Model
Midea MAW24S2KWT-A
Rank #377 means 376 of the 404 room air conditioner models we track cost less to run each year; the 10th efficiency percentile means it uses less energy for its size than 10% of those models.
What does the Midea MAW24S2KWT-A cost to run per year?
The Midea MAW24S2KWT-A costs about $242 a year to run, well up the cost table for its class at rank #377 of 404. It uses 47% less energy than the U.S. federal standard model in its class, which would cost about $457/yr to run, a saving of roughly $215 a year. Size-adjusted, this model ranks near the bottom of its class on efficiency, ahead of just 10% of room air conditioner models we track. At a CEER of 13.8, its combined energy efficiency ratio is the single figure that best explains how it earns its running-cost number.
Immediately around it on the leaderboard, the K�Hl KCVM24B30B at $231/yr runs a little cheaper and the Midea MAW24V2KYWT-S at $242/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 MAW24S2KWT-A's $242/yr adds up to roughly $2420 in electricity alone, before purchase price or repairs.
Also sold as: Midea MAW24V2KYWT-S, Midea MWCUWH-24CRFN8-MCM8.
By the numbers
The Midea MAW24S2KWT-A 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 $242/yr, here is what the Midea MAW24S2KWT-A 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 MAW24S2KWT-A costs about $2420. That is roughly $2150 less than a standard model in its class, which would run closer to $4570 over the same ten years.
How the Midea MAW24S2KWT-A compares
The room air conditioner class we track runs from $51 to $389 a year. At $242/yr, it runs about $143 a year above the class median of $99, and it is about $191 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $457/yr, the Midea MAW24S2KWT-A uses 47% less energy.
What drives its running cost
At 24000 BTU/hr, the Midea MAW24S2KWT-A is a large room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up. Beyond size, its CEER of 13.8, below the class median of 15, is the class's own efficiency yardstick, combined energy efficiency ratio, and it is what separates two similarly sized models with different running costs.
- 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 MAW24S2KWT-A cheap to run?
Its $242/yr running cost, rank #377 of 404, is above what most room air conditioner models we track cost to run, so this is not one of the cheaper picks on electricity alone.
How much does the Midea MAW24S2KWT-A cost per month?
About $20.17 a month, which is the $242 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: 1,304 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $242 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Midea MAW24S2KWT-A for its size?
10th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 376 | K�Hl KCVM24B30B23100 BTU/hr | $231 |
| 375 | Lg LW2422IVSM(230V)23500 BTU/hr | $226 |
| 374 | Lg LW2422IVSM(208V)23500 BTU/hr | $226 |
| 373 | Hisense AW2223TW3W22000 BTU/hr | $204 |
| 372 | K�Hl KCVM18B30B20900 BTU/hr | $199 |
Source
ES_1138537_MAW24S2KWT-A_04142026105407_80294581View certified room air conditioner listingsENERGY STAR data as of July 2026Midea and MAW24S2KWT-A 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.