Model
Midea MW10MSWBA5RCM
Rank #143 means 142 of the 404 room air conditioner models we track cost less to run each year; the 65th efficiency percentile means it uses less energy for its size than 65% of those models.
What does the Midea MW10MSWBA5RCM cost to run per year?
At about $93 a year, the Midea MW10MSWBA5RCM undercuts most room air conditioner models we track on running cost, rank #143 of 404. It uses 38% less energy than the U.S. federal standard model in its class, which would cost about $150/yr to run, a saving of roughly $57 a year. Its size-adjusted efficiency percentile of 65 is comfortably above the class median. 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 MAW10W1QWT at $93/yr runs a little cheaper and the Midea MW10MSWBA6RCM at $93/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 MW10MSWBA5RCM's $93/yr adds up to roughly $930 in electricity alone, before purchase price or repairs.
Also sold as: Black+Decker BD10NWES.
By the numbers
The Midea MW10MSWBA5RCM 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 $93/yr, here is what the Midea MW10MSWBA5RCM 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 MW10MSWBA5RCM costs about $930. That is roughly $570 less than a standard model in its class, which would run closer to $1500 over the same ten years.
How the Midea MW10MSWBA5RCM compares
The room air conditioner class we track runs from $51 to $389 a year. At $93/yr, it runs about $6 a year cheaper than the class median of $99, and it is about $42 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $150/yr, the Midea MW10MSWBA5RCM uses 38% less energy.
What drives its running cost
At 10000 BTU/hr, the Midea MW10MSWBA5RCM is a small room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. Its CEER of 15, above the class median of 15, reflects combined energy efficiency ratio: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- 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 MW10MSWBA5RCM cheap to run?
Yes. Its $93/yr running cost puts it at rank #143 of 404, below what most room air conditioner models we track cost to run.
How much does the Midea MW10MSWBA5RCM cost per month?
About $7.73 a month, which is the $93 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: 500 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $93 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Midea MW10MSWBA5RCM for its size?
65th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 173 | Midea MAW10W1QWT10000 BTU/hr | $93 |
| 172 | Midea MAW10V1UWT10000 BTU/hr | $93 |
| 171 | Midea MAW10V1QWT10000 BTU/hr | $93 |
| 170 | Midea MAW10S1VWWT-T10000 BTU/hr | $93 |
| 169 | Midea MAW10S1VWT-A10000 BTU/hr | $93 |
Source
ES_1138537_MW10MSWBA5RCM_07272023171057_80176132View certified room air conditioner listingsENERGY STAR data as of July 2026Midea and MW10MSWBA5RCM 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.