Model
Midea MWCUWH-18CRFN8-MCP0
Rank #352 means 351 of the 404 room air conditioner models we track cost less to run each year; the 16th efficiency percentile means it uses less energy for its size than 16% of those models.
What does the Midea MWCUWH-18CRFN8-MCP0 cost to run per year?
Do the math and the Midea MWCUWH-18CRFN8-MCP0's $157/yr puts it at rank #352 of 404, one of the costlier room air conditioner models we track to keep running. It uses 50% less energy than the U.S. federal standard model in its class, which would cost about $313/yr to run, a saving of roughly $156 a year. Adjusted for size, it is only more efficient than 16% of room air conditioner models we track, so its headline cost is mostly a function of its capacity rather than efficiency. The CEER figure of 16 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 MAW18S2KWT-A at $157/yr runs a little cheaper and the Frigidaire FHWW185WE2 at $167/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 MWCUWH-18CRFN8-MCP0's $157/yr adds up to roughly $1570 in electricity alone, before purchase price or repairs.
Also sold as: Midea MAW18S2KWT-A.
By the numbers
The Midea MWCUWH-18CRFN8-MCP0 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 $157/yr, here is what the Midea MWCUWH-18CRFN8-MCP0 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 MWCUWH-18CRFN8-MCP0 costs about $1570. That is roughly $1560 less than a standard model in its class, which would run closer to $3130 over the same ten years.
How the Midea MWCUWH-18CRFN8-MCP0 compares
The room air conditioner class we track runs from $51 to $389 a year. At $157/yr, it runs about $58 a year above the class median of $99, and it is about $106 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $313/yr, the Midea MWCUWH-18CRFN8-MCP0 uses 50% less energy.
What drives its running cost
At 18000 BTU/hr, the Midea MWCUWH-18CRFN8-MCP0 is a large room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, and larger room air conditioner models generally cost more to run than smaller ones in the same class, simply because there is more to keep cold, spin, heat, or light. The CEER of 16 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). CEER captures cooling output per watt, including standby power; a higher CEER means less electricity for the same BTU of cooling.
- BTU cooling capacity. A higher-BTU unit is sized for a bigger room and generally uses more electricity per hour of operation than a smaller unit, regardless of efficiency.
- Thermostat and mode usage. Running on a fixed low temperature around the clock uses far more energy than using a thermostat setting, eco mode, or a timer to match cooling to when the room is actually occupied.
Common questions
Is the Midea MWCUWH-18CRFN8-MCP0 cheap to run?
Not especially. At $157 a year it ranks #352 of 404 room air conditioner models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Midea MWCUWH-18CRFN8-MCP0 cost per month?
Roughly $13.05/mo, spreading the $157/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 844 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $157 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Midea MWCUWH-18CRFN8-MCP0 for its size?
16th 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
Source
ES_1138537_MWCUWH-18CRFN8-MCP0_03172026134640_80277013View certified room air conditioner listingsENERGY STAR data as of July 2026Midea and MWCUWH-18CRFN8-MCP0 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.