What is the SEER2 rating of the Trane 5TWR5048A1?

The Trane 5TWR5048A1 is rated at up to 16.0 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 167 certified matchups SEER2 ranges from 15.2-16.0.

Is the Trane 5TWR5048A1 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 5TWR5048A1 cost to run per year?

At its rated efficiency it costs about $1,289-$3,245 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,561 in Phoenix and $2,690 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Trane 5TWR5048A1 the same as the American Standard 5A6H5048A1?

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 5TWR5048A1?

ENERGY STAR lists 167 certified combinations for this outdoor unit. The highest-rated ones use 5TEM6D06AV41+TDR+TSTAT, 5TEM6D07AV51+TDR+TSTAT, 5TEMCD07AV51+TDR+TSTAT.

3.5-ton central heat pump · 15 Single-Stage Heat Pump

Trane 5TWR5048A1

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

Ranks #64 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,377 a year to run in a mixed climate like Atlanta.

SEER2: 16.0 Cooling efficiency over a season
Below average · beats 26%
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: 22,600 BTU/h52% of its 47°F output
Very good · beats 88%

A good fit if…

You want a choice of indoor units - 167 certified pairings.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
Cooling cost matters most - its SEER2 is below average for central heat pumps.
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	5TWR5048A1
Series	15 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	January 25, 2024
Last certified	June 3, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.0 (range 15.2-16.0)
EER2Efficiency at 95°F outdoors	11.7-12.0
Cooling capacity	43,000-45,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.5
Capacity at 47°F	41,500-44,000 BTU/h
Capacity at 17°F	27,600-29,400 BTU/h
Capacity at 5°F	21,200-22,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00-2.30
ENERGY STAR cold climate	No

Heating output as it gets colder52% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 5TEM6D06AV41+TDR+TSTAT at the standard test temperatures, in BTU/h:

Certified matchups167 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 167 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.
5TEM6D06AV41+TDR+TSTAT	-	16.0	12.0	8.5	22,600	214078977
5TEM6D07AV51+TDR+TSTAT	-	16.0	12.0	8.5	22,600	214078979
5TEMCD07AV51+TDR+TSTAT	-	16.0	12.0	8.5	22,200	215863954
5TXCD010AS3+TSTAT	S8X1D120M5PSC	16.0	12.0	8.1	22,200	214079049
5TXCD010AS3+TSTAT	S8X1D120M5PTC	16.0	12.0	8.1	22,200	214079051
5TXCD010AS3+TSTAT+P0V0D000M50SD	-	16.0	12.0	8.1	21,800	214079105
5TXCD010AS3+TSTAT	S8V2D120M5PCA	16.0	12.0	8.1	22,000	214079123
5TXCD010AS3+TSTAT	S8V2D120M5PCB	16.0	12.0	8.1	22,200	214079125
5TXCD010AS3+TSTAT	S8V2D120M5PDA	16.0	12.0	8.1	22,000	214079127
5TXCD010AS3+TSTAT	S8V2D120M5PDB	16.0	12.0	8.1	22,200	214079129
5TXCD010AS3+TSTAT	S8X2D120M5PSC	16.0	12.0	8.1	22,200	214079061
5TXCD010AS3+TSTAT	S8X2D120M5PTC	16.0	12.0	8.1	22,200	214079063
5TXCD010AS3+TSTAT	S9V2D120U5PSB	16.0	12.0	8.1	22,000	214079077
5TXCD010AS3+TSTAT	S9V2D120U5PSC	16.0	12.0	8.1	22,000	214079079
5TXCD010AS3+TSTAT	S9V2D120U5VSA	16.0	12.0	8.1	22,000	214079081
5TXCD010AS3+TSTAT	S9V2D120U5VSB	16.0	12.0	8.1	22,000	214079083
5TXCD008AS3+TSTAT+P0V0D000M50SD	-	16.0	12.0	8.1	22,400	215566702
5PX*D010AS3+TSTAT	S9V2D120U5VSB	16.0	12.0	8.1	22,200	215574176
5PX*C009AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	8.1	22,200	215569246
5PX*C009AS3+TSTAT	S9V2C100U4VSB	16.0	11.7	8.1	22,600	215569270
5PX*C009AS3+TSTAT	S9V2C100U5PSC	16.0	12.0	8.1	22,400	215569274
5TXCC009AS3+TSTAT	S9V2C100U4VSB	16.0	11.7	8.1	22,600	215566612
5TXCC009AS3+TSTAT	S9V2C100U5PSC	16.0	12.0	8.1	22,400	215566614
5PX*D008AS3+TSTAT+P0V0D000M50SD	-	16.0	12.0	8.1	22,400	215569412
5PX*D010AS3+TSTAT	S9X1C080U5PSB	16.0	12.0	8.1	21,800	215569416
5PX*D010AS3+TSTAT	S8V2D120M5PCB	16.0	12.0	8.1	22,400	215569418
5PX*D010AS3+TSTAT	S9X1D120U5PSB	16.0	12.0	8.1	22,200	215569420
5PX*D010AS3+TSTAT	S9X2C080U5PSB	16.0	12.0	8.1	21,800	215569422
5PX*D010AS3+TSTAT	S9X2D120U5PSB	16.0	12.0	8.1	22,200	215569426
5PX*D010AS3+TSTAT+P0V0D000M50SD	-	16.0	12.0	8.1	22,000	215569438
5PX*D010AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	8.1	21,400	215569440
5PX*D010AS3+TSTAT	S9V2D120U5PSC	16.0	12.0	8.1	22,200	215569452
5PX*D010AS3+TSTAT	S8V2D120M5PDB	16.0	12.0	8.1	22,400	215569454
5PX*D010AS3+TSTAT	S8X1D120M5PSC	16.0	12.0	8.1	22,200	215569464
5PX*D010AS3+TSTAT	S8X1D120M5PTC	16.0	12.0	8.1	22,200	215569466
5PX*D010AS3+TSTAT	S8X2D120M5PSC	16.0	12.0	8.1	22,200	215569476
5TXCC009AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	8.1	22,200	215566638
5PX*D010AS3+TSTAT	S8X2D120M5PTC	16.0	12.0	8.1	22,200	215569478
5PX*DD10AS3+TSTAT+P0V0D000M50SD	-	16.0	12.0	8.1	22,000	215569506
5PX*C009AS3+TSTAT	S9V2C080U5VSB	16.0	12.0	8.1	22,200	215831550
5PX*C009AS3+TSTAT	S9V2C100U5VSB	16.0	12.0	8.1	22,200	215831552
5TXCC009AS3+TSTAT	S9V2C100U5VSB	16.0	12.0	8.1	22,200	215831576
5TXCC009AS3+TSTAT	S9V2C080U5VSB	16.0	12.0	8.1	22,200	215831578
5TEMCD06AV41+TDR+TSTAT	-	16.0	12.0	8.1	21,600	215863952
5TAM5D06AC41+TSTAT	-	16.0	11.7	8.1	22,200	216021961
5TXCD008AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	8.0	22,000	215566704
5PX*C009AS3+TSTAT	L8V1C100U5VSB	16.0	12.0	8.0	22,000	215569244
5PX*C009AS3+TSTAT	S9V2C080U5PSC	16.0	12.0	8.0	22,200	215569268
5PX*D008AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	8.0	22,000	215569390
5TXCC009AS3+TSTAT	S9V2C080U5PSC	16.0	12.0	8.0	22,200	215566620
5PX*D010AS3+TSTAT	S8V2C100M5PDB	16.0	12.0	8.0	21,800	215569430
5PX*D010AS3+TSTAT	S8V2C100M5PCB	16.0	12.0	8.0	21,800	215569432
5PX*D010AS3+TSTAT	S8V2C080M5PDB	16.0	12.0	8.0	21,600	215569434
5PX*D010AS3+TSTAT	S8V2C080M5PCB	16.0	12.0	8.0	21,600	215569436
5PX*D010AS3+TSTAT	L8V1C100U5VSB	16.0	12.0	8.0	21,600	215569446
5TXCC009AS3+TSTAT	L8V1C100U5VSB	16.0	12.0	8.0	22,000	215566642
5PX*D010AS3+TSTAT	S9V2C080U5PSC	16.0	12.0	8.0	21,800	215569480
5PX*D010AS3+TSTAT	S9V2C100U4VSB	16.0	12.0	8.0	21,800	215569482
5TXCD010AS3+TSTAT+P0V0C000M50SD	-	16.0	12.0	7.8	21,200	214079103
5TXCD010AS3+TSTAT	L8V1C100U5VSB	16.0	12.0	7.8	21,400	214079101

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Trane 5TWR5048A1: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

American Standard 5A6H5048A1

Yearly running cost in 10 large cities$1,289-$3,245

Phoenix, AZ$1,561/yr
Miami, FL$1,289/yr
Houston, TX$1,398/yr
Atlanta, GA$1,377/yr
Los Angeles, CA$1,332/yr
New York, NY$3,245/yr
Chicago, IL$2,626/yr
Denver, CO$2,176/yr
Seattle, WA$1,331/yr
Minneapolis, MN$2,690/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 5TWR5048A1?: The Trane 5TWR5048A1 is rated at up to 16.0 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 167 certified matchups SEER2 ranges from 15.2-16.0.
Is the Trane 5TWR5048A1 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 5TWR5048A1 cost to run per year?: At its rated efficiency it costs about $1,289-$3,245 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,561 in Phoenix and $2,690 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Trane 5TWR5048A1 the same as the American Standard 5A6H5048A1?: 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 5TWR5048A1?: ENERGY STAR lists 167 certified combinations for this outdoor unit. The highest-rated ones use 5TEM6D06AV41+TDR+TSTAT, 5TEM6D07AV51+TDR+TSTAT, 5TEMCD07AV51+TDR+TSTAT.
What refrigerant does the Trane 5TWR5048A1 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 $1,535/yrYou save $718/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 5TWR5048A1

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: $1,535
Current system, per year: $2,252
You save per year: $718
Payback: 23.0 years
Net after 10 years: -$9,322

Cooling $968Heating $567Electricity used: 9,591 kWhSaved vs. a minimum-efficiency heat pump: $191

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

Friedrich RD16AY48AJVC · cold climate16.0 SEER2 · 8.5 HSPF2
MRCOOL MVP-48-HP-C-230A00-O · cold climate16.0 SEER2 · 9.0 HSPF2
Innovair SOV48H2BA · cold climate16.0 SEER2 · 9.0 HSPF2
American Standard 5HPL5048A1 · cold climate16.0 SEER2 · 8.1 HSPF2
DIRECT AIR DIRM4-48CS19-OU · cold climate16.0 SEER2 · 9.0 HSPF2
American Standard N5HP5042A116.0 SEER2 · 8.1 HSPF2
AC Pro SPHP-Y-V048BB · cold climate16.0 SEER2 · 9.0 HSPF2
American Standard N5HP5048A116.0 SEER2 · 8.1 HSPF2

See all 138 3.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 3, 2026. How we use the data.