What is the SEER2 rating of the American Standard N5HP5018A1?

The American Standard N5HP5018A1 is rated at up to 15.2 SEER2 and 12.0 EER2 for cooling and up to 8.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the American Standard N5HP5018A1 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 1.5-ton model.

How much does the American Standard N5HP5018A1 cost to run per year?

At its rated efficiency it costs about $561-$1,378 a year in electricity in large U.S. cities, depending on climate and local rates - for example $682 in Phoenix and $1,136 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 N5HP5018A1?

ENERGY STAR lists 8 certified combinations for this outdoor unit. The highest-rated ones use 5TXCB006AS3+TSTAT, 5PX*B006AS3+TSTAT.

1.5-ton central heat pump · Bronze 15

American Standard N5HP5018A1

Below average cooling and heating efficiency for a 1.5-ton central heat pump, but not rated for cold climates.

Ranks #157 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $591 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 8.0 Heating efficiency over a season
Below average · beats 12%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 8,900 BTU/h53% of its 47°F output
Average · beats 64%

A good fit if…

You want a certified 1.5-ton central heat pump at a typical efficiency level.

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

Specifications1.5 ton, R-454B

General
Brand	American Standard
Also sold as	Trane
Outdoor unit model	N5HP5018A1
Series	Bronze 15
Type	Central heat pump
Nominal size	1.5 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	May 26, 2026
Last certified	June 29, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	12.0
Cooling capacity	18,300-18,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.0
Capacity at 47°F	16,800-17,000 BTU/h
Capacity at 17°F	11,500-11,600 BTU/h
Capacity at 5°F	8,900 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.09-2.11
ENERGY STAR cold climate	No

Heating output as it gets colder53% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 5TXCB006AS3+TSTAT 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.
5TXCB006AS3+TSTAT	A952V060BD3SB	15.2	12.0	8.0	8,900	218470660
5TXCB006AS3+TSTAT	A952V040BD3SB	15.2	12.0	8.0	8,900	218470659
5PX*B006AS3+TSTAT	A952V040BD3SB	15.2	12.0	8.0	8,900	218470650
5PX*B006AS3+TSTAT	A952V060BD3SB	15.2	12.0	8.0	8,900	218470649
5TXCB006AS3+TSTAT	A952V060BD3SB	15.2	12.0	8.0	8,900	218469958
5TXCB006AS3+TSTAT	A952V040BD3SB	15.2	12.0	8.0	8,900	218469957
5PX*B006AS3+TSTAT	A952V040BD3SB	15.2	12.0	8.0	8,900	218469947
5PX*B006AS3+TSTAT	A952V060BD3SB	15.2	12.0	8.0	8,900	218469946

Yearly running cost in 10 large cities$561-$1,378

Phoenix, AZ$682/yr
Miami, FL$570/yr
Houston, TX$611/yr
Atlanta, GA$591/yr
Los Angeles, CA$569/yr
New York, NY$1,378/yr
Chicago, IL$1,112/yr
Denver, CO$920/yr
Seattle, WA$561/yr
Minneapolis, MN$1,136/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 N5HP5018A1?: The American Standard N5HP5018A1 is rated at up to 15.2 SEER2 and 12.0 EER2 for cooling and up to 8.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the American Standard N5HP5018A1 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 1.5-ton model.
How much does the American Standard N5HP5018A1 cost to run per year?: At its rated efficiency it costs about $561-$1,378 a year in electricity in large U.S. cities, depending on climate and local rates - for example $682 in Phoenix and $1,136 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 N5HP5018A1?: ENERGY STAR lists 8 certified combinations for this outdoor unit. The highest-rated ones use 5TXCB006AS3+TSTAT, 5PX*B006AS3+TSTAT.
What refrigerant does the American Standard N5HP5018A1 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 $666/yrYou save $263/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 N5HP5018A1

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: $666
Current system, per year: $929
You save per year: $263
Payback: 26.6 years
Net after 10 years: -$4,371

Cooling $428Heating $238Electricity used: 4,165 kWhSaved vs. a minimum-efficiency heat pump: $43

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 1.5 ton models

Thermal Zone TZP15AZ18AJ2N · cold climate15.2 SEER2 · 8.1 HSPF2
GE NS17H18SA4-15.2 SEER2 · 8.0 HSPF2
RunTru A5HP5018A115.2 SEER2 · 8.1 HSPF2
AC Pro SPHP-M-1018BB15.2 SEER2 · 7.8 HSPF2
Rheem WP15AY18AJ2N · cold climate15.2 SEER2 · 8.1 HSPF2
Airquest N4H5S18*K*AAA15.2 SEER2 · 7.8 HSPF2
Mainline MPP15AZ18AJ2N · cold climate15.2 SEER2 · 8.1 HSPF2
Arcoaire R4H5S18*K*AAA15.2 SEER2 · 7.8 HSPF2

See all 170 1.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 29, 2026. How we use the data.