum outdoor cooling temperature
-20 F[1]
Maximum outdoor temperature
122 F[1]
Indoor noise range
28-37 dB(A)[1]
Outdoor noise rating
52 dBA[1]
Indoor weight
43 lb[1]
Outdoor weight
70.6 lb[1]
Refrigerant
R-32[2]
Refrigerant charge
30 oz[1]
Manufacturer coverage
not published
Line-set size
1/4 in liquid / 3/8 in suction
Included line-set length
GREE professional single-zone cassette and ducted systems publish field-supplied flared line sizes and maximum/precharged piping data; no included consumer line set length is published.
Maximum line-set length
66 ft[1]
Max line set per indoor
not published
Maximum elevation difference
40 ft[1]
Max height between indoor units
not published
Wi-Fi support
not supported[1]
Energy Star status
ENERGY STAR certified[2]
AHRI certification number
215413814[2]
Warranty
Base: 5 yr parts / 7 yr compressor (eligible residential system). Score uses Base.. Standard residential GREE mini-split coverage is 5 years parts and 7 years compressor for eligible post-2021 systems.
Install path
Professional install
Retail price
Installed quote only
Available retailers
not published
Manual links
All Match One-Way Cassette R32 service/installation manual, GREE All Match One-Way Cassette R32 official product page, All Match One-Way Cassette R32 owner manual, OWC09HP230V1R32AH / VIR09HP230V1R32AO All Match One-Way Cassette R32 submittal, GREE DFS warranty statement for units installed after 2021-12-31
Specification sheet
OWC09HP230V1R32AH / VIR09HP230V1R32AO All Match One-Way Cassette R32 submittal
Last sourced date
Aug 2, 2026

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
10 A[1]
Breaker needed
not published
Maximum breaker size
15 A[1]
Maximum fuse size
15 A[1]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
Interconnecting wire size AWG 14 / 4; main power wire per local code.[1]

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
GREE professional single-zone cassette and ducted systems publish field-supplied flared line sizes and maximum/precharged piping data; no included consumer line set length is published.
Maximum line-set length
66 ft[1]
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
38-55/64 x 15-5/32 x 7-1/64 in[1]
Outdoor dimensions
31-37/64 x 13-25/32 x 21-27/32 in[1]
Indoor weight
43 lb[1]
Outdoor weight
70.6 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the GREE Vireo R32 9,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC09HP230V1R32AH / VIR09HP230V1R32AO) myself, or do I need a pro?
GREE Vireo R32 9,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC09HP230V1R32AH / VIR09HP230V1R32AO) 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 GREE Vireo R32 9,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC09HP230V1R32AH / VIR09HP230V1R32AO) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 9,400 BTU/h of heating capacity at 5F. Rated heating operation extends down to -22 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 GREE Vireo R32 9,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC09HP230V1R32AH / VIR09HP230V1R32AO) need?
Published electrical requirements: 230 V voltage, 10 A 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.
How far can the outdoor unit be from the indoor head?
The published maximum line-set length is 66 ft. The outdoor unit's factory charge covers up to 25 ft of line; longer runs need added refrigerant. Measure the planned routing before ordering.
What warranty does the GREE Vireo R32 9,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC09HP230V1R32AH / VIR09HP230V1R32AO) carry?
The manufacturer publishes these warranty tiers: Base: 5 yr parts / 7 yr compressor (eligible residential system). Score uses Base.. Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. GREE Comfort: OWC09HP230V1R32AH and SAP09HP230V1R32AO GREE All Match One-Way Cassette R32 submittalSourced - manufacturer technical document

    Covers Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase, Manufacturer wire notes and more

  2. Air-Conditioning, Heating, and Refrigeration Institute: AHRI Active form-factor row 215415559Sourced - AHRI directory

    Covers AHRI certification number, Rated cooling capacity, EER2, Energy Star status, Rated heating capacity, HSPF2 (Region 4) and more

  3. GREE Comfort: GREE All Match One-Way Cassette R32 official product pageSourced - manufacturer technical document

    Covers Form factor

  4. GREE Comfort: GREE DFS warranty statement for units installed after 2021-12-31Sourced - manufacturer technical document

    Covers Legacy compressor warranty value, Legacy warranty value, Base compressor warranty, Base warranty conditions, Base parts warranty, Warranty notes

Last updated

Aug 2, 2026