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      18,000 BTU window air conditioner

      Midea MAW18R2VWT

      Very good efficiency for its size: a CEER of 15.0 ranks #4 of 10 18,000 BTU window air conditioners.

      It cools a room of about 700-1000 sq ft, draws about 1200 watts and costs about $162 a year to run at typical U.S. use and prices.

      CEER
      15.0 Combined efficiency, higher is better
      Very good · beats 70%
      Cooling
      18,000 BTU/hFor about 700-1000 sq ft
      Energy use
      900 kWh/yr40% less than the federal minimum
      Unit size
      23.6" wide 17.9" high, 25.4" deep, 96 lb

      A good fit if…

      • You want low bills - its CEER beats 70% of 18,000 BTU window air conditioners.

      Think twice if…

      • You only have ordinary outlets - it needs a 230 V circuit and plug.
      • You plan to install it alone - at 96 lb it is a two-person job.
      • You also need heat - it cools only.

      Calculate my running costCheck the size for my room

      Details

      Specifications18,000 BTU, 230 V
      General
      BrandMidea
      Also sold asFrigidaire, Keystone, Keplerx
      Model numberMAW18R2VWT
      TypeWindow
      DesignStandard box
      HeatingNo, cooling only
      CompressorVariable speed (inverter)
      Voltage230 V (needs a 230 V outlet)
      RefrigerantR-32 (GWP 675)
      Support bracket includedNo
      On the market sinceDecember 6, 2023
      Last certifiedAugust 6, 2025
      Performance
      Cooling capacity18,000 BTU/h
      CEERCombined energy efficiency ratio, includes standby power15.0
      Yearly energy useENERGY STAR test: 750 hours900 kWh
      Better than federal minimum40% less energy
      ENERGY STAR Most EfficientNo
      Size
      Width × height × depth23.6" W × 17.9" H × 25.4" D
      Weight96 lb
      How it compares with 9 other 18,000 BTU window units#4 of 10
      • CEER (class median 14.7)15.0, tied with 1 other
      • Yearly cost vs. class median ($169)$7 less
      • Width 23.6" (class median 25.9")narrower than 89%
      • Weight 96 lb (class median 106 lb)lighter than 67%
      • Rank among 5 similar designs#3

      Compared with the other ENERGY STAR certified 18,000 BTU window units. Yearly cost at 750 hours and 18.0¢/kWh.

      Same unit, other model numbers6

      These model numbers have the same capacity, efficiency, energy use, dimensions and weight as the Midea MAW18R2VWT: the same unit under another brand, or with a colour or retailer code. Everything on this page applies to them.

      Questions7
      How many square feet does the Midea MAW18R2VWT cool?
      At 18,000 BTU/h it suits a room of about 700 to 1000 sq ft with normal sun and two people, following the ENERGY STAR sizing guide. In a heavily shaded room that stretches to about 770-1100 sq ft; in a very sunny one it shrinks to 630-900 sq ft. A kitchen needs 4,000 BTU more.
      How many watts and amps does the Midea MAW18R2VWT use?
      About 1200 watts at full power (18,000 BTU/h divided by its CEER of 15.0), which is 5.2 amps at 230 V. That is 50 W less than the typical unit in its class (1250 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 60% of the 10 units in the class.
      What outlet does the Midea MAW18R2VWT need?
      It is a 230 V unit that draws 5.2 A, so it needs its own 230 V circuit with a matching plug (typically NEMA 6-15 or 6-20). If the room has only ordinary 115 V outlets, an electrician has to add one. Only 100% of the 10 certified units in this class are 230 V.
      What are the dimensions of the Midea MAW18R2VWT, and will it fit my window?
      23.6" W × 17.9" H × 25.4" D, 96 lb. It is narrower than 89% of its 9 competitors and lighter than 67% of them. The window must be wider than 23.6"; the side panels fill the remaining gap.
      Can the Midea MAW18R2VWT also heat the room?
      No, it only cools. If you also need heat, 0 certified units in this class can do both; see the list of air conditioners with heat.
      Is the Midea MAW18R2VWT worth buying to replace an old air conditioner?
      An old unit of the same size at 9 CEER would cost about $271 a year to run at 750 hours and 18.0¢/kWh; this one costs about $162, so it saves roughly $108 a year.
      Is the Midea MAW18R2VWT the same as the Midea MAW18RV1CWT?
      As far as the certified data goes, yes. ENERGY STAR lists 7 model numbers with the same capacity, efficiency, energy use, dimensions and weight, which means the same unit sold under another brand or with a different colour or retailer code. The full list is on this page.

      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 MAW18R2VWT
      2. How you use it
      Per year
      $253
      Per month of use
      $46
      Per day
      $1.54
      Per hour
      19.2¢
      Power draw
      1200 W

      Electricity used: 1,584 kWh a yearAn old 9 CEER unit of the same size would cost $422

      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 MAW18R2VWT.

      ModelCEERCompared with this one
      Hisense AW1823TW3W15.0same CEER, 11 lb lighter
      Kühl KCVM18B30B14.60.4 CEER lower, 2.3" wider, 34 lb heavier, saddle design
      LG LW1822IVSM14.70.3 CEER lower, 2.4" wider, 16 lb heavier
      TCL T18WQ2S14.40.6 CEER lower, 1.8" wider, U-shaped
      Friedrich CCV18A30A14.40.6 CEER lower, 2.4" wider, 20 lb heavier, U-shaped

      See all 10 18,000 BTU window air conditioners, ranked

      Source: ENERGY STAR Certified Room Air Conditioners (U.S. EPA), certification of August 6, 2025. How we use the data.