Cosmo / Cosmo Series
Cosmo 9.1k R-32 115V Mini-Split
The Cosmo 9k (115V) is a plug-friendly value single-zone built by Gree and sold through TOSOT Direct: SEER2 20.5, EER2 11.9, HSPF2 8.8 on current R-32, holding its full 10,000 BTU of heat from 47F all the way down to 17F before easing to 7,600 BTU at 5F. It runs on an ordinary 115V circuit and is ENERGY STAR certified, making it an easy, efficient pick for a small room.
Refrigerant generation
R-32 - current-generation refrigerant
Paid link
$700 / Fresh price - checked Jul 24, 2026
Need this installed?
Get installation quotes- Last sourced
- Aug 17, 2026
SplitAtlas score
7.9 / 10
(20.5 SEER2) among <=9k systems
(8.8 HSPF2) among <=9k systems
(76% heat retained at 5F; -13 F heating floor) among <=9k systems
(5 yr parts / 5 yr compressor) across the catalogue
(6 verified features) across the catalogue
($700 median retail) among <=9k systems
(4 manuals; spec sheet; 14 error-code rows) across the catalogue
Key ratings
Buyer review snapshot
Install difficulty
- Electrical: 115V; MCA 19 A; breaker/fuse 20 A.
- Line set: Flared line connections; included 16 ft; max 65 ft.
Alternatives
- Blueridge XS6 Max Efficiency 9,000 BTU R-454B 208/230V (BXS6A09WM0 / BXS6A09UC0)
8.9 score / 9k / SEER2 33.3 / -22 F heating floor / 230V
Exact destination at Alpine Home Air: $1,689.00, checked Jul 24, 2026
- Senville ELITE 9,000 BTU R-454B 208/230V (SENE-09EL-IHH / SENE-09EL-OH)
8.8 score / 9k / SEER2 33.3 / -22 F heating floor / 187-253V
Exact destination at Senville: $1,599.99, checked Jul 24, 2026
- ACiQ Extreme 9,000 BTU R-454B 208/230V (ACIQ-09W-HH-MD / ACIQ-09ZPL-HP230C)
8.8 score / 9k / SEER2 27.4 / -22 F heating floor / 230V
Exact destination at HVACDirect: $1,499.99, checked Jul 26, 2026
Availability and price context
- Verified current price: $699.99 at TOSOT Direct; availability in_stock; checked Jul 24, 2026.
Source date
- Model data sourced
- Aug 17, 2026
- Page reviewed
- Jul 24, 2026
- Source-backed records
- 5
- Newest source retrieved
- Aug 17, 2026
Warranty tiers
Warranty: 5 years parts and compressor as standard.
Strengths
- Holds a flat 10,000 BTU of heat from 47F to 17F - strong mid-cold output for the size.
- 115V operation and ENERGY STAR certification with current R-32 refrigerant.
- Gree-built hardware at a direct-to-consumer value price.
Weaknesses
- Heat tapers to 7,600 BTU at 5F - adequate but not a deep-cold specialist.
- Cosmo/TOSOT is an online value brand with a thinner support network than the premium names; professional install still recommended.
Climate suitability
- Minimum heating ambient
- -13 F[1]
- Rated heating at 5F
- 7,600 BTU/h[4]
- Rated heating at 17F
- 10,000 BTU/h[4]
- Rated heating at 47F
- 10,000 BTU/h[4]
Specifications
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- Manufacturer
- Cosmo
- Brand
- Cosmo
- Product line
- Cosmo Series
- Model number
- GWH09AWCXB-A6DN*/I indoor / GWH09ATCXB-A6DNA1C/O outdoor
- Indoor unit model
- GWH09AWCXB-A6DN*/I
- Outdoor unit model
- GWH09ATCXB-A6DNA1C/O
- Number of zones
- 1
- Max indoor units
- not published
- Rated cooling capacity
- 9,100 BTU/h[4]
- Rated heating capacity
- 10,000 BTU/h[4]
- Voltage
- 115 V[1]
- MCA
- 19 A[1]
- Maximum fuse or breaker size
- 20 A[1]
- Breaker needed
- not published
- SEER2
- 20.5 SEER2[4]
- EER2
- 11.9 EER2[4]
- HSPF2 (Region 4)
- 8.8 HSPF2[4]
- HSPF2 (Region 5)
- not published
- COP
- not published
- COP at 47F
- not published
- COP at 5F
- 1.86 COP[4]
- Minimum outdoor heating temperature
- -13 F[1]
- Minimum outdoor cooling temperature
- -13 F[1]
- Maximum outdoor temperature
- 118 F[1]
- Indoor noise range
- 43/24 dB(A)[1]
- Outdoor noise rating
- not published
- Indoor weight
- 19.8 lb[1]
- Outdoor weight
- 55.1 lb[1]
- Refrigerant
- R-32[4]
- 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[2]
- Maximum line-set length
- 65 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
- supported[2]
- Energy Star status
- ENERGY STAR certified[5]
- AHRI certification number
- 215685134[4]
- Warranty
- Standard: 5 yr parts / 5 yr compressor (published Cosmo warranty terms). 5-year TOSOT Direct Cosmo product-page warranty
- Install path
- Professional install / DIY-marketed
- Marketing install label
- DIY-marketed
- Retail price
- $699.99
- Available retailers
- TOSOT Direct
- Manual links
- Cosmo Single-Zone 9-24K User Manual, TOSOT Direct product documents page for Cosmo Series manuals, 9,000 BTU Mini-Split Heat Pump Air Conditioner-120V product-page specifications, TOSOT Cosmo Series brochure specifications for GWH09ATCXB-A6DNA1C
- Specification sheet
- 9,000 BTU Mini-Split Heat Pump Air Conditioner-120V product-page specifications
- Last sourced date
- Aug 17, 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
$700 / Fresh price - checked Jul 24, 2026
Installation considerations
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- Liquid line
- 1/4 in[1]
- Suction line
- 3/8 in[1]
- Line connection type
- Flared line connections[3]
- Precharged length
- not published
- Included line-set length
- 16 ft[2]
- Maximum line-set length
- 65 ft[1]
- Max line set per indoor
- not published
- Max height between indoor units
- not published
- Indoor dimensions
- 32.9 in W x 10.8 in H x 7.9 in D[1]
- Outdoor dimensions
- 28.8 in W x 21.9 in H x 13 in D[1]
- Indoor weight
- 19.8 lb[1]
- Outdoor weight
- 55.1 lb[1]
- Drain size
- not published
Related systems and guides
- More Cosmo systems
- Blueridge XS1 Basic 9.1k 230V
- Cosmo 9.1k model
- Cosmo 12k model
- Blueridge XS1 Basic 9.1k 115V
- Guide library
- Mini split buying guide
- Single-zone vs multi-zone mini splits
- Troubleshooting
- Do mini splits work in cold weather?
- The best cold-climate mini splits of 2026
- The best mini splits for heating of 2026
- Mini split heating capacity in the cold: what your unit actually delivers at 5F
- The mini split defrost cycle, explained
- The best DIY mini splits of 2026
- What "DIY mini split" actually means
- How to install a mini split (DIY overview)
- R-32 vs R-454B: the mini split refrigerant change explained
- Mini split for a hot upstairs
- Mini split not heating
- Mini split indoor unit freezing up
- Mini split remote not working
- Mini split lights blinking
- Mini split Wi-Fi not connecting
- Line sets
- Line-set covers
Frequently asked questions
- Can I install the Cosmo Series 9,100 BTU R-32 115V (GWH09AWCXB-A6DN***/I / GWH09ATCXB-A6DNA1C/O) myself, or do I need a pro?
- Cosmo Series 9,100 BTU R-32 115V (GWH09AWCXB-A6DN***/I / GWH09ATCXB-A6DNA1C/O) 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 Cosmo Series 9,100 BTU R-32 115V (GWH09AWCXB-A6DN***/I / GWH09ATCXB-A6DNA1C/O) keep heating in a cold winter?
- The manufacturer publishes 7,600 BTU/h of heating output at 5F. Rated heating operation extends down to -13 F. Certified heating efficiency is 8.8 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 Cosmo Series 9,100 BTU R-32 115V (GWH09AWCXB-A6DN***/I / GWH09ATCXB-A6DNA1C/O) need?
- Published electrical requirements: 115 V voltage, 19 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 65 ft, and the included line set comes pre-charged for 16 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 Cosmo Series 9,100 BTU R-32 115V (GWH09AWCXB-A6DN***/I / GWH09ATCXB-A6DNA1C/O) carry?
- The manufacturer publishes these warranty tiers: Standard: 5 yr parts / 5 yr compressor (published Cosmo warranty terms). Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.
Data sources
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- TOSOT Direct: TOSOT Residential and Light Commercial Split Systems brochure Cosmo table for GWH09ATCXB-D6DNA1CSourced - manufacturer technical document
Covers Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase, Manufacturer wire notes and more
- TOSOT Direct: 9,000 BTU Mini-Split Heat Pump Air Conditioner-120V official product pageSourced - manufacturer product page
Covers Included line-set length, Wi-Fi support, Retail price, Legacy compressor warranty value, Legacy warranty value, Standard compressor warranty and more
- TOSOT Direct / Cosmo: Cosmo Single-Zone 9-24K User ManualSourced - secondary source
Covers Line connection type
- AHRI certificate #215685134 - 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
- ENERGY STAR: ENERGY STAR exact row check for AHRI 216997533Sourced - Energy Star listing
Covers Energy Star status
Last updated
Jul 24, 2026