Carrier heat pump

37MUHAQ24AA3+KSAIC0701230

Ducted split systemVariable-speed (inverter)ENERGY STAR cold-climateENERGY STAR Most Efficient (some pairings)

The Carrier 37MUHAQ24AA3+KSAIC0701230 is a ducted split system heat pump outdoor unit with a rated cooling capacity of 25,000 BTU/h (about 2 tons) and a variable-speed (inverter) compressor running on R-454B refrigerant. ENERGY STAR lists 557 certified indoor-unit pairings for it. In cold weather it still delivers 20,600 BTU/h at 5°F — 80% of its 47°F output, above the 76% median across the 308 models we track (better than 58% of them). Its HSPF2 of 9.5 is higher than 61% of models in our database, and its best certified SEER2 of 18 beats 53%.

Our take in 30 seconds

Best for: mixed climates with occasional hard freezes

Strengths

  • Variable-speed compressor: quieter, steadier temperatures and better humidity control
  • Uses newer, lower-impact R-454B refrigerant
  • Also sold under 9 other badges, so you can compare more quotes for the same unit

Good to know

  • No notable drawbacks in the certified data.
Est. yearly cost
$1,118
U.S. average rates
SEER2
15.2–18
Cooling efficiency
HSPF2
9.5
Top 39% heating efficiency
Heat kept at 5°F
80%
Median is 76%
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Running-cost calculator

Pre-filled with EIA prices · edit any field
Estimated annual cost
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Heating
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Cooling
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Uses the base certified SEER2 (15.2) and HSPF2 (9.5). Assumes the unit is correctly sized. How we calculate.

Heating capacity as it gets colder

A heat pump's output falls as outdoor temperature drops. This is the certified heat output of the Carrier 37MUHAQ24AA3+KSAIC0701230 at the three ENERGY STAR test temperatures (cooling capacity is 25,000 BTU/h for reference).

47°F
25,800 BTU/h
17°F
18,700 BTU/h
5°F
20,600 BTU/h

Retention at 17°F: 72% · at 5°F: 80%. Learn how to use these numbers in our cold-climate guide.

Estimated running cost in every state

Same unit, very different bills: from about $668 a year in Louisiana to $2,479 in Maine, driven by local electricity prices and how much heating or cooling the climate needs. Click a column to sort.

StatePriceHeatingCoolingTotal / yr
Louisiana12.87¢$245$423$668
Washington14.63¢$675$84$760
Florida14.99¢$183$592$775
Mississippi14.43¢$353$427$780
Nevada12.72¢$415$377$791
Tennessee13.42¢$510$287$797
Oregon15.92¢$692$118$810
Arizona15.05¢$286$545$831
North Carolina14.95¢$528$320$847
Kentucky13.80¢$600$250$849
Arkansas14.37¢$507$355$862
Utah13.31¢$687$197$884
South Carolina15.76¢$471$415$886
Georgia15.90¢$475$418$893
Texas15.91¢$389$523$912
Idaho13.37¢$763$154$916
Alabama16.33¢$488$430$918
Oklahoma14.82¢$563$366$929
New Mexico16.51¢$673$272$944
Nebraska13.54¢$772$200$973
West Virginia16.31¢$797$215$1,012
Missouri16.02¢$740$290$1,029
Kansas15.47¢$756$280$1,036
Virginia17.64¢$719$319$1,038
Wyoming14.43¢$980$119$1,098
Colorado17.17¢$933$198$1,130
North Dakota13.31¢$1,048$99$1,147
Indiana17.02¢$924$238$1,162
Delaware18.70¢$863$308$1,171
Montana15.57¢$1,057$115$1,172
South Dakota15.15¢$1,029$162$1,191
California29.75¢$727$489$1,216
Iowa17.06¢$1,066$210$1,276
Ohio19.38¢$1,053$255$1,308
Maryland21.40¢$988$352$1,340
Illinois19.32¢$1,102$254$1,356
Minnesota17.20¢$1,261$156$1,417
Pennsylvania21.77¢$1,182$286$1,469
Wisconsin19.41¢$1,318$192$1,509
New Jersey24.61¢$1,203$364$1,567
District of Columbia25.98¢$1,129$470$1,599
Michigan22.99¢$1,498$227$1,725
Connecticut24.51¢$1,464$262$1,726
Vermont23.84¢$1,683$176$1,860
Rhode Island28.18¢$1,684$278$1,962
New York28.65¢$1,712$306$2,018
Hawaii47.18¢$64$2,018$2,082
New Hampshire27.64¢$1,877$227$2,104
Massachusetts30.48¢$1,904$301$2,205
Alaska29.41¢$2,396$48$2,445
Maine32.11¢$2,267$211$2,479
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Same equipment sold under other brands

These listings share the same certifying manufacturer (Carrier Corporation) and identical certified capacities and efficiency ratings, so they are almost certainly the same hardware with a different badge. If you get quotes for any of them, you are comparing installation price and warranty, not equipment. How rebadging works.

  • Bryant 37MUHAQ24AA3+KSAIC0701230
  • Airquest D5CUHAH24AAK+KSAIC0701230
  • Arcoaire D5CUHAH24AAK+KSAIC0701230
  • Comfortmaker D5CUHAH24AAK+KSAIC0701230

Plus 5 more identical listings in the ENERGY STAR database.

Similar-size alternatives

Other ducted split system units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Carrier 37MUHAQ24AA3+KSAIC0701230 at U.S.-average rates.

ModelCooling BTU/hSEER2HSPF25°F keptEst. yearly cost
Carrier 27VNA324A*030*23,80018–2310.582%$1,044 (−$73)Compare
Rheem RP19AY24AJVC22,80020–211081%$925 (−$193)Compare
Trane 5TWR7024A124,00015.2–17.11179%$907 (−$211)Compare
Trane 5TWX7024A124,00015.2–181179%$907 (−$211)Compare
Bryant 37MUHAQ24AA324,00016–18.710.586%$991 (−$126)Compare
ACiQ ACIQ-24-HPD24,00016–18.610.583%$1,019 (−$99)Compare

Full specifications

BrandCarrier
Outdoor model37MUHAQ24AA3+KSAIC0701230
Certified byCarrier Corporation
Product typeDucted split system
CompressorVariable-speed (inverter)
RefrigerantR-454B
Cooling capacity25,000 BTU/h
Nominal size2 tons
SEER2 (certified range)15.2 – 18
EER2 (best)11
HSPF2 (best)9.5
Heating capacity @ 47°F25,800 BTU/h
Heating capacity @ 17°F18,700 BTU/h
Heating capacity @ 5°F20,600 BTU/h
COP @ 5°F2.06
ENERGY STAR cold-climateYes
Certified indoor pairings557
Latest certification2026-06

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), retrieved November 7, 2026. Capacities and HSPF2 are the highest values across certified pairings; confirm your exact system's AHRI reference number with your installer.

Frequently asked questions

How much does the Carrier 37MUHAQ24AA3+KSAIC0701230 cost to run per year?

At the U.S. average residential electricity price of 18.16¢/kWh and typical national heating and cooling hours, we estimate about $1,118 per year ($789 heating, $329 cooling). It ranges from about $668 in Louisiana to $2,479 in Maine.

Does the Carrier 37MUHAQ24AA3+KSAIC0701230 work in cold weather?

Yes. It is ENERGY STAR cold-climate certified and delivers 20,600 BTU/h at 5°F, 80% of its 47°F capacity, with a COP of 2.06 at 5°F.

What size is the Carrier 37MUHAQ24AA3+KSAIC0701230?

It is rated at 25,000 BTU/h of cooling, roughly 2 tons, and 25,800 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.

Is the Carrier 37MUHAQ24AA3+KSAIC0701230 the same as the Bryant 37MUHAQ24AA3+KSAIC0701230?

Very likely. Both are certified by Carrier Corporation with identical capacities and efficiency ratings in the ENERGY STAR database, which indicates the same equipment sold under different brands.

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