Model
Midea MAW12AV1QWT-C
Rank #231 means 230 of the 404 room air conditioner models we track cost less to run each year; the 43rd efficiency percentile means it uses less energy for its size than 43% of those models.
What does the Midea MAW12AV1QWT-C cost to run per year?
The Midea MAW12AV1QWT-C costs about $111 a year to run, a fairly typical figure for the class; it ranks #231 of 404. It uses 38% less energy than the U.S. federal standard model in its class, which would cost about $180/yr to run, a saving of roughly $69 a year. Its size-adjusted efficiency percentile of 43 lands in the middle of the pack once capacity is accounted for. Its CEER of 15 reflects combined energy efficiency ratio, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Midea MAW12AV1QWT at $111/yr runs a little cheaper and the Midea MAW12AV1UWT-C at $111/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 MAW12AV1QWT-C's $111/yr adds up to roughly $1110 in electricity alone, before purchase price or repairs.
Also sold as: Black+Decker BD12NWES.
By the numbers
The Midea MAW12AV1QWT-C 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 $111/yr, here is what the Midea MAW12AV1QWT-C 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 MAW12AV1QWT-C costs about $1110. That is roughly $690 less than a standard model in its class, which would run closer to $1800 over the same ten years.
How the Midea MAW12AV1QWT-C compares
The room air conditioner class we track runs from $51 to $389 a year. At $111/yr, it runs about $12 a year above the class median of $99, and it is about $60 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 MAW12AV1QWT-C uses 38% less energy.
What drives its running cost
At 12000 BTU/hr, the Midea MAW12AV1QWT-C is a mid-size room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, putting it squarely in the middle of the class on the size lever that drives most of the cost. The CEER of 15 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 MAW12AV1QWT-C cheap to run?
Roughly, yes. Its $111/yr figure is close to the class median, ranking #231 of 404, neither a bargain nor a splurge on running cost.
How much does the Midea MAW12AV1QWT-C cost per month?
About $9.28 a month, which is the $111 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: 600 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $111 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Midea MAW12AV1QWT-C for its size?
43rd percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 260 | Midea MAW12AV1QWT12000 BTU/hr | $111 |
| 259 | Midea 101463487412000 BTU/hr | $111 |
| 258 | Lg LW1224IVSM12000 BTU/hr | $111 |
| 257 | Lg LW1222IVSM12000 BTU/hr | $111 |
| 256 | Ktaxon TIWC-12CRD112000 BTU/hr | $111 |
Source
ES_1138537_MAW12AV1QWT-C_09282023160824_80183471View certified room air conditioner listingsENERGY STAR data as of July 2026Midea and MAW12AV1QWT-C 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.