Room Air Conditioners
MideaMAW12S1KWT-A
ENERGY STAR certified · Sep 2026 · Most Efficient
- Annual energy use
- 562.5 kWh/yr
- Cooling capacity
- 12000 BTU/h
- Combined energy efficiency ratio
- 16 BTU/Wh
- Below federal standard
- 47 %
Running cost calculator
Where your state sits among all 51
Cost to run a room air conditioner in every state
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How this is calculated
- Annual energy use is the figure ENERGY STAR lists for this model under typical test conditions. It is not measured in your home.
- Yearly cost = annual kWh × your rate. Monthly cost is the yearly cost divided by 12, a flat average. Five-year cost keeps the rate constant; prices will change.
- Statewide averages are not your utility’s tariff. Use your bill’s rate for a closer number.
- We do not estimate watts or hourly cost: the source data does not include them.
How it compares
Among 265 ENERGY STAR certified window models with a similar cooling capacity (9000 to 15000 BTU/h), this one ranks 104th lowest in annual energy use.
- Median of these models
- 563 kWh/yr
- This model vs the median
- 0%
- Uses less than
- 50% of them
Compared with every comparable model on the ENERGY STAR list, not only the ones published on this site. Same type, similar size.
Same type and size, lower energy use
| Model | kWh/yr | Difference |
|---|---|---|
| GREE GJH09BW-A6DRNL1B | 433 | 433 kWh |
| TCL W10WC72 | 469 | 469 kWh |
| TCL W10WC72-B | 469 | 469 kWh |
| TCL T10WV9S | 469 | 469 kWh |
| TCL T10WV9SB | 469 | 469 kWh |
Yearly cost by state
Same 562.500 kWh/yr at each state’s average residential price (2026-07).
Comparable models
Same type, within 25% of this model’s cooling capacity.
Specifications
- Annual energy use
- 562.5 kWh/yrENERGY STAR estimated annual energy use, typical use (DOE test procedure)
- Cooling capacity
- 12000 BTU/hRated cooling capacity
- Combined energy efficiency ratio
- 16 BTU/WhCombined Energy Efficiency Ratio
- Below federal standard
- 47 %As published by ENERGY STAR
- Type
- Window
- Product class
- 3. Without reverse cycle, with louvered sides, and 8,000 to 13,999 Btu/h
- Installation
- Does Not Straddle Window or Windowsill
- Heating mode
- No
- Variable-speed compressor
- Yes
- Voltage
- 115 V
- Height
- 14.7 in
- Width
- 21.7 in
- Depth
- 19.0 in
- Weight
- 51.8 lb
- Refrigerant
- R-32
- Refrigerant and GWP
- R-32 (GWP:675 | Lower GWP)
- Connected
- No
- UPC
- 840296524244
- Markets
- United States, Canada
- Available on market
- 2026-09-28
- ENERGY STAR ID
- 4710517
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Frequently asked questions
How much electricity does the Midea MAW12S1KWT-A use?
ENERGY STAR lists 562.5 kWh per year under typical test conditions, which is calculated with U.S. Department of Energy test procedures for a typical cooling season. Your use will differ with the climate, how many hours a day you cool and the temperature you set.
How much does it cost to run?
At statewide average residential prices, the listed annual use costs about $71.55 in Louisiana and $270.00 in Hawaii (EIA, 2026-07). Your own utility rate may be different; enter it in the calculator.
How does the Midea MAW12S1KWT-A compare with similar models?
Among 265 ENERGY STAR certified window models with a similar cooling capacity, it ranks 104th lowest in annual energy use. Its 562.5 kWh per year is the same as the median of 562.5 kWh.
What does the CEER number mean?
The combined energy efficiency ratio is the cooling output in BTU for each watt-hour of electricity used. This model is listed at 16 BTU/Wh. A higher number means more cooling for the same electricity.
Learn more
Methodology and sources
Model data comes from the ENERGY STAR Certified Room Air Conditioners dataset (EPA). Electricity prices are statewide average residential prices from the U.S. EIA, latest period July 2026. Values are stored locally and refreshed by scheduled imports. Missing values are left blank, never estimated.