What is the SEER2 rating of the Trane 5TWV8X48A1?

The Trane 5TWV8X48A1 is rated at up to 18.1 SEER2 and 10.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Trane 5TWV8X48A1 good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,500 BTU/h at 5°F with a COP of 2.20, so it is still 2.2 times as efficient as electric resistance heat at that temperature.

How much does the Trane 5TWV8X48A1 cost to run per year?

At its rated efficiency it costs about $1,184-$3,339 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,483 in Phoenix and $2,808 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Trane 5TWV8X48A1 the same as the American Standard 5A6V8X48A1?

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 5TWV8X48A1?

ENERGY STAR lists 144 certified combinations for this outdoor unit. The highest-rated ones use 5PX*D008AS3, 5PX*D010AS3, 5PX*DD10AS3.

4-ton central heat pump · 18 TruComfort Variable Speed Heat Pump

Trane 5TWV8X48A1

Very good cooling efficiency and below average heating efficiency for a 4-ton central heat pump, and certified for cold climates.

Ranks #82 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,380 a year to run in a mixed climate like Atlanta.

SEER2: 18.1 Cooling efficiency over a season
Very good · beats 71%
HSPF2: 8.5 Heating efficiency over a season
Below average · beats 38%
EER2: 10.0 Cooling efficiency on a 95°F day
Below average · beats 10%
Heat at 5°F: 38,500 BTU/h77% of its 47°F output
Very good · beats 76%

A good fit if…

You want low cooling bills - its SEER2 beats 71% of central heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 38,500 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 144 certified pairings.

Think twice if…

You mainly need heat - its HSPF2 is below average for central heat pumps.

Calculate my running cost

Details

Specifications4 ton, R-454B

General
Brand	Trane
Also sold as	American Standard
Outdoor unit model	5TWV8X48A1
Series	18 TruComfort Variable Speed Heat Pump
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	October 11, 2024
Last certified	September 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.1 (range 18.1)
EER2Efficiency at 95°F outdoors	10.0-11.2
Cooling capacity	43,500-47,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.5
Capacity at 47°F	44,500-47,000 BTU/h
Capacity at 17°F	41,500-43,000 BTU/h
Capacity at 5°F	34,000-38,500 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.09-2.20
ENERGY STAR cold climate	Yes

Heating output as it gets colder77% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 5PX*D008AS3 at the standard test temperatures, in BTU/h:

Certified matchups144 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 144 are shown. 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.
5PX*D008AS3 · cold climate	S9V2C080U5PSC+LRP	18.1	10.0	8.5	35,200	215864875
5PX*D008AS3 · cold climate	S9V2C100U4VSB+LRP	18.1	10.0	8.5	35,200	215864877
5PX*D008AS3 · cold climate	S8V2C100M5PCB	18.1	10.0	8.5	35,200	215864879
5PX*D010AS3 · cold climate	S8V2C080M5PCB	18.1	10.5	8.5	34,600	215864881
5PX*D010AS3 · cold climate	L8V1C100U5VSB+LRP	18.1	10.5	8.5	34,600	215864883
5PX*D010AS3 · cold climate	*UHMD120CCV5+LRP	18.1	10.5	8.5	34,600	215864885
5PX*D010AS3 · cold climate	S8V2C080M5PDB	18.1	10.5	8.5	34,600	215864887
5PX*D010AS3 · cold climate	S9V2C100U5PSC+LRP	18.1	10.5	8.5	34,800	215864889
5PX*D010AS3 · cold climate	S9V2C100U4VSB+LRP	18.1	10.5	8.5	34,800	215864891
5PX*D010AS3 · cold climate	S9V2C080U5PSC+LRP	18.1	10.5	8.5	34,800	215864893
5PX*D010AS3 · cold climate	S8V2D120M5PDB	18.1	10.5	8.5	35,000	215864895
5PX*D010AS3 · cold climate	S8V2D120M5PCB	18.1	10.5	8.5	35,000	215864897
5PX*D010AS3 · cold climate	S8V2C100M5PDB	18.1	10.5	8.5	34,800	215864899
5PX*D010AS3 · cold climate	S8V2C100M5PCB	18.1	10.5	8.5	34,800	215864901
5PX*DD10AS3 · cold climate	*DHMC100CCV4+LRP	18.1	10.0	8.5	34,800	215864903
5PX*DD10AS3 · cold climate	S9V2C100D4VSB+LRP	18.1	10.0	8.5	34,600	215864905
5PX*DD10AS3 · cold climate	S8V2D120M5PDB	18.1	10.0	8.5	34,800	215864907
5PX*DD10AS3 · cold climate	S9V2C100D5PSC+LRP	18.1	10.0	8.5	34,600	215864909
5PX*DD10AS3 · cold climate	S8V2C100M5PDB	18.1	10.0	8.5	34,800	215864911
5PX*DD10AS3 · cold climate	S8V2C100M5PCB	18.1	10.0	8.5	34,800	215864913
5PX*DD10AS3 · cold climate	S8V2C080M5PDB	18.1	10.0	8.5	34,800	215864915
5PX*DD10AS3 · cold climate	S8V2C080M5PCB	18.1	10.0	8.5	34,800	215864917
5PX*DD10AS3 · cold climate	S8V2D120M5PCB	18.1	10.0	8.5	34,800	215864919
5TXCC007AS3 · cold climate	L8V1C100U5VSB+LRP	18.1	10.5	8.5	35,200	215864921
5TXCC007AS3 · cold climate	S9V2C100U5PSC+LRP	18.1	10.0	8.5	35,200	215864923
5TXCC007AS3 · cold climate	S9V2C100U4VSB+LRP	18.1	10.0	8.5	35,200	215864925
5TXCC007AS3 · cold climate	S9V2C080U5PSC+LRP	18.1	10.0	8.5	35,200	215864927
5TXCC007AS3 · cold climate	S8V2C100M5PDB	18.1	10.0	8.5	35,600	215864929
5TXCC007AS3 · cold climate	S8V2C100M5PCB	18.1	10.0	8.5	35,600	215864931
5TXCC007AS3 · cold climate	S8V2C080M5PDB	18.1	10.0	8.5	35,200	215864933
5TXCC007AS3 · cold climate	S8V2C080M5PCB	18.1	10.0	8.5	35,200	215864935
5TXCC007AS3 · cold climate	*UHMC100CCV4+LRP	18.1	10.5	8.5	35,000	215864937
5TXCC009AS3 · cold climate	S9V2C100U4VSB+LRP	18.1	10.5	8.5	34,800	215864939
5TXCC009AS3 · cold climate	S8V2C100M5PDB	18.1	10.0	8.5	35,000	215864941
5TXCC009AS3 · cold climate	S8V2C100M5PCB	18.1	10.0	8.5	35,000	215864943
5PX*C007AS3 · cold climate	*UHMC100CCV4+LRP	18.1	10.5	8.5	35,000	215864645
5PX*C007AS3 · cold climate	L8V1C100U5VSB+LRP	18.1	10.5	8.5	35,200	215864647
5PX*C007AS3 · cold climate	S9V2C100U5PSC+LRP	18.1	10.0	8.5	35,400	215864649
5PX*C007AS3 · cold climate	S9V2C100U4VSB+LRP	18.1	10.0	8.5	35,400	215864651
5PX*C007AS3 · cold climate	S9V2C080U5PSC+LRP	18.1	10.0	8.5	35,400	215864653
5PX*C007AS3 · cold climate	S8V2C100M5PDB	18.1	10.0	8.5	35,400	215864655
5PX*C007AS3 · cold climate	S8V2C100M5PCB	18.1	10.0	8.5	35,400	215864657
5PX*C007AS3 · cold climate	S8V2C080M5PDB	18.1	10.0	8.5	35,200	215864659
5PX*C007AS3 · cold climate	S8V2C080M5PCB	18.1	10.0	8.5	35,400	215864661
5TXCB006AS3 · cold climate	L8V1B080U4VSB+LRP	18.1	10.0	8.5	35,400	215864663
5TXCB006AS3 · cold climate	S9V2B080U4VSB+LRP	18.1	10.0	8.5	35,400	215864665
5TXCB006AS3 · cold climate	S9V2B080U4PSC+LRP	18.1	10.0	8.5	35,400	215864667
5TXCB006AS3 · cold climate	S9V2B060U4PSC+LRP	18.1	10.0	8.5	35,400	215864669
5TXCB006AS3 · cold climate	S8V2B080M4PDB	18.1	10.0	8.5	35,400	215864671
5TXCB006AS3 · cold climate	S8V2B080M4PCB	18.1	10.0	8.5	35,400	215864673
5TXCB006AS3 · cold climate	S8V2B060M4PDB	18.1	10.0	8.5	35,400	215864675
5TXCB006AS3 · cold climate	S8V2B060M4PCB	18.1	10.0	8.5	35,400	215864677
5PX*B006AS3 · cold climate	S9V2B080U4VSB+LRP	18.1	10.0	8.5	35,400	215864811
5PX*B006AS3 · cold climate	S9V2B080U4PSC+LRP	18.1	10.0	8.5	35,400	215864813
5PX*B006AS3 · cold climate	S9V2B060U4PSC+LRP	18.1	10.0	8.5	35,400	215864815
5PX*B006AS3 · cold climate	S8V2B080M4PDB	18.1	10.0	8.5	35,200	215864817
5PX*B006AS3 · cold climate	L8V1B080U4VSB+LRP	18.1	10.0	8.5	35,200	215864819
5PX*B006AS3 · cold climate	S8V2B060M4PDB	18.1	10.0	8.5	35,400	215864821
5PX*B006AS3 · cold climate	S8V2B060M4PCB	18.1	10.0	8.5	35,400	215864823
5PX*B006AS3 · cold climate	S8V2B080M4PCB	18.1	10.0	8.5	35,200	215864825

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Trane 5TWV8X48A1: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

American Standard 5A6V8X48A1

Yearly running cost in 10 large cities$1,184-$3,339

Phoenix, AZ$1,483/yr
Miami, FL$1,184/yr
Houston, TX$1,331/yr
Atlanta, GA$1,380/yr
Los Angeles, CA$1,350/yr
New York, NY$3,339/yr
Chicago, IL$2,718/yr
Denver, CO$2,266/yr
Seattle, WA$1,398/yr
Minneapolis, MN$2,808/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 5TWV8X48A1?: The Trane 5TWV8X48A1 is rated at up to 18.1 SEER2 and 10.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Trane 5TWV8X48A1 good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,500 BTU/h at 5°F with a COP of 2.20, so it is still 2.2 times as efficient as electric resistance heat at that temperature.
How much does the Trane 5TWV8X48A1 cost to run per year?: At its rated efficiency it costs about $1,184-$3,339 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,483 in Phoenix and $2,808 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Trane 5TWV8X48A1 the same as the American Standard 5A6V8X48A1?: 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 5TWV8X48A1?: ENERGY STAR lists 144 certified combinations for this outdoor unit. The highest-rated ones use 5PX*D008AS3, 5PX*D010AS3, 5PX*DD10AS3.
What refrigerant does the Trane 5TWV8X48A1 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 $1,484/yrYou save $862/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 5TWV8X48A1

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: $1,484
Current system, per year: $2,346
You save per year: $862
Payback: 19.7 years
Net after 10 years: -$8,383

Cooling $885Heating $600Electricity used: 9,277 kWhSaved vs. a minimum-efficiency heat pump: $315

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 4 ton models

ALLIED 7HP19V60P-**A18.2 SEER2 · 9.0 HSPF2
TOSOT HP-UA60/O · cold climate18.2 SEER2 · 10.0 HSPF2
Trane/American Standard 5HCL6048A1000A · cold climate18.1 SEER2 · 8.5 HSPF2
TOSOT TU60-32WEDU · cold climate18.2 SEER2 · 10.5 HSPF2
Sure RD18AY60AJVC · cold climate18.0 SEER2 · 10.0 HSPF2
1HVAC ACIQ-60-HP32 · cold climate18.2 SEER2 · 10.5 HSPF2
Armstrong Air A7SCP18V60P-**A · cold climate18.3 SEER2 · 9.6 HSPF2
Concord 7SCP18V60P-**A · cold climate18.0 SEER2 · 9.6 HSPF2

See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 16, 2026. How we use the data.