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      12,000 BTU window air conditioner

      Midea MWEUWA-12CRFN8-BCP0

      Very good efficiency for its size: a CEER of 16.0 ranks #7 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
      19.1" wide 14.6" high, 21.8" deep, 51 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
      BrandMidea
      Model numberMWEUWA-12CRFN8-BCP0
      TypeWindow
      DesignStandard box
      HeatingNo, cooling only
      CompressorVariable speed (inverter)
      Voltage115 V (standard outlet)
      RefrigerantR-32 (GWP 675)
      Support bracket includedNo
      On the market sinceFebruary 10, 2026
      Last certifiedFebruary 10, 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 × depth19.1" W × 14.6" H × 21.8" D
      Weight51 lb
      How it compares with 33 other 12,000 BTU window units#7 of 34
      • CEER (class median 15.0)16.0, tied with 7 others
      • Yearly cost vs. class median ($108)$7 less
      • Width 19.1" (class median 20.7")narrower than 88%
      • Weight 51 lb (class median 59 lb)lighter than 94%
      • Rank among 13 similar designs#3

      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 Midea MWEUWA-12CRFN8-BCP0 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 Midea MWEUWA-12CRFN8-BCP0 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 Midea MWEUWA-12CRFN8-BCP0 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 Midea MWEUWA-12CRFN8-BCP0, and will it fit my window?
      19.1" W × 14.6" H × 21.8" D, 51 lb. It is narrower than 88% of its 33 competitors and lighter than 94% of them. The window must be wider than 19.1"; the side panels fill the remaining gap.
      Can the Midea MWEUWA-12CRFN8-BCP0 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 Midea MWEUWA-12CRFN8-BCP0 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 Midea MWEUWA-12CRFN8-BCP0
      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 Midea MWEUWA-12CRFN8-BCP0.

      ModelCEERCompared with this one
      Whirlpool WHAW121CWX16.0same CEER, 0.7" wider, U-shaped
      Hisense AWUS1227TW16.0same CEER, 1.2" wider, 6 lb heavier, U-shaped
      Frigidaire Gallery GHWW125TF116.0same CEER, 8 lb heavier
      Whirlpool WHAW121INV16.0same CEER, 5.1" wider, 8 lb heavier, U-shaped
      Midea MAW12U1KWT16.0same CEER, 8 lb heavier, U-shaped

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

      Source: ENERGY STAR Certified Room Air Conditioners (U.S. EPA), certification of February 10, 2026. How we use the data.