Model
Midea MAW12U1QWT
Rank #221 means 220 of the 404 room air conditioner models we track cost less to run each year; the 46th efficiency percentile means it uses less energy for its size than 46% of those models.
What does the Midea MAW12U1QWT cost to run per year?
Among the 404 room air conditioner models we track, the Midea MAW12U1QWT's $110/yr running cost ranks it #221, close to dead center. It uses 39% less energy than the U.S. federal standard model in its class, which would cost about $180/yr to run, a saving of roughly $70 a year. Size-adjusted, this model sits close to the class median on efficiency, ahead of 46% of room air conditioner models we track. The CEER figure of 15.2 on this model captures combined energy efficiency ratio, the main efficiency lever ENERGY STAR tracks for this class.
Immediately around it on the leaderboard, the Midea 1014278205 at $110/yr runs a little cheaper and the Midea MAW12U2QWT at $110/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A room air conditioner typically stays in service for somewhere around 10 years; over that span, the Midea MAW12U1QWT's $110/yr adds up to roughly $1100 in electricity alone, before purchase price or repairs.
Also sold as: Midea 1010451379.
By the numbers
The Midea MAW12U1QWT normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $110/yr, here is what the Midea MAW12U1QWT adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Midea MAW12U1QWT costs about $1100. That is roughly $700 less than a standard model in its class, which would run closer to $1800 over the same ten years.
How the Midea MAW12U1QWT compares
The room air conditioner class we track runs from $51 to $389 a year. At $110/yr, it runs about $11 a year above the class median of $99, and it is about $59 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $180/yr, the Midea MAW12U1QWT uses 39% less energy.
What drives its running cost
At 12000 BTU/hr, the Midea MAW12U1QWT is a mid-size room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, neither the size advantage of a small unit nor the size penalty of a large one applies here, so its running cost is a fairer test of efficiency alone. The CEER of 15.2 on this model, above the class median of 15, measures combined energy efficiency ratio; it is the number to compare directly against another model's CEER if capacity is similar.
- Combined Energy Efficiency Ratio (CEER). Two units with the same BTU rating can post very different running costs, and CEER is the figure that explains most of that gap.
- BTU cooling capacity. BTU rating scales with room size, and it is usually the first driver of an air conditioner's running cost, ahead of its CEER figure.
- Thermostat and mode usage. How the unit is actually operated, thermostat cycling versus a fixed setting, moves real electricity use more than the rated BTU or CEER figure alone.
Common questions
Is the Midea MAW12U1QWT cheap to run?
Roughly, yes. Its $110/yr figure is close to the class median, ranking #221 of 404, neither a bargain nor a splurge on running cost.
How much does the Midea MAW12U1QWT cost per month?
About $9.16 a month, which is the $110 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 592 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $110 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Midea MAW12U1QWT for its size?
46th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_1138537_MAW12U1QWT_11212023124024_80189917View certified room air conditioner listingsENERGY STAR data as of July 2026Midea and MAW12U1QWT are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.