What is the SEER2 rating of the TOSOT TMV-V48WL/NHC-T(U)?

The TOSOT TMV-V48WL/NHC-T(U) is rated at up to 23.5 SEER2 and 13.5 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 18.0-23.5.

Is the TOSOT TMV-V48WL/NHC-T(U) good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,000 BTU/h at 5°F with a COP of 2.30, so it is still 2.3 times as efficient as electric resistance heat at that temperature.

How much does the TOSOT TMV-V48WL/NHC-T(U) cost to run per year?

At its rated efficiency it costs about $975-$3,555 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,333 in Phoenix and $3,072 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the TOSOT TMV-V48WL/NHC-T(U) the same as the GREE GMV-V48WL/NHC-T(U)?

Yes, as far as the certified ratings go. ENERGY STAR lists both 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.

48,000 BTU mini-split heat pump · Ultra Heat GMV6 Mini

TOSOT TMV-V48WL/NHC-T(U)

Very good cooling efficiency and below average heating efficiency for a 48,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #12 of 146 48,000 BTU mini-splits for cooling efficiency, and costs about $1,395 a year to run in a mixed climate like Atlanta.

SEER2: 23.5 Cooling efficiency over a season
Very good · beats 70%
HSPF2: 9.0 Heating efficiency over a season
Below average · beats 10%
EER2: 13.5 Cooling efficiency on a 95°F day
Very good · beats 74%
Heat at 5°F: 38,000 BTU/h70% of its 47°F output
Very good · beats 86%

A good fit if…

You want low cooling bills - its SEER2 beats 70% of mini-splits.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 38,000 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

Specifications48,000 BTU, R-32

General
Brand	TOSOT
Also sold as	GREE
Outdoor unit model	TMV-V48WL/NHC-T(U)
Series	Ultra Heat GMV6 Mini
Type	Mini-split heat pump
Nominal size	48,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-32
Connected (smart) capable	No
On the market since	March 12, 2025
Last certified	March 26, 2026
Cooling
SEER2Seasonal efficiency, higher is better	23.5 (range 18.0-23.5)
EER2Efficiency at 95°F outdoors	11.7-13.5
Cooling capacity	48,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.8-9.0
Capacity at 47°F	54,000 BTU/h
Capacity at 17°F	31,000-33,000 BTU/h
Capacity at 5°F	38,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00-2.30
ENERGY STAR cold climate	Yes

Heating output as it gets colder70% kept at 5°F

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

Certified matchups3 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.
- · cold climate	23.5	13.5	9.0	38,000	218330525
- · cold climate	20.8	12.6	8.9	38,000	218330527
- · cold climate	18.0	11.7	8.8	38,000	218330514

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the TOSOT TMV-V48WL/NHC-T(U): the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

GREE GMV-V48WL/NHC-T(U)

Yearly running cost in 10 large cities$975-$3,555

Phoenix, AZ$1,333/yr
Miami, FL$975/yr
Houston, TX$1,200/yr
Atlanta, GA$1,395/yr
Los Angeles, CA$1,398/yr
New York, NY$3,555/yr
Chicago, IL$2,929/yr
Denver, CO$2,470/yr
Seattle, WA$1,545/yr
Minneapolis, MN$3,072/yr

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

Questions5

What is the SEER2 rating of the TOSOT TMV-V48WL/NHC-T(U)?: The TOSOT TMV-V48WL/NHC-T(U) is rated at up to 23.5 SEER2 and 13.5 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 18.0-23.5.
Is the TOSOT TMV-V48WL/NHC-T(U) good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,000 BTU/h at 5°F with a COP of 2.30, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
How much does the TOSOT TMV-V48WL/NHC-T(U) cost to run per year?: At its rated efficiency it costs about $975-$3,555 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,333 in Phoenix and $3,072 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the TOSOT TMV-V48WL/NHC-T(U) the same as the GREE GMV-V48WL/NHC-T(U)?: Yes, as far as the certified ratings go. ENERGY STAR lists both 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.
What refrigerant does the TOSOT TMV-V48WL/NHC-T(U) 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 $1,391/yrYou save $1,182/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 TOSOT TMV-V48WL/NHC-T(U)

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: $1,391
Current system, per year: $2,573
You save per year: $1,182
Payback: 15.2 years
Net after 10 years: -$6,178

Cooling $719Heating $672Electricity used: 8,694 kWhSaved vs. a minimum-efficiency heat pump: $597

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 48,000 BTU models

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TCL H48FMHD6XPC · cold climate24.0 SEER2 · 10.0 HSPF2
Bosch BMS500-AAM048-1CSXRC23.4 SEER2 · 9.2 HSPF2
NOVAIR LEA48MZ-6P-454-O · cold climate24.0 SEER2 · 10.0 HSPF2
Carrier 38MGRBQ48EA323.4 SEER2 · 9.2 HSPF2
NOVAIR LEA48-MZ-LCT- 454-O · cold climate24.0 SEER2 · 10.0 HSPF2
Cooper&Hunter CH-48MES-230VO23.4 SEER2 · 9.2 HSPF2

See all 146 48,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of March 26, 2026. How we use the data.