SplitAtlas

GREE / Vireo R32

GREE Vireo 18k Four-Way Cassette R-32 208/230V Mini-Split

Certified capacity
18,000 BTU/h[2]
SEER2
21 SEER2[2]
Heating floor
-22 F[1]
Voltage
230 V[1]
Install path
Professional install

At 18,000 BTU this Vireo cassette moves into whole-floor territory, and it is the point where the four-way head earns its keep - one ceiling unit covering a space that would otherwise need two wall heads. It certifies at 21 SEER2 and 9 HSPF2, holding its -22F low-ambient rating.

This is also the least efficient of the Vireo cassettes, and that is worth saying plainly: 21 SEER2 against 24 for the 9k. Bigger cassettes trade efficiency for reach. If the room genuinely needs 18,000 BTU, that is a fair trade; if you are sizing generously "to be safe," you are paying for it twice - once at purchase and again every month.

1 zoneProfessional installCurrent

Refrigerant generation

R-32 - current-generation refrigerant

Dealer-installation warranty note

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.

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.

Dealer path: GREE distributor path for distributor purchases; GREE online warranty claim form for equipment purchased online, Home Depot, or Lowes; GREE Select dealer installation and registration for the 10-year extended warranty.

Paid link

$3,303 / Fresh price - checked Aug 2, 2026

Check price at HVACDirect

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

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

Image: GREE Comfort official All-Match 360 Cassette R32 product page

Data completeness: 100%
Last sourced
Aug 2, 2026

SplitAtlas score

7.6 / 10

Methodology
Cooling efficiencyBelow average

(21.0 SEER2) among 18k systems

Heating efficiencyBottom quartile

(9.0 HSPF2) among 18k systems

Cold-weather performanceBelow average

(70% heat retained at 5F; -22 F heating floor) among 18k systems

NoiseAbove average

(-44 dBA indoor min / 59 dBA outdoor) among 18k systems

WarrantyBelow average

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

Feature setBelow average

(4 verified features) across the catalogue

Price-to-performanceBottom quartile

($3,303 median retail) among 18k systems

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

Key ratings

Rated cooling

18,000BTU/h[2]

Rated heating

18,000BTU/h[2]

Buyer review snapshot

Install difficulty

Professional flared-line install
  • Electrical: 230V; MCA 16 A; breaker/fuse 20 A.
  • Line set: Flared line connections; precharged 25 ft; max 66 ft.

Alternatives

Availability and price context

  • Verified current price: $3,303.00 at HVACDirect; availability in_stock; checked Aug 2, 2026. Dealer-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..

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 Select dealer installation and registration for the 10-year extended warranty.

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
5
Newest source retrieved
Aug 2, 2026

Warranty tiers

Warranty: 5 years parts and 7 years compressor as standard.

Review methodology

Strengths

  • 18,000 BTU of both heating and cooling from a single ceiling head.
  • -22F rated low-ambient performance, unchanged from the smaller units.
  • Replaces two wall heads in an open space, which often simplifies the line-set run.

Weaknesses

  • 21 SEER2 is the weakest of the Vireo cassette range.
  • Larger head means a deeper ceiling cavity requirement - check before committing.
  • Professional install, with a condensate pump and a genuine return path to plan.

Climate suitability

Minimum heating ambient
-22 F[1]
Rated heating at 5F
12,600 BTU/h[2]
Rated heating at 17F
14,700 BTU/h[2]
Rated heating at 47F
18,000 BTU/h[2]

Specifications

Show
Manufacturer
GREE
Brand
GREE
Product line
Vireo R32
Model number
CAS18HP230V1R32AH indoor / VIR18HP230V1R32AO outdoor
Indoor unit model
CAS18HP230V1R32AH
Outdoor unit model
VIR18HP230V1R32AO
Number of zones
1
Max indoor units
not published
Rated cooling capacity
18,000 BTU/h[2]
Rated heating capacity
18,000 BTU/h[2]
Voltage
230 V[1]
MCA
16 A[1]
Maximum fuse or breaker size
20 A[1]
Breaker needed
not published
SEER2
21 SEER2[2]
EER2
10.9 EER2[2]
HSPF2 (Region 4)
9 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
28-44 dB(A)[1]
Outdoor noise rating
59 dBA[1]
Indoor weight
37.5 lb[1]
Outdoor weight
94.8 lb[1]
Refrigerant
R-32[2]
Refrigerant charge
40.6 oz[1]
Manufacturer coverage
not published
Line-set size
1/4 in liquid / 1/2 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
Not ENERGY STAR certified[2]
AHRI certification number
215417457[2]
Warranty
Standard: 5 yr parts / 7 yr compressor (eligible residential system). 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
$3,303.00
Available retailers
HVACDirect
Manual links
AHRI Active row 215417457, All Match 360 Cassette R32 service/installation manual, GREE All Match 360 Cassette R32 official product page, All Match 360 Cassette R32 owner manual, CAS18HP230V1R32AH / VIR18HP230V1R32AO All Match 360 Cassette R32 submittal, GREE DFS warranty statement for units installed after 2021-12-31
Specification sheet
CAS18HP230V1R32AH / VIR18HP230V1R32AO All Match 360 Cassette R32 submittal
Last sourced date
Aug 2, 2026

Retail purchase context

Dealer-installation warranty note

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.

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.

Dealer path: GREE distributor path for distributor purchases; GREE online warranty claim form for equipment purchased online, Home Depot, or Lowes; GREE Select dealer installation and registration for the 10-year extended warranty.

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

Paid link

Dealer-installation warranty note

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.

Check price at HVACDirect

$3,303 / Fresh price - checked Aug 2, 2026

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
16 A[1]
Breaker needed
not published
Maximum breaker size
20 A[1]
Maximum fuse size
20 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
1/2 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
22-7/16 x 22-7/16 x 10-7/16 in[1]
Outdoor dimensions
37-23/32 x 15-53/64 x 25-63/64 in[1]
Indoor weight
37.5 lb[1]
Outdoor weight
94.8 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the GREE Vireo R32 18,000 BTU Four-Way Ceiling Cassette R-32 208/230V (CAS18HP230V1R32AH / VIR18HP230V1R32AO) myself, or do I need a pro?
GREE Vireo R32 18,000 BTU Four-Way Ceiling Cassette R-32 208/230V (CAS18HP230V1R32AH / VIR18HP230V1R32AO) 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 18,000 BTU Four-Way Ceiling Cassette R-32 208/230V (CAS18HP230V1R32AH / VIR18HP230V1R32AO) keep heating in a cold winter?
The manufacturer publishes 12,600 BTU/h of heating output at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 9 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 18,000 BTU Four-Way Ceiling Cassette R-32 208/230V (CAS18HP230V1R32AH / VIR18HP230V1R32AO) need?
Published electrical requirements: 230 V voltage, 16 A minimum circuit ampacity, and 20 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, and the included line set comes pre-charged for 25 ft. Longer runs than the included set allows typically mean added refrigerant and a pro visit, so measure the planned routing before ordering.
What warranty does the GREE Vireo R32 18,000 BTU Four-Way Ceiling Cassette R-32 208/230V (CAS18HP230V1R32AH / VIR18HP230V1R32AO) carry?
The manufacturer publishes these warranty tiers: Standard: 5 yr parts / 7 yr compressor (eligible residential system). Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. GREE Comfort: CAS18HP230V1R32AH and SAP18HP230V1R32AO GREE All Match 360 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. HVACDirect: HVACDirect exact product page VIR18HP230V1R32AO / CAS18HP230V1R32AHSourced - authorized distributor

    Covers Retail price

  4. GREE Comfort: GREE All Match 360 Cassette R32 official product pageSourced - manufacturer technical document

    Covers Form factor

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

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

Last updated

Aug 2, 2026