What is the SEER2 rating of the Bryant 37MUHAQ48AA3+KSAIC0701230?

The Bryant 37MUHAQ48AA3+KSAIC0701230 is rated at up to 15.5 SEER2 and 8.5 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Bryant 37MUHAQ48AA3+KSAIC0701230 good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 46,000 BTU/h at 5°F with a COP of 1.76, so it is still 1.8 times as efficient as electric resistance heat at that temperature.

How much does the Bryant 37MUHAQ48AA3+KSAIC0701230 cost to run per year?

At its rated efficiency it costs about $1,408-$3,636 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,718 in Phoenix and $3,024 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 Bryant 37MUHAQ48AA3+KSAIC0701230?

ENERGY STAR lists 11 certified combinations for this outdoor unit. The highest-rated ones use CAA**6124AM, FG5ANBD60L, FT5ANBD60L.

4-ton central heat pump · Crossover Heat Pump

Bryant 37MUHAQ48AA3+KSAIC0701230

Below average cooling and heating efficiency for a 4-ton central heat pump, and certified for cold climates.

Ranks #277 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,534 a year to run in a mixed climate like Atlanta.

SEER2: 15.5 Cooling efficiency over a season
Below average · beats 15%
HSPF2: 8.5 Heating efficiency over a season
Below average · beats 38%
EER2: 8.5 Cooling efficiency on a 95°F day
Below average · beats 1%
Heat at 5°F: 46,000 BTU/h92% of its 47°F output
Below average · beats 2%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 46,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 11 certified pairings.

Think twice if…

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.

Calculate my running cost

Details

Specifications4 ton, R-454B

General
Brand	Bryant
Also sold as	Carrier, PAYNE HEATING AND COOLING, WeatherMaker
Outdoor unit model	37MUHAQ48AA3+KSAIC0701230
Series	Crossover Heat Pump
Type	Central heat pump
Nominal size	4 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	June 27, 2024
Last certified	October 7, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.5 (range 15.5)
EER2Efficiency at 95°F outdoors	8.5-9.0
Cooling capacity	46,500-47,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.1-8.5
Capacity at 47°F	48,500-50,000 BTU/h
Capacity at 17°F	34,200-35,400 BTU/h
Capacity at 5°F	44,000-46,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.75-1.76
ENERGY STAR cold climate	Yes

Heating output as it gets colder92% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with CAA**6124AM at the standard test temperatures, in BTU/h:

Certified matchups11 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.
CAA**6124AM · cold climate	58SUB080M21*20	15.5	8.5	8.5	46,000	218475958
CAA**6124AM · cold climate	83SB60080M21**	15.5	8.5	8.5	46,000	218478645
CAA**6124AM · cold climate	PG80MSUA60080C**	15.5	8.5	8.5	46,000	218495577
CAA**6124AM · cold climate	PG80MSUA60080C**	15.5	8.5	8.5	46,000	218816524
FG5ANBD60L · cold climate	-	15.5	9.0	8.1	44,000	218477287
FT5ANBD60L · cold climate	-	15.5	9.0	8.1	44,000	218477286
PF5TNBD60L · cold climate	-	15.5	9.0	8.1	44,000	218485646
FG5ANBD60L · cold climate	-	15.5	9.0	8.1	44,000	218485644
FT5ANBD60L · cold climate	-	15.5	9.0	8.1	44,000	218485642
PF5TNBD60L · cold climate	-	15.5	9.0	8.1	44,000	218497679
PF5TNBD60L · cold climate	-	15.5	9.0	8.1	44,000	218816726

Yearly running cost in 10 large cities$1,408-$3,636

Phoenix, AZ$1,718/yr
Miami, FL$1,408/yr
Houston, TX$1,539/yr
Atlanta, GA$1,534/yr
Los Angeles, CA$1,487/yr
New York, NY$3,636/yr
Chicago, IL$2,946/yr
Denver, CO$2,445/yr
Seattle, WA$1,499/yr
Minneapolis, MN$3,024/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 Bryant 37MUHAQ48AA3+KSAIC0701230?: The Bryant 37MUHAQ48AA3+KSAIC0701230 is rated at up to 15.5 SEER2 and 8.5 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Bryant 37MUHAQ48AA3+KSAIC0701230 good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 46,000 BTU/h at 5°F with a COP of 1.76, so it is still 1.8 times as efficient as electric resistance heat at that temperature.
How much does the Bryant 37MUHAQ48AA3+KSAIC0701230 cost to run per year?: At its rated efficiency it costs about $1,408-$3,636 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,718 in Phoenix and $3,024 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 Bryant 37MUHAQ48AA3+KSAIC0701230?: ENERGY STAR lists 11 certified combinations for this outdoor unit. The highest-rated ones use CAA**6124AM, FG5ANBD60L, FT5ANBD60L.
What refrigerant does the Bryant 37MUHAQ48AA3+KSAIC0701230 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 $1,695/yrYou save $735/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 Bryant 37MUHAQ48AA3+KSAIC0701230

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: $1,695
Current system, per year: $2,430
You save per year: $735
Payback: 23.8 years
Net after 10 years: -$10,147

Cooling $1,056Heating $639Electricity used: 10,594 kWhSaved vs. a minimum-efficiency heat pump: $174

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.

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See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of October 7, 2026. How we use the data.