Model
Midea MAW12V1WWT-T
Rank #207 means 206 of the 404 room air conditioner models we track cost less to run each year; the 49th efficiency percentile means it uses less energy for its size than 49% of those models.
What does the Midea MAW12V1WWT-T cost to run per year?
At about $104 a year, the Midea MAW12V1WWT-T lands in the middle third of room air conditioner models we track on running cost, rank #207 of 404. It uses 47% less energy than the U.S. federal standard model in its class, which would cost about $197/yr to run, a saving of roughly $93 a year. Its size-adjusted efficiency percentile of 49 lands in the middle of the pack once capacity is accounted for. At a CEER of 16, 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 Midea MAW12V1WWT at $104/yr runs a little cheaper and the Midea MWEUWA-12CRFN8-BCP0 at $104/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 MAW12V1WWT-T's $104/yr adds up to roughly $1040 in electricity alone, before purchase price or repairs.
Also sold as: Midea MAW12V1WBK.
By the numbers
The Midea MAW12V1WWT-T 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 $104/yr, here is what the Midea MAW12V1WWT-T 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 MAW12V1WWT-T costs about $1040. That is roughly $930 less than a standard model in its class, which would run closer to $1970 over the same ten years.
How the Midea MAW12V1WWT-T compares
The room air conditioner class we track runs from $51 to $389 a year. At $104/yr, it runs about $5 a year above the class median of $99, and it is about $53 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $197/yr, the Midea MAW12V1WWT-T uses 47% less energy.
What drives its running cost
At 12000 BTU/hr, the Midea MAW12V1WWT-T 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. Beyond size, its CEER of 16, above 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 MAW12V1WWT-T cheap to run?
Roughly, yes. Its $104/yr figure is close to the class median, ranking #207 of 404, neither a bargain nor a splurge on running cost.
How much does the Midea MAW12V1WWT-T cost per month?
About $8.7 a month, which is the $104 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: 563 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $104 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Midea MAW12V1WWT-T for its size?
49th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 209 | Midea MAW12V1WWT12000 BTU/hr | $104 |
| 208 | Midea MAW12V1WBK-T12000 BTU/hr | $104 |
| 207 | Midea MAW12V1WBK12000 BTU/hr | $104 |
| 206 | Friedrich KHVS10B11A10200 BTU/hr | $101 |
| 205 | Seasons ST10VB210000 BTU/hr | $99 |
Source
ES_1138537_MAW12V1WWT-T_04142026105407_80294581View certified room air conditioner listingsENERGY STAR data as of July 2026Midea and MAW12V1WWT-T 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.