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      12,000 BTU window air conditioner

      Frigidaire Gallery GHWW125TF1

      Very good efficiency for its size: a CEER of 16.0 ranks #3 of 34 12,000 BTU window air conditioners.

      It cools a room of about 450-550 sq ft, draws about 750 watts and costs about $101 a year to run at typical U.S. use and prices.

      CEER
      16.0 Combined efficiency, higher is better
      Very good · beats 82%
      Cooling
      12,000 BTU/hFor about 450-550 sq ft
      Energy use
      563 kWh/yr47% less than the federal minimum
      Unit size
      19.2" wide 13.5" high, 22" deep, 58 lb

      A good fit if…

      • You want low bills - its CEER beats 82% of 12,000 BTU window air conditioners.
      • You want to plug it into an ordinary outlet - it runs on 115 V.
      • You want the very top tier - it meets the ENERGY STAR Most Efficient criteria.

      Think twice if…

      • You also need heat - it cools only.

      Calculate my running costCheck the size for my room

      Details

      Specifications12,000 BTU, 115 V
      General
      BrandFrigidaire Gallery
      Model numberGHWW125TF1
      TypeWindow
      DesignStandard box
      HeatingNo, cooling only
      CompressorVariable speed (inverter)
      Voltage115 V (standard outlet)
      RefrigerantR-32 (GWP 675)
      Support bracket includedNo
      On the market sinceSeptember 4, 2026
      Last certifiedSeptember 4, 2026
      Performance
      Cooling capacity12,000 BTU/h
      CEERCombined energy efficiency ratio, includes standby power16.0
      Yearly energy useENERGY STAR test: 750 hours563 kWh
      Better than federal minimum47% less energy
      ENERGY STAR Most EfficientYes
      Size
      Width × height × depth19.2" W × 13.5" H × 22" D
      Weight58 lb
      How it compares with 33 other 12,000 BTU window units#3 of 34
      • CEER (class median 15.0)16.0, tied with 7 others
      • Yearly cost vs. class median ($108)$7 less
      • Width 19.2" (class median 20.7")narrower than 70%
      • Weight 58 lb (class median 59 lb)lighter than 55%
      • Rank among 13 similar designs#1

      Compared with the other ENERGY STAR certified 12,000 BTU window units. Yearly cost at 750 hours and 18.0¢/kWh.

      Questions6
      How many square feet does the Frigidaire Gallery GHWW125TF1 cool?
      At 12,000 BTU/h it suits a room of about 450 to 550 sq ft with normal sun and two people, following the ENERGY STAR sizing guide. In a heavily shaded room that stretches to about 495-605 sq ft; in a very sunny one it shrinks to 405-495 sq ft. A kitchen needs 4,000 BTU more.
      How many watts and amps does the Frigidaire Gallery GHWW125TF1 use?
      About 750 watts at full power (12,000 BTU/h divided by its CEER of 16.0), which is 6.5 amps at 115 V. That is 50 W less than the typical unit in its class (800 W), or $7 a year cheaper to run at 18.0¢/kWh. Its inverter compressor slows down instead of cycling, so real use is usually lower. Its CEER beats 71% of the 34 units in the class.
      Can the Frigidaire Gallery GHWW125TF1 run on a standard outlet?
      Yes. It runs on 115 V and draws about 6.5 A, well inside a standard 15 A outlet, but do not share the circuit with a space heater, microwave or other big load. 12% of certified units in this class need 230 V, so a 115 V model is the easy case.
      What are the dimensions of the Frigidaire Gallery GHWW125TF1, and will it fit my window?
      19.2" W × 13.5" H × 22" D, 58 lb. It is narrower than 70% of its 33 competitors and lighter than 55% of them. The window must be wider than 19.2"; the side panels fill the remaining gap.
      Can the Frigidaire Gallery GHWW125TF1 also heat the room?
      No, it only cools. If you also need heat, 5 certified units in this class can do both; see the list of air conditioners with heat.
      Is the Frigidaire Gallery GHWW125TF1 worth buying to replace an old air conditioner?
      An old unit of the same size at 9 CEER would cost about $180 a year to run at 750 hours and 18.0¢/kWh; this one costs about $101, so it saves roughly $79 a year.

      Running cost calculator

      Pre-filled with this model. Pick your state and how many hours you run it, or see the yearly cost in every state.

      1. The air conditioner Frigidaire Gallery GHWW125TF1
      2. How you use it
      Per year
      $158
      Per month of use
      $29
      Per day
      $0.96
      Per hour
      12.0¢
      Power draw
      750 W

      Electricity used: 990 kWh a yearAn old 9 CEER unit of the same size would cost $282

      Power draw is capacity divided by CEER, which already includes standby power. Inverter units often run below full power, so real use can be lower. Electricity prices: U.S. EIA residential averages (12 months to July 2026). Days a year start from your state's cooling degree days (NOAA 1991-2020 normals).

      Closest alternatives

      Units with a similar CEER in the same class, and what sets each one apart from the Frigidaire Gallery GHWW125TF1.

      ModelCEERCompared with this one
      Midea MAW12U1KWT16.0same CEER, U-shaped
      Midea MAW12U1KWT-M16.0same CEER, saddle design
      Whirlpool WHAW121CWX16.0same CEER, 0.6" wider, 6 lb lighter, U-shaped
      Hisense AWUS1227TW16.0same CEER, 1.1" wider, U-shaped
      Midea MWEUWA-12CRFN8-BCP016.0same CEER, 8 lb lighter

      See all 34 12,000 BTU window air conditioners, ranked

      Source: ENERGY STAR Certified Room Air Conditioners (U.S. EPA), certification of September 4, 2026. How we use the data.