What is the SEER2 rating of the TCL H18TDHXPC?

The TCL H18TDHXPC is rated at up to 17.0 SEER2 and 11.0 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the TCL H18TDHXPC good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 18,000 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 TCL H18TDHXPC cost to run per year?

At its rated efficiency it costs about $496-$1,222 a year in electricity in large U.S. cities, depending on climate and local rates - for example $597 in Phoenix and $1,010 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the TCL H18TDHXPC the same as the TCL THH18TEI2NAG0F24?

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.

Which indoor units work with the TCL H18TDHXPC?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses H18FAHUDE.

1.5-ton central heat pump · Front return

TCL H18TDHXPC

Average cooling efficiency and very good heating efficiency for a 1.5-ton central heat pump, and certified for cold climates.

Ranks #73 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $522 a year to run in a mixed climate like Atlanta.

SEER2: 17.0 Cooling efficiency over a season
Average · beats 49%
HSPF2: 9.5 Heating efficiency over a season
Very good · beats 70%
EER2: 11.0 Cooling efficiency on a 95°F day
Below average · beats 23%
Heat at 5°F: 18,000 BTU/h100% of its 47°F output
Below average · beats 20%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 18,000 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 70% of central heat pumps.
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

Specifications1.5 ton, R-454B

General
Brand	TCL
Outdoor unit model	H18TDHXPC
Series	Front return
Type	Central heat pump
Nominal size	1.5 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	February 2, 2026
Last certified	April 22, 2026
Cooling
SEER2Seasonal efficiency, higher is better	17.0 (range 17.0)
EER2Efficiency at 95°F outdoors	11.0
Cooling capacity	18,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.5
Capacity at 47°F	18,000 BTU/h
Capacity at 17°F	18,000 BTU/h
Capacity at 5°F	18,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.90
ENERGY STAR cold climate	Yes

Heating output as it gets colder100% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with H18FAHUDE at the standard test temperatures, in BTU/h:

Certified matchups1 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.
H18FAHUDE · cold climate	17.0	11.0	9.5	18,000	218332482

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the TCL H18TDHXPC: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

TCL THH18TEI2NAG0F24

Yearly running cost in 10 large cities$496-$1,222

Phoenix, AZ$597/yr
Miami, FL$496/yr
Houston, TX$535/yr
Atlanta, GA$522/yr
Los Angeles, CA$503/yr
New York, NY$1,222/yr
Chicago, IL$988/yr
Denver, CO$818/yr
Seattle, WA$500/yr
Minneapolis, MN$1,010/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 TCL H18TDHXPC?: The TCL H18TDHXPC is rated at up to 17.0 SEER2 and 11.0 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the TCL H18TDHXPC good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 18,000 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 TCL H18TDHXPC cost to run per year?: At its rated efficiency it costs about $496-$1,222 a year in electricity in large U.S. cities, depending on climate and local rates - for example $597 in Phoenix and $1,010 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the TCL H18TDHXPC the same as the TCL THH18TEI2NAG0F24?: 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.
Which indoor units work with the TCL H18TDHXPC?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses H18FAHUDE.
What refrigerant does the TCL H18TDHXPC 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 $585/yrYou save $343/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 H18TDHXPC

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: $585
Current system, per year: $928
You save per year: $343
Payback: 20.4 years
Net after 10 years: -$3,568

Cooling $373Heating $212Electricity used: 3,656 kWhSaved vs. a minimum-efficiency heat pump: $127

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 1.5 ton models

AC Pro AOX430U-18HFN1-M · cold climate17.0 SEER2 · 9.5 HSPF2
Jetson HP-18ODU-001 · cold climate17.0 SEER2 · 9.3 HSPF2
Lennox ML15KSPV-018-230A · cold climate17.2 SEER2 · 8.8 HSPF2
Armstrong Air 4SHP17LE118P-**A16.8 SEER2 · 8.5 HSPF2
Ducane 7SHP15V18P-**A · cold climate17.2 SEER2 · 8.8 HSPF2
Comfort-Aire HRG1518S1R-**A16.8 SEER2 · 8.5 HSPF2
MRCOOL DIYH-18-HP-C-230C25 · cold climate17.5 SEER2 · 10.0 HSPF2
Ducane 4HP17L18P-**A16.8 SEER2 · 8.5 HSPF2

See all 170 1.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of April 22, 2026. How we use the data.