What is the SEER2 rating of the Trane 5TWV8X36A1?

The Trane 5TWV8X36A1 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; across its 201 certified matchups SEER2 ranges from 17.1-18.1.

Is the Trane 5TWV8X36A1 good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 26,000 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 5TWV8X36A1 cost to run per year?

At its rated efficiency it costs about $844-$2,425 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,064 in Phoenix and $2,044 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Trane 5TWV8X36A1 the same as the American Standard 5A6V8X36A1?

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 5TWV8X36A1?

ENERGY STAR lists 201 certified combinations for this outdoor unit. The highest-rated ones use 5PX*BD04AS3, 5TXCB004AS3, 5TXCB006AS3.

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

Trane 5TWV8X36A1

Very good cooling efficiency and below average heating efficiency for a 2.5-ton central heat pump, and certified for cold climates.

Ranks #40 of 199 2.5 ton central heat pumps for cooling efficiency, and costs about $998 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: 26,000 BTU/h76% 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 26,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 201 certified pairings.

Think twice if…

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

Calculate my running cost

Details

Specifications2.5 ton, R-454B

General
Brand	Trane
Also sold as	American Standard
Outdoor unit model	5TWV8X36A1
Series	18 TruComfort Variable Speed Heat Pump
Type	Central heat pump
Nominal size	2.5 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	June 12, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.1 (range 17.1-18.1)
EER2Efficiency at 95°F outdoors	9.8-11.0
Cooling capacity	31,400-33,600 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.5
Capacity at 47°F	32,200-34,600 BTU/h
Capacity at 17°F	30,400-32,200 BTU/h
Capacity at 5°F	24,800-26,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.90-2.20
ENERGY STAR cold climate	Yes

Heating output as it gets colder76% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 5PX*BD04AS3 at the standard test temperatures, in BTU/h:

Certified matchups201 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 201 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*BD04AS3 · cold climate	S8V2A040M3PCB	18.1	10.0	8.5	25,800	215864515
5TXCB004AS3 · cold climate	S9V2B080U4VSB+LRP	18.1	10.0	8.5	25,600	215864591
5TXCB004AS3 · cold climate	S9V2B080U4PSC+LRP	18.1	10.0	8.5	25,600	215864593
5TXCB006AS3 · cold climate	*UHMB060CCV3+LRP	18.1	10.0	8.5	25,800	215864595
5TXCB006AS3 · cold climate	*UHMB080CCV3+LRP	18.1	10.0	8.5	25,600	215864597
5TXCB006AS3 · cold climate	S9V2B080U4VSB+LRP	18.1	10.0	8.5	25,600	215864599
5TXCB006AS3 · cold climate	S9V2B080U4PSC+LRP	18.1	10.0	8.5	25,600	215864601
5TXCB006AS3 · cold climate	S9V2B060U4PSC+LRP	18.1	10.0	8.5	25,800	215864603
5TXCB006AS3 · cold climate	S9V2B060U3VSB+LRP	18.1	10.0	8.5	25,800	215864605
5TXCB006AS3 · cold climate	S9V2B040U3VSB+LRP	18.1	10.0	8.5	25,800	215864607
5TXCB006AS3 · cold climate	S9V2B040U3PSC+LRP	18.1	10.0	8.5	25,800	215864609
5TXCB006AS3 · cold climate	S8V2B080M4PDB	18.1	10.0	8.5	25,800	215864611
5TXCB006AS3 · cold climate	S8V2B080M4PCB	18.1	10.0	8.5	25,800	215864613
5TXCB006AS3 · cold climate	L8V1A040U3VSB+LRP	18.1	10.0	8.5	25,800	215864615
5TXCB006AS3 · cold climate	L8V1A060U3VSB+LRP	18.1	10.0	8.5	25,800	215864617
5TXCB006AS3 · cold climate	L8V1B080U4VSB+LRP	18.1	10.0	8.5	25,800	215864619
5TXCB006AS3 · cold climate	S8V2A040M3PCB	18.1	10.0	8.5	25,600	215864621
5TXCB006AS3 · cold climate	S8V2A040M3PDB	18.1	10.0	8.5	25,600	215864623
5TXCB006AS3 · cold climate	S8V2B060M4PCB	18.1	10.0	8.5	25,600	215864625
5TXCB006AS3 · cold climate	S8V2B060M4PDB	18.1	10.0	8.5	25,600	215864627
5TXCC005AS3 · cold climate	S9V2C080U5PSC+LRP	18.1	10.0	8.5	25,400	215864629
5TXCC005AS3 · cold climate	S9V2C100U4VSB+LRP	18.1	10.0	8.5	25,600	215864631
5TXCC005AS3 · cold climate	S8V2C100M5PDB	18.1	10.0	8.5	25,400	215864633
5TXCC005AS3 · cold climate	S8V2C100M5PCB	18.1	10.0	8.5	25,600	215864635
5TXCC005AS3 · cold climate	S9V2C100U5PSC+LRP	18.1	10.0	8.5	25,400	215864637
5TXCC005AS3 · cold climate	S8V2C080M5PCB	18.1	10.0	8.5	25,600	215864639
5TXCC005AS3 · cold climate	*UHMC100CCV4+LRP	18.1	10.0	8.5	25,200	215864641
5TXCC005AS3 · cold climate	S8V2C080M5PDB	18.1	10.0	8.5	25,600	215864643
5TXCB004AS3 · cold climate	*UHMB060CCV3+LRP	18.1	10.0	8.5	25,800	215864587
5TXCB004AS3 · cold climate	S9V2B060U4PSC+LRP	18.1	10.0	8.5	25,600	215864589
5PX*B004AS3 · cold climate	*UHMB060CCV3+LRP	18.1	10.0	8.5	25,800	215864473
5PX*B004AS3 · cold climate	*UHMB080CCV3+LRP	18.1	10.0	8.5	25,600	215864475
5PX*B004AS3 · cold climate	S9V2B080U4VSB+LRP	18.1	10.0	8.5	25,600	215864477
5PX*B004AS3 · cold climate	S9V2B080U4PSC+LRP	18.1	10.0	8.5	25,600	215864479
5PX*B004AS3 · cold climate	S9V2B060U4PSC+LRP	18.1	10.0	8.5	25,600	215864481
5PX*B004AS3 · cold climate	S9V2B060U3VSB+LRP	18.1	10.0	8.5	25,600	215864483
5PX*B004AS3 · cold climate	S9V2B040U3VSB+LRP	18.1	10.0	8.5	25,400	215864485
5PX*B004AS3 · cold climate	S9V2B040U3PSC+LRP	18.1	10.0	8.5	25,600	215864487
5PX*B004AS3 · cold climate	S8V2B080M4PDB	18.1	10.0	8.5	25,600	215864489
5PX*B004AS3 · cold climate	S8V2B080M4PCB	18.1	10.0	8.5	25,600	215864491
5PX*B004AS3 · cold climate	S8V2B060M4PDB	18.1	10.0	8.5	25,400	215864493
5PX*B004AS3 · cold climate	S8V2B060M4PCB	18.1	10.0	8.5	25,400	215864495
5PX*B004AS3 · cold climate	L8V1B080U4VSB+LRP	18.1	10.0	8.5	25,600	215864497
5PX*BD04AS3 · cold climate	S9V2B080D4PSC+LRP	18.1	10.0	8.5	25,800	215864499
5PX*BD04AS3 · cold climate	S9V2B060D3VSB+LRP	18.1	10.0	8.5	25,800	215864501
5PX*BD04AS3 · cold climate	S9V2B060D3PSC+LRP	18.1	10.0	8.5	25,800	215864503
5PX*BD04AS3 · cold climate	S9V2B040D3PSC+LRP	18.1	10.0	8.5	25,800	215864505
5PX*BD04AS3 · cold climate	S8V2B080M4PDB	18.1	10.0	8.5	26,000	215864507
5PX*BD04AS3 · cold climate	S8V2B080M4PCB	18.1	10.0	8.5	26,000	215864509
5PX*BD04AS3 · cold climate	S9V2B080D4VSB+LRP	18.1	10.0	8.5	25,800	215864511
5PX*BD04AS3 · cold climate	S8V2B060M4PCB	18.1	10.0	8.5	26,000	215864513
5PX*BD04AS3 · cold climate	*DHMB080CCV3+LRP	18.1	10.0	8.5	25,800	215864517
5PX*BD04AS3 · cold climate	*DHMB060CCV3+LRP	18.1	10.0	8.5	25,800	215864519
5PX*BD04AS3 · cold climate	S8V2B060M4PDB	18.1	10.0	8.5	26,000	215864521
5PX*C005AS3 · cold climate	*UHMC100CCV4+LRP	18.1	10.0	8.5	25,200	215864523
5PX*C005AS3 · cold climate	S8V2C080M5PCB	18.1	10.0	8.5	25,400	215864525
5PX*C005AS3 · cold climate	S8V2C080M5PDB	18.1	10.0	8.5	25,400	215864527
5PX*C005AS3 · cold climate	S8V2C100M5PCB	18.1	10.0	8.5	25,400	215864529
5PX*C005AS3 · cold climate	S8V2C100M5PDB	18.1	10.0	8.5	25,400	215864531
5PX*C005AS3 · cold climate	S9V2C080U5PSC+LRP	18.1	10.0	8.5	25,400	215864533

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Trane 5TWV8X36A1: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

American Standard 5A6V8X36A1

Yearly running cost in 10 large cities$844-$2,425

Phoenix, AZ$1,064/yr
Miami, FL$844/yr
Houston, TX$954/yr
Atlanta, GA$998/yr
Los Angeles, CA$979/yr
New York, NY$2,425/yr
Chicago, IL$1,977/yr
Denver, CO$1,650/yr
Seattle, WA$1,019/yr
Minneapolis, MN$2,044/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 5TWV8X36A1?: The Trane 5TWV8X36A1 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; across its 201 certified matchups SEER2 ranges from 17.1-18.1.
Is the Trane 5TWV8X36A1 good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 26,000 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 5TWV8X36A1 cost to run per year?: At its rated efficiency it costs about $844-$2,425 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,064 in Phoenix and $2,044 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Trane 5TWV8X36A1 the same as the American Standard 5A6V8X36A1?: 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 5TWV8X36A1?: ENERGY STAR lists 201 certified combinations for this outdoor unit. The highest-rated ones use 5PX*BD04AS3, 5TXCB004AS3, 5TXCB006AS3.
What refrigerant does the Trane 5TWV8X36A1 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 $1,068/yrYou save $616/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 5TWV8X36A1

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: $1,068
Current system, per year: $1,684
You save per year: $616
Payback: 19.5 years
Net after 10 years: -$5,838

Cooling $630Heating $437Electricity used: 6,672 kWhSaved vs. a minimum-efficiency heat pump: $226

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 2.5 ton models

MDV MOX430-30HFN8-M3 · cold climate18.1 SEER2 · 9.0 HSPF2
Jetson HP-30ODU-001 · cold climate18.0 SEER2 · 10.0 HSPF2
GREE FXE30HP230V1R32AO18.2 SEER2 · 8.3 HSPF2
Kinghome KU36UXO · cold climate18.0 SEER2 · 10.0 HSPF2
AC Pro AOD30U-30HFN1-MR0(X) · cold climate18.2 SEER2 · 8.8 HSPF2
TOSOT TU36-R32WEDU · cold climate18.0 SEER2 · 10.0 HSPF2
Multi MFG HHS-30HD-A · cold climate18.2 SEER2 · 9.0 HSPF2
Friedrich WFPU18Z363C · cold climate18.0 SEER2 · 9.5 HSPF2

See all 199 2.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 12, 2026. How we use the data.