What is the SEER2 rating of the GREE GS18HP230V1CLO?

The GREE GS18HP230V1CLO is rated at up to 24.5 SEER2 and 13.7 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 21.0-24.5.

Is the GREE GS18HP230V1CLO good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 15,800 BTU/h at 5°F with a COP of 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.

How much does the GREE GS18HP230V1CLO cost to run per year?

At its rated efficiency it costs about $349-$1,144 a year in electricity in large U.S. cities, depending on climate and local rates - for example $459 in Phoenix and $979 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the GREE GS18HP230V1CLO the same as the GREE GS18HP230V1PUO?

Yes, as far as the certified ratings go. ENERGY STAR lists 4 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.

Which indoor units work with the GREE GS18HP230V1CLO?

ENERGY STAR lists 4 certified combinations for this outdoor unit. The highest-rated ones use GS18HP230V1CLI, GS18HP230V1DAI, GS20HP230V1OWCI.

18,000 BTU mini-split heat pump · Clivia

GREE GS18HP230V1CLO

Very good cooling efficiency and below average heating efficiency for a 18,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #51 of 465 18,000 BTU mini-splits for cooling efficiency, and costs about $458 a year to run in a mixed climate like Atlanta.

SEER2: 24.5 Cooling efficiency over a season
Very good · beats 79%
HSPF2: 9.5 Heating efficiency over a season
Below average · beats 24%
EER2: 13.7 Cooling efficiency on a 95°F day
Very good · beats 77%
Heat at 5°F: 15,800 BTU/h81% of its 47°F output
Below average · beats 27%

A good fit if…

You want low cooling bills - its SEER2 beats 79% of mini-splits.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 15,800 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

You mainly need heat - its HSPF2 is below average for mini-splits.

Calculate my running cost

Details

Specifications18,000 BTU, R-32

General
Brand	GREE
Also sold as	Kinghome, BOREAL
Outdoor unit model	GS18HP230V1CLO
Series	Clivia
Type	Mini-split heat pump
Nominal size	18,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-32
Connected (smart) capable	No
On the market since	March 20, 2024
Last certified	September 30, 2026
Cooling
SEER2Seasonal efficiency, higher is better	24.5 (range 21.0-24.5)
EER2Efficiency at 95°F outdoors	10.9-14.0
Cooling capacity	18,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.0-9.5
Capacity at 47°F	18,000 BTU/h
Capacity at 17°F	14,700-18,000 BTU/h
Capacity at 5°F	12,600-15,800 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80-1.90
ENERGY STAR cold climate	Yes

Heating output as it gets colder81% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with GS18HP230V1CLI at the standard test temperatures, in BTU/h:

Certified matchups4 indoor units

The same outdoor unit scores differently with each indoor unit. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
GS18HP230V1CLI · cold climate	24.5	13.7	9.0	14,600	218716417
GS18HP230V1DAI · cold climate	22.5	14.0	9.0	15,000	218807669
GS20HP230V1OWCI · cold climate	21.5	12.8	9.5	15,800	218807670
GS18HP230V1CASI · cold climate	21.0	10.9	9.0	12,600	218807668

Same unit, other model numbers3

These model numbers have exactly the same certified ratings and matchups as the GREE GS18HP230V1CLO: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

GREE GS18HP230V1PUO
Kinghome KW18XQ25S1DO
BOREAL NOV18HPJ132OA

Yearly running cost in 10 large cities$349-$1,144

Phoenix, AZ$459/yr
Miami, FL$349/yr
Houston, TX$413/yr
Atlanta, GA$458/yr
Los Angeles, CA$455/yr
New York, NY$1,144/yr
Chicago, IL$939/yr
Denver, CO$788/yr
Seattle, WA$490/yr
Minneapolis, MN$979/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions6

What is the SEER2 rating of the GREE GS18HP230V1CLO?: The GREE GS18HP230V1CLO is rated at up to 24.5 SEER2 and 13.7 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 21.0-24.5.
Is the GREE GS18HP230V1CLO good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 15,800 BTU/h at 5°F with a COP of 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
How much does the GREE GS18HP230V1CLO cost to run per year?: At its rated efficiency it costs about $349-$1,144 a year in electricity in large U.S. cities, depending on climate and local rates - for example $459 in Phoenix and $979 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the GREE GS18HP230V1CLO the same as the GREE GS18HP230V1PUO?: Yes, as far as the certified ratings go. ENERGY STAR lists 4 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
Which indoor units work with the GREE GS18HP230V1CLO?: ENERGY STAR lists 4 certified combinations for this outdoor unit. The highest-rated ones use GS18HP230V1CLI, GS18HP230V1DAI, GS20HP230V1OWCI.
What refrigerant does the GREE GS18HP230V1CLO use?: It uses R-32.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $471/yrYou save $457/yrSee details ↓

1. Where you live

StateCityElectricity ¢ per kWh

Adjust heating and cooling hours

Filled in from your city's climate. Change them if you run the system much more or less than usual.

Cooling hours full-load hours per yearHeating hours full-load hours per year

2. The heat pump GREE GS18HP230V1CLO

Find a model (fills in the ratings below)

SEER2 cooling efficiencyHSPF2 heating efficiencyCooling capacity BTU/hHeating capacity BTU/h

3. What it replaces

Current heatingFurnace efficiency (AFUE %)Gas price, $/thermCurrent coolingOld AC rating SEER2 (10 ≈ 15+ years old)

4. Price replace the example with your quote

Installed price, $Rebates and incentives, $ utility, state

Heat pump, per year: $471
Current system, per year: $928
You save per year: $457
Payback: 15.3 years
Net after 10 years: -$2,427

Cooling $259Heating $212Electricity used: 2,943 kWhSaved vs. a minimum-efficiency heat pump: $241

Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

Similar 18,000 BTU models

Fujitsu AOUH18KUAH1 · cold climate24.5 SEER2 · 11.4 HSPF2
Kenmore D5CPRAH18AA · cold climate24.5 SEER2 · 15.2 HSPF2
Mitsubishi Electric PUZ-AK18NL224.7 SEER2 · 9.8 HSPF2
TOSOT SU-AORAKI18-230/O · cold climate24.5 SEER2 · 9.5 HSPF2
Mitsubishi Electric PUZ-AK18NL24.7 SEER2 · 9.8 HSPF2
TOSOT TWH18PD32AO · cold climate24.5 SEER2 · 9.5 HSPF2
Trane / Mitsubishi Electric TRUZA0181KA8025.0 SEER2 · 9.2 HSPF2
AireForce DXH18PSK3IH · cold climate24.5 SEER2 · 9.0 HSPF2

See all 465 18,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 30, 2026. How we use the data.