What is the SEER2 rating of the Tempstar B5H3V48*K*AAA?

The Tempstar B5H3V48*K*AAA is rated at up to 23.0 SEER2 and 12.5 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 648 certified matchups SEER2 ranges from 20.0-23.0.

Is the Tempstar B5H3V48*K*AAA good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 37,400 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the Tempstar B5H3V48*K*AAA cost to run per year?

At its rated efficiency it costs about $929-$3,078 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,227 in Phoenix and $2,635 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 Tempstar B5H3V48*K*AAA?

ENERGY STAR lists 648 certified combinations for this outdoor unit. The highest-rated ones use FCMA5B60L0D*+WALLCON, FCMA5B48L0C*+WALLCON, EA*5X61M24A*+WALLCON.

3.5-ton central heat pump · SmartSense 23 VS HP

Tempstar B5H3V48KAAA

Excellent cooling efficiency and very good heating efficiency for a 3.5-ton central heat pump, and certified for cold climates.

Ranks #5 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,230 a year to run in a mixed climate like Atlanta.

SEER2: 23.0 Cooling efficiency over a season
Excellent · beats 99%
HSPF2: 9.5 Heating efficiency over a season
Very good · beats 70%
EER2: 12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
Heat at 5°F: 37,400 BTU/h74% of its 47°F output
Below average · beats 39%

A good fit if…

You want low cooling bills - its SEER2 beats 99% of central heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 37,400 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 70% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications3.5 ton, R-454B

General
Brand	Tempstar
Also sold as	Kenmore, Keeprite, Day & Night, Comfortmaker, Arcoaire, Airquest, Heil, ACIQ
Outdoor unit model	B5H3V48KAAA
Series	SmartSense 23 VS HP
Type	Central heat pump
Nominal size	3.5 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	November 1, 2024
Last certified	July 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	23.0 (range 20.0-23.0)
EER2Efficiency at 95°F outdoors	10.0-12.5
Cooling capacity	43,000-46,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.0-9.5
Capacity at 47°F	48,000-49,000 BTU/h
Capacity at 17°F	39,000-40,500 BTU/h
Capacity at 5°F	35,600-37,400 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.84-2.00
ENERGY STAR cold climate	Yes

Heating output as it gets colder74% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FCMA5B60L0D*+WALLCON at the standard test temperatures, in BTU/h:

Certified matchups648 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 648 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.
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405895
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405894
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405893
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405892
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405891
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405890
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405889
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218405888
FCMA5B60L0D*+WALLCON · cold climate	-	23.0	12.5	9.5	35,600	218628755
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414887
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414886
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414885
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414884
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414883
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414882
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414881
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218414880
FCMA5B48L0C*+WALLCON · cold climate	-	22.0	12.0	9.5	36,000	218629866
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413663
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413662
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413661
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413660
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413659
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413658
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413657
EA5X61M24A+WALLCON · cold climate	97CTN1202422A	21.5	11.5	9.0	36,600	218413656
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413655
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413654
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413653
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413652
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413651
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413650
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413649
EA5X61M24A+WALLCON · cold climate	97CTN1002122A	21.5	11.0	9.0	36,800	218413648
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413639
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413638
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413637
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413636
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413635
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413634
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413633
EA5X61M24A+WALLCON · cold climate	96CTN1202422B	21.5	11.5	9.0	36,800	218413632
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413631
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413630
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413629
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413628
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413627
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413626
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413625
EA5X61M24A+WALLCON · cold climate	96CTN1002122B	21.5	11.0	9.0	36,600	218413624
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413607
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413606
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413605
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413604
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413603
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413602
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413601
EA5X61M24A+WALLCON · cold climate	97CMN1002122B	21.5	11.0	9.0	36,600	218413600
EA5X61M24A+WALLCON · cold climate	95CSU1002122B	21.5	11.5	9.0	36,600	218413583
EA5X61M24A+WALLCON · cold climate	95CSU1002122B	21.5	11.5	9.0	36,600	218413582

Yearly running cost in 10 large cities$929-$3,078

Phoenix, AZ$1,227/yr
Miami, FL$929/yr
Houston, TX$1,103/yr
Atlanta, GA$1,230/yr
Los Angeles, CA$1,222/yr
New York, NY$3,078/yr
Chicago, IL$2,526/yr
Denver, CO$2,121/yr
Seattle, WA$1,320/yr
Minneapolis, MN$2,635/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 Tempstar B5H3V48*K*AAA?: The Tempstar B5H3V48*K*AAA is rated at up to 23.0 SEER2 and 12.5 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 648 certified matchups SEER2 ranges from 20.0-23.0.
Is the Tempstar B5H3V48*K*AAA good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 37,400 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the Tempstar B5H3V48*K*AAA cost to run per year?: At its rated efficiency it costs about $929-$3,078 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,227 in Phoenix and $2,635 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 Tempstar B5H3V48*K*AAA?: ENERGY STAR lists 648 certified combinations for this outdoor unit. The highest-rated ones use FCMA5B60L0D*+WALLCON, FCMA5B48L0C*+WALLCON, EA*5X61M24A*+WALLCON.
What refrigerant does the Tempstar B5H3V48*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 $1,260/yrYou save $1,117/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 B5H3V48*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: $1,260
Current system, per year: $2,378
You save per year: $1,117
Payback: 15.2 years
Net after 10 years: -$5,829

Cooling $689Heating $572Electricity used: 7,878 kWhSaved vs. a minimum-efficiency heat pump: $571

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

Heil H5H3V48*K*AAA · cold climate23.0 SEER2 · 9.5 HSPF2
Comfortmaker C5H3V48*K*AAA · cold climate23.0 SEER2 · 9.5 HSPF2
Carrier 25VNA448A*031 · cold climate21.0 SEER2 · 9.0 HSPF2
Carrier 27VNA348A*030 · cold climate23.0 SEER2 · 9.5 HSPF2
Trane 5TWV0X48A1 · cold climate20.8 SEER2 · 10.0 HSPF2
Bryant 293VAN048**AA · cold climate23.0 SEER2 · 9.5 HSPF2
Lennox SL22KLV-048-230A · cold climate20.5 SEER2 · 9.8 HSPF2
ECOER EODA19H-4860AA · cold climate19.5 SEER2 · 9.5 HSPF2

See all 138 3.5 ton central heat pumps, ranked

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