What is the SEER2 rating of the Tempstar T5H6S24*K*AAA?

The Tempstar T5H6S24*K*AAA is rated at up to 16.5 SEER2 and 13.0 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 193 certified matchups SEER2 ranges from 15.2-16.5.

Is the Tempstar T5H6S24*K*AAA 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 2-ton model.

How much does the Tempstar T5H6S24*K*AAA cost to run per year?

At its rated efficiency it costs about $676-$1,705 a year in electricity in large U.S. cities, depending on climate and local rates - for example $819 in Phoenix and $1,413 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Tempstar T5H6S24*K*AAA the same as the Kenmore (C,H,T)5H6S24*K*AAA?

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 Tempstar T5H6S24*K*AAA?

ENERGY STAR lists 193 certified combinations for this outdoor unit. The highest-rated ones use FMA5X30**AL, EA*5X37M21A, EVM5X31M17A.

2-ton central heat pump · MAINLINE 16 SEER2 HP

Tempstar T5H6S24KAAA

Average cooling efficiency and below average heating efficiency for a 2-ton central heat pump, but not rated for cold climates.

Ranks #262 of 331 2 ton central heat pumps for cooling efficiency, and costs about $723 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: 13.0 Cooling efficiency on a 95°F day
Very good · beats 89%
Heat at 5°F: 11,900 BTU/h49% of its 47°F output
Very good · beats 83%

A good fit if…

You want a choice of indoor units - 193 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

Specifications2 ton, R-454B

General
Brand	Tempstar
Also sold as	Kenmore
Outdoor unit model	T5H6S24KAAA
Series	MAINLINE 16 SEER2 HP
Type	Central heat pump
Nominal size	2 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	January 1, 2024
Last certified	July 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.5 (range 15.2-16.5)
EER2Efficiency at 95°F outdoors	11.7-13.0
Cooling capacity	22,200-24,400 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.5
Capacity at 47°F	21,600-24,000 BTU/h
Capacity at 17°F	14,200-15,200 BTU/h
Capacity at 5°F	10,800-11,900 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.98-2.26
ENERGY STAR cold climate	No

Heating output as it gets colder49% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FMA5X30**AL at the standard test temperatures, in BTU/h:

Certified matchups193 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 193 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.
FMA5X30**AL	-	16.5	13.0	8.5	11,600	214424130
EA*5X37M21A	97VTN1002120A	16.0	12.5	8.0	11,500	215802392
EA*5X37M21A	97VTN1002122A	16.0	13.0	8.0	11,400	215802400
EVM5X31M17A	80MSU0601716A	16.0	12.0	7.8	11,200	214161404
EVM5X32M17A	92MSN0801716A	16.0	12.0	7.8	11,200	214161572
EVM5X32M17A	80MS(N,L)0901714A	16.0	12.0	7.8	11,200	214161452
EVM5X32M17A	80VSL0901716B	16.0	12.0	7.8	11,400	214161484
EVM5X32M17A	80MSU0601716A	16.0	12.5	7.8	11,300	214161508
EVD5X31M17A	80MSU0601716A	16.0	12.5	7.8	11,200	214161644
EVD5X37M21A	80MS(N,L)0902116A	16.0	12.0	7.8	11,200	214161676
EA*5X25M17A	80MSU0401712A	16.0	12.5	7.8	11,300	214160908
EA*5X25M17A	80MSU0601716A	16.0	12.0	7.8	11,200	214160916
EA*5X25M17A	80CTL0701412B	16.0	12.5	7.8	11,400	214160932
EVD5X38M17A	80VSL0701716B	16.0	12.0	7.8	11,300	214161868
EVD5X38M17A	80VSL0901716B	16.0	12.5	7.8	11,400	214161876
EVD5X38M17A	80MS(N,L)0701712A	16.0	12.5	7.8	11,400	214161828
EVD5X38M17A	80MS(N,L)0701716A	16.0	12.0	7.8	11,400	214161836
EVD5X38M17A	80MS(N,L)0901714A	16.0	12.5	7.8	11,200	214161844
EA*5X37M21A	80CSU0401712A	16.0	12.5	7.8	11,200	214160996
EA*5X37M21A	80CSU0802120A	16.0	12.5	7.8	11,300	214161004
EVD5X31M17A	80VSL0901716B	16.0	12.0	7.8	11,300	214159417
EA*5X37M21A	95CSU1002122B	16.0	12.5	7.8	11,600	214161180
EA*5X37M21A	80CTL0902120B	16.0	12.5	7.8	11,500	214161148
EA*5X37M21A	80VTL1102122B	16.0	12.0	7.8	11,500	214161164
EA*5X37M21A	97CMN1002122A	16.0	12.5	7.8	11,200	214161188
EA*5X37M21A	97CMN0802120B	16.0	12.5	7.8	11,500	214161196
EA*5X37M21A	97CMN1002122B	16.0	12.5	7.8	11,500	214161204
EA*5X37M21A	95MSU1002120A	16.0	12.0	7.8	11,500	214161300
EA*5X37M21A	96CTN1002122A	16.0	12.5	7.8	11,200	214161316
EA*5X37M21A	96CTN0802120B	16.0	12.5	7.8	11,500	214161324
EA*5X37M21A	96CTN1002122B	16.0	12.5	7.8	11,500	214161332
EVD5X38M17A	80MSU0601716A	16.0	12.5	7.8	11,300	214161900
EVD5X38M17A	80VTL0701716B	16.0	12.0	7.8	11,400	214161932
EVD5X38M17A	92MSN0601714A	16.0	12.0	7.8	11,400	214161964
FM(C,U)5Z30**AL	-	16.0	12.5	7.8	11,100	215829006
FM(C,U)5Z36**AL	-	16.0	12.5	7.8	11,100	215829014
EA5X37M21A+WALLCON	80CTL0902120B	16.0	12.5	7.8	11,500	217006699
EA5X37M21A+WALLCON	95CSU1002122B	16.0	12.5	7.8	11,600	217006715
EA5X25M17A+WALLCON	80CTL0701412B	16.0	12.5	7.8	11,400	217006683
EA5X37M21A+WALLCON	97CMN0802120B	16.0	12.5	7.8	11,500	217006723
EA5X37M21A+WALLCON	97CMN1002122B	16.0	12.5	7.8	11,500	217006731
EA5X37M21A+WALLCON	96CTN1002122B	16.0	12.5	7.8	11,500	217006739
EA5X37M21A+WALLCON	96CTN0802120B	16.0	12.5	7.8	11,500	215802328
FM(C,U)5Z24**AL	-	15.5	12.0	8.0	11,300	215828998
FEVA0036**+NAVA53601CK	-	15.5	12.0	8.0	11,300	217051558
EVM5X32M17A	80MS(N,L)0701712A	15.5	12.0	7.8	11,400	214161436
EVM5X32M17A	80MS(N,L)0701716A	15.5	12.0	7.8	11,400	214161444
EA*5X25M17A	97CMN0801714B	15.5	12.0	7.8	11,500	214157472
EVM5X32M17A	80VTL0701716B	15.5	12.0	7.8	11,400	214161540
EVM5X32M17A	95MSU0601716A	15.5	12.0	7.8	11,400	214161580
EA*5X37M17A	97CMN0801714B	15.5	12.0	7.8	11,300	214158176
EA*5X37M17A	95CSU0601716B	15.5	12.0	7.8	11,300	214158144
EA*5X37M17A	97CMN0601714B	15.5	12.0	7.8	11,400	214158168
EVM5X32M17A	80VSL0701716B	15.5	12.0	7.8	11,300	214161476
EA*5X37M17A	80MSU0401712A	15.5	12.5	7.8	11,300	214158056
EA*5X37M21A	96CTN0801714B	15.5	12.0	7.8	11,600	214158856
EA*5X37M17A	80CTL0701412B	15.5	12.0	7.8	11,200	214158080
EA*5X37M17A	80CTL0701716B	15.5	12.0	7.8	11,300	214158088
EA*5X37M17A	80CTL0901716B	15.5	12.0	7.8	11,300	214158096
EA*5X37M21A	OLV112A16A	15.5	12.0	7.8	11,500	214158928

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Tempstar T5H6S24*K*AAA: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Kenmore (C,H,T)5H6S24*K*AAA

Yearly running cost in 10 large cities$676-$1,705

Phoenix, AZ$819/yr
Miami, FL$676/yr
Houston, TX$734/yr
Atlanta, GA$723/yr
Los Angeles, CA$700/yr
New York, NY$1,705/yr
Chicago, IL$1,380/yr
Denver, CO$1,143/yr
Seattle, WA$700/yr
Minneapolis, MN$1,413/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 Tempstar T5H6S24*K*AAA?: The Tempstar T5H6S24*K*AAA is rated at up to 16.5 SEER2 and 13.0 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 193 certified matchups SEER2 ranges from 15.2-16.5.
Is the Tempstar T5H6S24*K*AAA 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 2-ton model.
How much does the Tempstar T5H6S24*K*AAA cost to run per year?: At its rated efficiency it costs about $676-$1,705 a year in electricity in large U.S. cities, depending on climate and local rates - for example $819 in Phoenix and $1,413 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Tempstar T5H6S24*K*AAA the same as the Kenmore (C,H,T)5H6S24*K*AAA?: 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 Tempstar T5H6S24*K*AAA?: ENERGY STAR lists 193 certified combinations for this outdoor unit. The highest-rated ones use FMA5X30**AL, EA*5X37M21A, EVM5X31M17A.
What refrigerant does the Tempstar T5H6S24*K*AAA 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 $806/yrYou save $402/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 Tempstar T5H6S24*K*AAA

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: $806
Current system, per year: $1,208
You save per year: $402
Payback: 22.4 years
Net after 10 years: -$4,980

Cooling $508Heating $298Electricity used: 5,035 kWhSaved vs. a minimum-efficiency heat pump: $118

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 ton models

WeatherMaker PH5SAN524**AB16.5 SEER2 · 8.5 HSPF2
Heil H5H6S24*K*AAA16.5 SEER2 · 8.5 HSPF2
Samsung AC024FCUDCG · cold climate16.5 SEER2 · 8.2 HSPF2
Heil B5H6S24*K*AAA16.5 SEER2 · 8.5 HSPF2
Grandaire W4H7T24*K*AAA16.5 SEER2 · 8.1 HSPF2
Grandaire W5H5S24*K*AAA16.5 SEER2 · 8.5 HSPF2
Samsung AC024BXUPCH · cold climate16.5 SEER2 · 8.1 HSPF2
Carrier GH5SAN524**AA16.5 SEER2 · 8.5 HSPF2

See all 331 2 ton central heat pumps, ranked

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