What is the SEER2 rating of the Trane 4TWV0X24A1?

The Trane 4TWV0X24A1 is rated at up to 19.5 SEER2 and 12.7 EER2 for cooling and up to 8.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 55 certified matchups SEER2 ranges from 17.0-19.5.

Is the Trane 4TWV0X24A1 good for cold climates?

It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 2-ton model.

How much does the Trane 4TWV0X24A1 cost to run per year?

At its rated efficiency it costs about $569-$1,512 a year in electricity in large U.S. cities, depending on climate and local rates - for example $700 in Phoenix and $1,263 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Trane 4TWV0X24A1 the same as the American Standard 4A6V0X24A1?

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 Trane 4TWV0X24A1?

ENERGY STAR lists 55 certified combinations for this outdoor unit. The highest-rated ones use TAMXB0B30V31, 4TXCB004DS3, 4PX*BU36BS3.

What refrigerant does the Trane 4TWV0X24A1 use?

It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

2-ton central heat pump · XV20I

Trane 4TWV0X24A1

Excellent cooling efficiency and average heating efficiency for a 2-ton central heat pump, but not rated for cold climates.

Ranks #45 of 331 2 ton central heat pumps for cooling efficiency, and costs about $633 a year to run in a mixed climate like Atlanta.

SEER2: 19.5 Cooling efficiency over a season
Excellent · beats 91%
HSPF2: 8.7 Heating efficiency over a season
Average · beats 47%
EER2: 12.7 Cooling efficiency on a 95°F day
Very good · beats 84%
Heat at 5°F: 13,400 BTU/h63% of its 47°F output
Below average · beats 27%

A good fit if…

You want low cooling bills - its SEER2 beats 91% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 55 certified pairings.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications2 ton, R-410A

General
Brand	Trane
Also sold as	American Standard
Outdoor unit model	4TWV0X24A1
Series	XV20I
Type	Central heat pump
Nominal size	2 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	January 1, 2023
Last certified	July 9, 2025
Cooling
SEER2Seasonal efficiency, higher is better	19.5 (range 17.0-19.5)
EER2Efficiency at 95°F outdoors	11.7-12.7
Cooling capacity	22,200-24,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.7
Capacity at 47°F	19,600-22,400 BTU/h
Capacity at 17°F	16,400-17,900 BTU/h
Capacity at 5°F	12,400-13,400 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.60-1.95
ENERGY STAR cold climate	No

Heating output as it gets colder63% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with TAMXB0B30V31 at the standard test temperatures, in BTU/h:

Certified matchups55 indoor units

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

Indoor unit	Furnace	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
TAMXB0B30V31	-	19.5	12.7	8.7	12,900	210929561
4TXCB004DS3	*UHMB060ACV3	19.5	12.7	8.5	12,700	210288157
4PX*BU36BS3	*UHMB060ACV3	19.5	12.7	8.5	12,700	207558947
4PX*BU36BS3	S9V2B060U3VSA+RP	19.5	12.5	8.5	13,000	207526405
4PX*BU36BS3	S9V2B060U3VSB+RP	19.5	12.5	8.5	13,000	214638791
4PX*BU36BS3	*UHMB060CCV3	19.5	12.7	8.5	12,700	214250619
4PX*BU36BS3	*UHMB080CCV3	19.5	12.7	8.5	12,800	214250617
4TXCB004DS3	*UHMB060CCV3	19.5	12.7	8.5	12,700	214250625
4TXCB003DS3	*UHMB080ACV3	19.5	12.7	8.2	13,100	210653459
4TXCB003DS3	*UHMB060ACV3	19.5	12.7	8.2	13,100	210653458
4TXCB003DS3	*UHMB060CCV3	19.5	12.7	8.2	13,000	214250621
4TXCB003DS3	*UHMB080CCV3	19.5	12.7	8.2	13,100	214250623
TEM8A0B30V31+TDR	-	19.0	12.5	8.7	13,100	207526337
TEM8A0B24V21+TDR	-	19.0	12.5	8.7	13,200	210636920
4PX*BU36BS3	S9V2B040U3PSB+RP	19.0	12.5	8.5	13,100	207526368
4PX*BU36BS3	S9V2B040U3VSA+RP	19.0	12.5	8.5	13,100	207526404
4PX*BU36BS3	S9V2B040U3VSB+RP	19.0	12.5	8.5	13,100	214638793
4TXCB004DS3	S9V2B040U3VSB+RP	19.0	12.5	8.5	13,100	214638797
4PX*BU36BS3	S9V2B080U4PSC+RP	19.0	12.7	8.5	12,800	214639417
4TXCB004DS3	S9V2B080U4PSC+RP	19.0	12.7	8.5	12,900	214639431
4TXCB004DS3	S9V2B040U3PSC+RP	19.0	12.5	8.5	12,700	214639433
4TXCB003DS3	S9V2B040U3VSA+RP	19.0	12.0	8.2	13,400	210653452
4TXCB003DS3	S9V2B040U3PSB+RP	19.0	12.0	8.2	13,400	210653455
4TXCB003DS3	S9V2B040U3VSB+RP	19.0	12.5	8.2	13,300	214638795
4PX*BU30BS3	S9V2B040U3PSC+RP	19.0	12.5	8.2	12,900	214639405
4PX*BU30BS3	S9V2B080U4PSC+RP	19.0	12.5	8.2	13,100	214639411
4PX*BU36BS3	S9V2B060U4PSC+RP	18.5	12.7	8.5	12,800	214639415
4TXCB004DS3	S9V2B060U4PSC+RP	18.5	12.7	8.5	12,900	214639429
4TXCB004DS3	S9V2B060U4VSB+RP	18.5	12.6	8.5	12,900	215825675
4PX*BU30BS3	S9V2B060U4PSC+RP	18.5	12.5	8.2	13,200	214639413
4TXCB003DS3	S9V2B060U4PSC+RP	18.5	12.5	8.2	13,200	214639421
4TXCB003DS3	S9V2B060U4VSB+RP	18.5	12.5	8.2	13,100	215825671
4TXCB004DS3	L8V1A060U3VSA+RP	18.0	12.0	8.2	12,600	210653462
4PX*BU36BS3	L8V1A060U3VSA+RP	18.0	12.0	8.2	12,500	210653450
4TXCB004DS3	L8V1A060U3VSB+RP	18.0	12.0	8.2	12,600	212629785
4PX*BU36BS3	L8V1A060U3VSB+RP	18.0	12.0	8.2	12,500	212629773
4TXCB003DS3	L8V1A060U3VSA+RP	18.0	12.0	8.0	12,900	210653457
4TXCB004DS3	L8V1A040U3VSA+RP	17.5	12.0	8.2	12,600	210653461
4PX*BU36BS3	S8V2A040M3PCA	17.5	12.5	8.2	12,400	210691802
4TXCB004DS3	S8V2A040M3PCA	17.5	12.5	8.2	12,400	210691806
4PX*BU36BS3	S8V2A040M3PDA	17.5	12.5	8.2	12,400	211081171
4TXCB004DS3	S8V2A040M3PDA	17.5	12.5	8.2	12,400	211081175
4TXCB004DS3	L8V1A040U3VSB+RP	17.5	12.0	8.2	12,600	212629783
4TXCB004DS3	S9V2B060D3PSC+RP	17.5	11.7	8.2	12,600	214639427
4PX*BU36BS3	S8V2A040M3PDB	17.5	12.5	8.2	12,400	214252923
4TXCB004DS3	S8V2A040M3PCB	17.5	12.5	8.2	12,400	214252941
4TXCB004DS3	S8V2A040M3PDB	17.5	12.5	8.2	12,400	214252943
4PX*BU36BS3	S8V2A040M3PCB	17.5	12.5	8.2	12,400	214252929
4PX*BU36BS3	L8V1A040U3VSB+RP	17.5	12.0	8.1	12,500	212629771
4TXCB003DS3	S8V2A040M3PCA	17.5	12.0	8.0	12,800	210691804
4TXCB003DS3	S8V2A040M3PDA	17.5	12.0	8.0	12,800	211081174
4TXCB003DS3	L8V1A040U3VSA+RP	17.5	12.0	8.0	12,900	210653460
4TXCB003DS3	S8V2A040M3PDB	17.5	12.0	8.0	12,800	214252933
4TXCB003DS3	*DD2B060ACV3	17.5	11.7	7.8	13,000	211597913
4TXCB004DS3	S9V2B040D3PSC+RP	17.0	11.7	8.2	12,500	214639425

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Trane 4TWV0X24A1: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

American Standard 4A6V0X24A1

Yearly running cost in 10 large cities$569-$1,512

Phoenix, AZ$700/yr
Miami, FL$569/yr
Houston, TX$627/yr
Atlanta, GA$633/yr
Los Angeles, CA$616/yr
New York, NY$1,512/yr
Chicago, IL$1,227/yr
Denver, CO$1,020/yr
Seattle, WA$627/yr
Minneapolis, MN$1,263/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 Trane 4TWV0X24A1?: The Trane 4TWV0X24A1 is rated at up to 19.5 SEER2 and 12.7 EER2 for cooling and up to 8.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 55 certified matchups SEER2 ranges from 17.0-19.5.
Is the Trane 4TWV0X24A1 good for cold climates?: It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 2-ton model.
How much does the Trane 4TWV0X24A1 cost to run per year?: At its rated efficiency it costs about $569-$1,512 a year in electricity in large U.S. cities, depending on climate and local rates - for example $700 in Phoenix and $1,263 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Trane 4TWV0X24A1 the same as the American Standard 4A6V0X24A1?: 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 Trane 4TWV0X24A1?: ENERGY STAR lists 55 certified combinations for this outdoor unit. The highest-rated ones use TAMXB0B30V31, 4TXCB004DS3, 4PX*BU36BS3.
What refrigerant does the Trane 4TWV0X24A1 use?: It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and 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 $694/yrYou save $477/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 Trane 4TWV0X24A1

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: $694
Current system, per year: $1,171
You save per year: $477
Payback: 18.9 years
Net after 10 years: -$4,227

Cooling $426Heating $268Electricity used: 4,336 kWhSaved vs. a minimum-efficiency heat pump: $198

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 2 ton models

Navien, Inc. NAZ17V3622A119.5 SEER2 · 8.8 HSPF2
MDV MOD30-24HFN1-MW · cold climate19.4 SEER2 · 10.5 HSPF2
Trane/American Standard 5HPL6024A1000A19.5 SEER2 · 9.4 HSPF2
Trane/American Standard 5HPL9024A1000A19.2 SEER2 · 8.9 HSPF2
Tempstar N5H9V24*K*AAA · cold climate19.5 SEER2 · 10.0 HSPF2
1HVAC ACIQ-24-HPB · cold climate19.0 SEER2 · 10.5 HSPF2
Carrier 27VPA924A*030 · cold climate19.5 SEER2 · 10.0 HSPF2
Innovair SHV24H2R20 · cold climate19.0 SEER2 · 10.5 HSPF2

See all 331 2 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 9, 2025. How we use the data.