What is the SEER2 rating of the American Standard 4A6L9048A1?

The American Standard 4A6L9048A1 is rated at up to 19.0 SEER2 and 11.7 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the American Standard 4A6L9048A1 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 4-ton model.

How much does the American Standard 4A6L9048A1 cost to run per year?

At its rated efficiency it costs about $1,210-$3,089 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,471 in Phoenix and $2,565 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Which indoor units work with the American Standard 4A6L9048A1?

ENERGY STAR lists 8 certified combinations for this outdoor unit. The highest-rated ones use 4TXCD010DS3, 4PX*DU60BS3, 4TXCD008DS3.

What refrigerant does the American Standard 4A6L9048A1 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.

4-ton central heat pump · Platinum 19

American Standard 4A6L9048A1

Very good cooling efficiency and average heating efficiency for a 4-ton central heat pump, but not rated for cold climates.

Ranks #61 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,306 a year to run in a mixed climate like Atlanta.

SEER2: 19.0 Cooling efficiency over a season
Very good · beats 85%
HSPF2: 9.0 Heating efficiency over a season
Average · beats 54%
EER2: 11.7 Cooling efficiency on a 95°F day
Average · beats 43%
Heat at 5°F: - Not reported by the maker

A good fit if…

You want low cooling bills - its SEER2 beats 85% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.

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

Specifications4 ton, R-410A

General
Brand	American Standard
Outdoor unit model	4A6L9048A1
Series	Platinum 19
Type	Central heat pump
Nominal size	4 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	December 19, 2025
Cooling
SEER2Seasonal efficiency, higher is better	19.0 (range 19.0)
EER2Efficiency at 95°F outdoors	11.7-12.0
Cooling capacity	47,000-49,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.7-9.0
Capacity at 47°F	42,000-43,500 BTU/h
Capacity at 17°F	30,600-31,800 BTU/h
Capacity at 5°F	-
COP at 5°F2.0 = twice as efficient as a space heater	-
ENERGY STAR cold climate	No

Heating output as it gets colder

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 4TXCD010DS3 at the standard test temperatures, in BTU/h:

Certified matchups8 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.
4TXCD010DS3	S8V2D120M5PCA	19.0	11.7	9.0	-	210692002
4PX*DU60BS3	S8V2D120M5PCA	19.0	11.7	9.0	-	210691993
4TXCD010DS3	P0V0D000M50SC+RP	19.0	12.0	9.0	-	206912654
4TXCD008DS3	P0V0D000M50SC+RP	19.0	12.0	9.0	-	206912652
4PX*DU60BS3	P0V0D000M50SC+RP	19.0	12.0	9.0	-	206912647
4PX*DU48BS3	P0V0D000M50SC+RP	19.0	12.0	9.0	-	206912645
4PX*DD60BS3	P0V0D000M50SC+RP	19.0	12.0	9.0	-	206912640
4PX*DU60BS3	S8V2C100M5PCA	19.0	11.7	8.7	-	210692211

Yearly running cost in 10 large cities$1,210-$3,089

Phoenix, AZ$1,471/yr
Miami, FL$1,210/yr
Houston, TX$1,318/yr
Atlanta, GA$1,306/yr
Los Angeles, CA$1,265/yr
New York, NY$3,089/yr
Chicago, IL$2,502/yr
Denver, CO$2,075/yr
Seattle, WA$1,271/yr
Minneapolis, MN$2,565/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions5

What is the SEER2 rating of the American Standard 4A6L9048A1?: The American Standard 4A6L9048A1 is rated at up to 19.0 SEER2 and 11.7 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the American Standard 4A6L9048A1 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 4-ton model.
How much does the American Standard 4A6L9048A1 cost to run per year?: At its rated efficiency it costs about $1,210-$3,089 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,471 in Phoenix and $2,565 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Which indoor units work with the American Standard 4A6L9048A1?: ENERGY STAR lists 8 certified combinations for this outdoor unit. The highest-rated ones use 4TXCD010DS3, 4PX*DU60BS3, 4TXCD008DS3.
What refrigerant does the American Standard 4A6L9048A1 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 $1,449/yrYou save $987/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 American Standard 4A6L9048A1

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: $1,449
Current system, per year: $2,437
You save per year: $987
Payback: 18.7 years
Net after 10 years: -$8,626

Cooling $908Heating $541Electricity used: 9,057 kWhSaved vs. a minimum-efficiency heat pump: $407

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

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Hisense AUWR-4824P · cold climate19.0 SEER2 · 9.0 HSPF2
Trane 5HCL5060B1 · cold climate19.0 SEER2 · 9.5 HSPF2
Multi MFG MSD-48HD-B · cold climate19.0 SEER2 · 9.0 HSPF2
TOSOT TU60-32GDU19.0 SEER2 · 9.5 HSPF2
Trane 4TWL9048A119.0 SEER2 · 9.0 HSPF2
Napoleon WSEHV4860BA1-N · cold climate19.0 SEER2 · 9.5 HSPF2
York YZV60B2119.0 SEER2 · 8.5 HSPF2

See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of December 19, 2025. How we use the data.