What is the SEER2 rating of the TCL H48TDH18XAC?

The TCL H48TDH18XAC is rated at up to 18.0 SEER2 and 9.0 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the TCL H48TDH18XAC good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 33,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.

How much does the TCL H48TDH18XAC cost to run per year?

At its rated efficiency it costs about $1,227-$3,295 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,515 in Phoenix and $2,755 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Which indoor units work with the TCL H48TDH18XAC?

ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use H48APH20UDE, H48AHH18XAE.

4-ton central heat pump · IVS 18

TCL H48TDH18XAC

Average cooling and heating efficiency for a 4-ton central heat pump, and certified for cold climates.

Ranks #96 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,377 a year to run in a mixed climate like Atlanta.

SEER2: 18.0 Cooling efficiency over a season
Average · beats 66%
HSPF2: 9.0 Heating efficiency over a season
Average · beats 54%
EER2: 9.0 Cooling efficiency on a 95°F day
Below average · beats 4%
Heat at 5°F: 33,000 BTU/h70% of its 47°F output
Below average · beats 5%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 33,000 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

Specifications4 ton, R-454B

General
Brand	TCL
Outdoor unit model	H48TDH18XAC
Series	IVS 18
Type	Central heat pump
Nominal size	4 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	November 2, 2024
Last certified	September 15, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.0 (range 18.0)
EER2Efficiency at 95°F outdoors	9.0
Cooling capacity	47,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.5-9.0
Capacity at 47°F	47,000 BTU/h
Capacity at 17°F	35,000 BTU/h
Capacity at 5°F	33,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80
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 matchup with H48APH20UDE 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.
H48APH20UDE · cold climate	18.0	9.0	9.0	33,000	218736936
H48AHH18XAE · cold climate	18.0	9.0	8.5	33,000	216046819

Yearly running cost in 10 large cities$1,227-$3,295

Phoenix, AZ$1,515/yr
Miami, FL$1,227/yr
Houston, TX$1,358/yr
Atlanta, GA$1,377/yr
Los Angeles, CA$1,341/yr
New York, NY$3,295/yr
Chicago, IL$2,676/yr
Denver, CO$2,226/yr
Seattle, WA$1,368/yr
Minneapolis, MN$2,755/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 TCL H48TDH18XAC?: The TCL H48TDH18XAC is rated at up to 18.0 SEER2 and 9.0 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the TCL H48TDH18XAC good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 33,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.
How much does the TCL H48TDH18XAC cost to run per year?: At its rated efficiency it costs about $1,227-$3,295 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,515 in Phoenix and $2,755 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Which indoor units work with the TCL H48TDH18XAC?: ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use H48APH20UDE, H48AHH18XAE.
What refrigerant does the TCL H48TDH18XAC use?: It uses R-454B.

Running cost and savings

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

Heat pump $1,504/yrYou save $919/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 TCL H48TDH18XAC

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: $1,504
Current system, per year: $2,423
You save per year: $919
Payback: 19.0 years
Net after 10 years: -$8,306

Cooling $919Heating $585Electricity used: 9,400 kWhSaved vs. a minimum-efficiency heat pump: $355

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.

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Friedrich WFPU17Y483D · cold climate18.0 SEER2 · 9.0 HSPF2
American Standard 4A6V8X60A1 · cold climate18.0 SEER2 · 8.5 HSPF2
Daikin DH9VSA6010A · cold climate18.0 SEER2 · 9.0 HSPF2
Bryant 248TAN048**AA18.0 SEER2 · 8.5 HSPF2
Daikin DH9VSA4810A · cold climate18.0 SEER2 · 9.0 HSPF2
Bryant PH8TAN548**AA18.0 SEER2 · 8.5 HSPF2

See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 15, 2026. How we use the data.