Bryant heat pump

37MARAQ18AA3

Mini-split / multi-splitVariable-speed (inverter)ENERGY STAR cold-climateENERGY STAR Most Efficient (some pairings)

The Bryant 37MARAQ18AA3 is a mini-split / multi-split heat pump outdoor unit with a rated cooling capacity of 18,000 BTU/h (about 1.5 tons) and a variable-speed (inverter) compressor running on R-454B refrigerant. ENERGY STAR lists 8 certified indoor-unit pairings for it. In cold weather it still delivers 14,200 BTU/h at 5°F — 71% of its 47°F output, close to the 76% median across the 308 models we track (better than 39% of them). Its HSPF2 of 13.5 is higher than 99% of models in our database, and its best certified SEER2 of 23.9 beats 91%.

Our take in 30 seconds

Best for: mixed climates with occasional hard freezes

Strengths

  • Heating efficiency (HSPF2 13.5) beats 99% of models
  • Cooling efficiency up to SEER2 23.9, better than 91% of models
  • Variable-speed compressor: quieter, steadier temperatures and better humidity control
  • Uses newer, lower-impact R-454B refrigerant

Good to know

  • Efficiency depends on the indoor unit: SEER2 ranges 20–23.9, so ask which pairing you're quoted
Est. yearly cost
$610
U.S. average rates
SEER2
20–23.9
Cooling efficiency
HSPF2
13.5
Top 1% heating efficiency
Heat kept at 5°F
71%
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 (20) and HSPF2 (13.5). 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 Bryant 37MARAQ18AA3 at the three ENERGY STAR test temperatures (cooling capacity is 18,000 BTU/h for reference).

47°F
20,000 BTU/h
17°F
15,000 BTU/h
5°F
14,200 BTU/h

Retention at 17°F: 75% · at 5°F: 71%. Learn how to use these numbers in our cold-climate guide.

Estimated running cost in every state

Same unit, very different bills: from about $365 a year in Louisiana to $1,352 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¢$133$232$365
Washington14.63¢$368$46$415
Florida14.99¢$100$324$424
Mississippi14.43¢$192$234$426
Nevada12.72¢$226$206$432
Tennessee13.42¢$278$157$435
Oregon15.92¢$377$64$442
Arizona15.05¢$156$298$454
North Carolina14.95¢$288$175$463
Kentucky13.80¢$327$137$464
Arkansas14.37¢$277$194$471
Utah13.31¢$375$108$482
South Carolina15.76¢$257$227$484
Georgia15.90¢$259$229$488
Texas15.91¢$212$286$499
Idaho13.37¢$416$84$500
Alabama16.33¢$266$235$501
Oklahoma14.82¢$307$200$507
New Mexico16.51¢$367$149$515
Nebraska13.54¢$421$110$531
West Virginia16.31¢$435$117$552
Missouri16.02¢$403$159$562
Kansas15.47¢$413$153$566
Virginia17.64¢$392$175$567
Wyoming14.43¢$534$65$599
Colorado17.17¢$509$108$617
North Dakota13.31¢$572$54$626
Indiana17.02¢$504$130$634
Delaware18.70¢$471$168$639
Montana15.57¢$577$63$640
South Dakota15.15¢$561$89$650
California29.75¢$397$268$664
Iowa17.06¢$581$115$696
Ohio19.38¢$574$140$714
Maryland21.40¢$539$193$732
Illinois19.32¢$601$139$740
Minnesota17.20¢$688$85$773
Pennsylvania21.77¢$645$157$802
Wisconsin19.41¢$719$105$824
New Jersey24.61¢$656$199$856
District of Columbia25.98¢$616$257$873
Michigan22.99¢$817$124$942
Connecticut24.51¢$799$143$942
Vermont23.84¢$918$97$1,015
Rhode Island28.18¢$918$152$1,071
New York28.65¢$934$168$1,101
Hawaii47.18¢$35$1,104$1,139
New Hampshire27.64¢$1,024$124$1,148
Massachusetts30.48¢$1,039$165$1,203
Alaska29.41¢$1,307$26$1,334
Maine32.11¢$1,237$116$1,352
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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.

  • Carrier 37MARAQ18AA3
  • Midea 37MARAQ18AA3
  • Payne 37MARAQ18AA3
  • Weathermaker 37MARAQ18AA3

Plus 11 more identical listings in the ENERGY STAR database.

Similar-size alternatives

Other mini-split / multi-split units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Bryant 37MARAQ18AA3 at U.S.-average rates.

ModelCooling BTU/hSEER2HSPF25°F keptEst. yearly cost
Bryant 37MAHAQ18AA318,00018–21.512.490%$668 (+$58)Compare
Senville SENA-18HF-OG18,00018–21.412.390%$672 (+$62)Compare
Fujitsu AOUH18KUAS118,00018.6–26.311.482%$744 (+$134)Compare
Fujitsu AOUH18LUAS118,00018.6–23.511.295%$660 (+$50)Compare
Senville SENA/18HF/OQ18,00018–21.511.395%$688 (+$78)Compare
Payne 38MARBQ18AA318,00018–21.511.390%$714 (+$104)Compare

Full specifications

BrandBryant
Outdoor model37MARAQ18AA3
Certified byCarrier Corporation
Product typeMini-split / multi-split
CompressorVariable-speed (inverter)
RefrigerantR-454B
Cooling capacity18,000 BTU/h
Nominal size1.5 tons
SEER2 (certified range)20 – 23.9
EER2 (best)13.3
HSPF2 (best)13.5
Heating capacity @ 47°F20,000 BTU/h
Heating capacity @ 17°F15,000 BTU/h
Heating capacity @ 5°F14,200 BTU/h
COP @ 5°F2.4
ENERGY STAR cold-climateYes
Certified indoor pairings8
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 Bryant 37MARAQ18AA3 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 $610 per year ($430 heating, $180 cooling). It ranges from about $365 in Louisiana to $1,352 in Maine.

Does the Bryant 37MARAQ18AA3 work in cold weather?

Yes. It is ENERGY STAR cold-climate certified and delivers 14,200 BTU/h at 5°F, 71% of its 47°F capacity, with a COP of 2.4 at 5°F.

What size is the Bryant 37MARAQ18AA3?

It is rated at 18,000 BTU/h of cooling, roughly 1.5 tons, and 20,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.

Is the Bryant 37MARAQ18AA3 the same as the Carrier 37MARAQ18AA3?

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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