What is the SEER2 rating of the Trane 5TWR6042A1?

The Trane 5TWR6042A1 is rated at up to 16.5 SEER2 and 12.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 248 certified matchups SEER2 ranges from 15.2-16.5.

Is the Trane 5TWR6042A1 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 3.5-ton model.

How much does the Trane 5TWR6042A1 cost to run per year?

At its rated efficiency it costs about $1,138-$2,957 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,391 in Phoenix and $2,461 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Trane 5TWR6042A1 the same as the American Standard 5A6H6042A1?

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 5TWR6042A1?

ENERGY STAR lists 248 certified combinations for this outdoor unit. The highest-rated ones use 5TXCD010AS3+TSTAT+P0V0D000M50SD, 5TEMCD07AV51+TDR+TSTAT, 5PX*D010AS3+TSTAT+P0V0D000M50SD.

3.5-ton central heat pump · 16 Single-Stage Heat Pump

Trane 5TWR6042A1

Average cooling efficiency and below average heating efficiency for a 3.5-ton central heat pump, but not rated for cold climates.

Ranks #54 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,245 a year to run in a mixed climate like Atlanta.

SEER2: 16.5 Cooling efficiency over a season
Average · beats 40%
HSPF2: 8.5 Heating efficiency over a season
Below average · beats 38%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 19,900 BTU/h48% of its 47°F output
Excellent · beats 90%

A good fit if…

You want a choice of indoor units - 248 certified pairings.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
You mainly need heat - its HSPF2 is below average for central heat pumps.
Comfort and noise matter - a single-stage compressor runs only full-on or off.

Calculate my running cost

Details

Specifications3.5 ton, R-454B

General
Brand	Trane
Also sold as	American Standard
Outdoor unit model	5TWR6042A1
Series	16 Single-Stage Heat Pump
Type	Central heat pump
Nominal size	3.5 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	February 16, 2026
Last certified	September 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.5 (range 15.2-16.5)
EER2Efficiency at 95°F outdoors	11.7-12.0
Cooling capacity	37,600-41,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.5
Capacity at 47°F	37,600-40,500 BTU/h
Capacity at 17°F	24,600-26,200 BTU/h
Capacity at 5°F	18,700-19,900 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.12-2.32
ENERGY STAR cold climate	No

Heating output as it gets colder48% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 5TXCD010AS3+TSTAT+P0V0D000M50SD at the standard test temperatures, in BTU/h:

Certified matchups248 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 248 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.
5TXCD010AS3+TSTAT+P0V0D000M50SD	-	16.5	12.0	8.1	18,900	218108750
5TEMCD07AV51+TDR+TSTAT	-	16.5	12.0	8.1	18,700	218108558
5PX*D010AS3+TSTAT+P0V0D000M50SD	-	16.5	12.0	8.1	19,100	218395610
5TEMCD07BV51+TDR+TSTAT	-	16.5	12.0	8.1	18,800	218788171
5TEMCD04AV31+TDR+TSTAT	-	16.0	12.0	8.5	18,900	218108552
5TXCD010AS3+TSTAT	S9X2D120U5PSB	16.0	12.0	8.1	19,200	218108766
5TXCD010AS3+TSTAT	S8X1D120M5PTC	16.0	12.0	8.1	19,100	218108764
5TXCD010AS3+TSTAT	S8X2D120M5PSC	16.0	12.0	8.1	19,100	218108762
5TXCD010AS3+TSTAT	S8X2D120M5PTC	16.0	12.0	8.1	19,100	218108760
5TXCD010AS3+TSTAT	S9V2D120U5VSB	16.0	12.0	8.1	19,100	218108758
5TXCD010AS3+TSTAT	S9X1D120U5PSB	16.0	12.0	8.1	19,200	218108756
5TXCD010AS3+TSTAT	S8X1D120M5PSC	16.0	12.0	8.1	19,100	218108754
5TXCD010AS3+TSTAT	*UHMD120CCV5	16.0	12.0	8.1	19,000	218108752
5TXCD010AS3+TSTAT	S8V2D120M5PCB	16.0	12.0	8.1	19,100	218108748
5TXCD010AS3+TSTAT	S8V2D120M5PDB	16.0	12.0	8.1	19,100	218108746
5TXCD008AS3+TSTAT	S8X2D120M5PSC	16.0	12.0	8.1	19,200	218108744
5TXCD008AS3+TSTAT	S8X2D120M5PTC	16.0	12.0	8.1	19,200	218108742
5TXCD008AS3+TSTAT	S9V2D120U5VSB	16.0	12.0	8.1	19,200	218108740
5TXCD008AS3+TSTAT	S9X1D120U5PSB	16.0	12.0	8.1	19,300	218108738
5TXCD008AS3+TSTAT	S8X1D120M5PTC	16.0	12.0	8.1	19,200	218108736
5TXCD008AS3+TSTAT	*UHMD120CCV5	16.0	12.0	8.1	19,200	218108734
5TXCD008AS3+TSTAT+P0V0D000M50SD	-	16.0	12.0	8.1	19,000	218108732
5TXCD008AS3+TSTAT	S8V2D120M5PCB	16.0	12.0	8.1	19,300	218108730
5TXCD008AS3+TSTAT	S8V2D120M5PDB	16.0	12.0	8.1	19,300	218108728
5TXCD008AS3+TSTAT	S8X1D120M5PSC	16.0	12.0	8.1	19,200	218108726
5TXCD008AS3+TSTAT	S9X2D120U5PSB	16.0	12.0	8.1	19,300	218108724
5TXCC009AS3+TSTAT	S8X2C080M5PTC	16.0	12.0	8.1	19,200	218108722
5TXCC009AS3+TSTAT	S8X2C080M5PSC	16.0	12.0	8.1	19,200	218108720
5TXCC009AS3+TSTAT	S8X1C100M5PTC	16.0	12.0	8.1	19,300	218108718
5TXCC009AS3+TSTAT	S8X1C100M5PSC	16.0	12.0	8.1	19,300	218108716
5TXCC009AS3+TSTAT	S8X1C080M5PTC	16.0	12.0	8.1	19,200	218108714
5TXCC009AS3+TSTAT	S8X1C080M5PSC	16.0	12.0	8.1	19,200	218108712
5TXCC009AS3+TSTAT	S8V2C100M5PDB	16.0	12.0	8.1	19,100	218108710
5TXCC009AS3+TSTAT	S8V2C100M5PCB	16.0	12.0	8.1	19,100	218108708
5TXCC009AS3+TSTAT	S8V2C080M5PDB	16.0	12.0	8.1	19,300	218108706
5TXCC009AS3+TSTAT	S8V2C080M5PCB	16.0	12.0	8.1	19,300	218108704
5TXCC009AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	8.1	19,000	218108702
5TXCC009AS3+TSTAT	L8V1C100U5VSB	16.0	12.0	8.1	19,000	218108700
5TXCC009AS3+TSTAT	*UHMC100CCV4	16.0	12.0	8.1	18,900	218108698
5TXCC009AS3+TSTAT	S9X2C100U5PSB	16.0	12.0	8.1	19,200	218108696
5TXCC009AS3+TSTAT	S9X2C080U5PSB	16.0	12.0	8.1	19,100	218108694
5TXCC009AS3+TSTAT	S9X1C100U5PSB	16.0	12.0	8.1	19,200	218108692
5TXCC009AS3+TSTAT	S9X1C080U5PSB	16.0	12.0	8.1	19,100	218108690
5TXCC009AS3+TSTAT	S9V2C100U5VSB	16.0	12.0	8.1	19,000	218108688
5TXCC009AS3+TSTAT	S9V2C100U4VSB	16.0	12.0	8.1	19,000	218108686
5TXCC009AS3+TSTAT	S9V2C080U5VSB	16.0	12.0	8.1	19,100	218108684
5TXCC009AS3+TSTAT	S8X2C100M5PTC	16.0	12.0	8.1	19,300	218108682
5TXCC009AS3+TSTAT	S8X2C100M5PSC	16.0	12.0	8.1	19,300	218108680
5TXCC007AS3+TSTAT	S8X2C080M5PSC	16.0	12.0	8.1	19,300	218108678
5TXCC007AS3+TSTAT	L8V1C100U5VSB	16.0	12.0	8.1	19,200	218108676
5TXCC007AS3+TSTAT	S8X1C100M5PTC	16.0	12.0	8.1	19,400	218108672
5TXCC007AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	8.1	19,000	218108670
5TXCC007AS3+TSTAT	S8X2C080M5PTC	16.0	12.0	8.1	19,300	218108668
5TXCC007AS3+TSTAT	S8X2C100M5PSC	16.0	12.0	8.1	19,400	218108666
5TXCC007AS3+TSTAT	S8X2C100M5PTC	16.0	12.0	8.1	19,400	218108664
5TXCC007AS3+TSTAT	S9V2C080U5VSB	16.0	12.0	8.1	19,200	218108662
5TXCC007AS3+TSTAT	S8X1C100M5PSC	16.0	12.0	8.1	19,400	218108652
5TXCC007AS3+TSTAT	S8X1C080M5PTC	16.0	12.0	8.1	19,300	218108650
5TXCC007AS3+TSTAT	S8X1C080M5PSC	16.0	12.0	8.1	19,300	218108648
5TEMCD06AV41+TDR+TSTAT	-	16.0	12.0	8.1	18,800	218108556

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Trane 5TWR6042A1: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

American Standard 5A6H6042A1

Yearly running cost in 10 large cities$1,138-$2,957

Phoenix, AZ$1,391/yr
Miami, FL$1,138/yr
Houston, TX$1,246/yr
Atlanta, GA$1,245/yr
Los Angeles, CA$1,208/yr
New York, NY$2,957/yr
Chicago, IL$2,397/yr
Denver, CO$1,990/yr
Seattle, WA$1,220/yr
Minneapolis, MN$2,461/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 5TWR6042A1?: The Trane 5TWR6042A1 is rated at up to 16.5 SEER2 and 12.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 248 certified matchups SEER2 ranges from 15.2-16.5.
Is the Trane 5TWR6042A1 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 3.5-ton model.
How much does the Trane 5TWR6042A1 cost to run per year?: At its rated efficiency it costs about $1,138-$2,957 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,391 in Phoenix and $2,461 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Trane 5TWR6042A1 the same as the American Standard 5A6H6042A1?: 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 5TWR6042A1?: ENERGY STAR lists 248 certified combinations for this outdoor unit. The highest-rated ones use 5TXCD010AS3+TSTAT+P0V0D000M50SD, 5TEMCD07AV51+TDR+TSTAT, 5PX*D010AS3+TSTAT+P0V0D000M50SD.
What refrigerant does the Trane 5TWR6042A1 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 $1,374/yrYou save $681/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 5TWR6042A1

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: $1,374
Current system, per year: $2,054
You save per year: $681
Payback: 22.0 years
Net after 10 years: -$8,195

Cooling $853Heating $520Electricity used: 8,586 kWhSaved vs. a minimum-efficiency heat pump: $201

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 3.5 ton models

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Friedrich FRP17AY48AJVC · cold climate16.0 SEER2 · 9.5 HSPF2
Capella CCB1-H48A-O · cold climate16.5 SEER2 · 9.5 HSPF2
Ruud RP17AY48AJVC · cold climate16.0 SEER2 · 9.5 HSPF2
MRCOOL CENTRAL-48-HP-C-230B00-O · cold climate16.6 SEER2 · 9.5 HSPF2
Sure SP17AY48AJVC · cold climate16.0 SEER2 · 9.5 HSPF2
Thermal Zone TZID48H520ZCS · cold climate16.7 SEER2 · 9.0 HSPF2

See all 138 3.5 ton central heat pumps, ranked

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