What is the SEER2 rating of the TOSOT KH05TCNHA?

The TOSOT KH05TCNHA is rated at up to 18.0 SEER2 and 11.2 EER2 for cooling and up to 8.3 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the TOSOT KH05TCNHA good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 51,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the TOSOT KH05TCNHA cost to run per year?

At its rated efficiency it costs about $1,467-$4,256 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,855 in Phoenix and $3,591 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the TOSOT KH05TCNHA the same as the GREE TK-H05TC/NHA-D(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.

5-ton packaged heat pump · DC inverter rooftop unit

TOSOT KH05TCNHA

Very good cooling efficiency and average heating efficiency for a 5-ton packaged heat pump, and certified for cold climates.

Ranks #7 of 29 5 ton packaged heat pumps for cooling efficiency, and costs about $1,748 a year to run in a mixed climate like Atlanta.

SEER2: 18.0 Cooling efficiency over a season
Very good · beats 86%
HSPF2: 8.3 Heating efficiency over a season
Average · beats 67%
EER2: 11.2 Cooling efficiency on a 95°F day
Below average · beats 27%
Heat at 5°F: 51,000 BTU/h89% of its 47°F output
Very good · beats 73%

A good fit if…

You want low cooling bills - its SEER2 beats 86% of packaged heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 51,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications5 ton, R-32

General
Brand	TOSOT
Also sold as	Kinghome, GREE
Outdoor unit model	KH05TCNHA
Series	DC inverter rooftop unit
Type	Packaged heat pump
Nominal size	5 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-32
Connected (smart) capable	No
On the market since	February 27, 2026
Last certified	July 17, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.0 (range 18.0)
EER2Efficiency at 95°F outdoors	11.2
Cooling capacity	56,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.3
Capacity at 47°F	57,000 BTU/h
Capacity at 17°F	34,000 BTU/h
Capacity at 5°F	51,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00
ENERGY STAR cold climate	Yes

Heating output as it gets colder89% 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 matchups2 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	18.0	11.2	8.3	51,000	218156602
- · cold climate	18.0	11.2	8.3	51,000	218679546

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the TOSOT KH05TCNHA: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

GREE TK-H05TC/NHA-D(U)

Yearly running cost in 10 large cities$1,467-$4,256

Phoenix, AZ$1,855/yr
Miami, FL$1,467/yr
Houston, TX$1,664/yr
Atlanta, GA$1,748/yr
Los Angeles, CA$1,715/yr
New York, NY$4,256/yr
Chicago, IL$3,470/yr
Denver, CO$2,897/yr
Seattle, WA$1,790/yr
Minneapolis, MN$3,591/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 KH05TCNHA?: The TOSOT KH05TCNHA is rated at up to 18.0 SEER2 and 11.2 EER2 for cooling and up to 8.3 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the TOSOT KH05TCNHA good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 51,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the TOSOT KH05TCNHA cost to run per year?: At its rated efficiency it costs about $1,467-$4,256 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,855 in Phoenix and $3,591 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the TOSOT KH05TCNHA the same as the GREE TK-H05TC/NHA-D(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 KH05TCNHA 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 $1,864/yrYou save $1,040/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 KH05TCNHA

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: $1,864
Current system, per year: $2,904
You save per year: $1,040
Payback: 20.2 years
Net after 10 years: -$10,604

Cooling $1,095Heating $769Electricity used: 11,652 kWhSaved vs. a minimum-efficiency heat pump: $365

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 5 ton models

MRCOOL MDPH18060D · cold climate18.0 SEER2 · 8.3 HSPF2
Innovair TPV60H2XA · cold climate17.0 SEER2 · 8.8 HSPF2
ECOER ERDA19H-60AA · cold climate18.5 SEER2 · 9.2 HSPF2
1HVAC ACIQ-PHH1760000K000V · cold climate17.0 SEER2 · 8.3 HSPF2
York PH9E60N00D21 · cold climate19.0 SEER2 · 9.0 HSPF2
MRCOOL MDPH180604 · cold climate17.0 SEER2 · 8.3 HSPF2
Bosch BPBA-60RCB-M18S · cold climate19.0 SEER2 · 9.0 HSPF2
Hisense AR-60U3R25U · cold climate17.0 SEER2 · 8.1 HSPF2

See all 29 5 ton packaged heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 17, 2026. How we use the data.