Model
Hisense AW1823TW3W
Rank #354 means 353 of the 404 room air conditioner models we track cost less to run each year; the 15th efficiency percentile means it uses less energy for its size than 15% of those models.
What does the Hisense AW1823TW3W cost to run per year?
Among the 404 room air conditioner models we track, the Hisense AW1823TW3W's $167/yr running cost ranks it #354, in the pricier fifth of the class. It uses 40% less energy than the U.S. federal standard model in its class, which would cost about $278/yr to run, a saving of roughly $111 a year. Efficiency-wise, once size is accounted for, it lags most of the class, ahead of only 15% of the models we track. Its CEER of 15 reflects combined energy efficiency ratio, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Frigidaire FHWW185WE2 at $167/yr runs a little cheaper and the Keplerx KBRC18RSVE2 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 Hisense AW1823TW3W's $167/yr adds up to roughly $1670 in electricity alone, before purchase price or repairs.
Also sold as: Frigidaire FHWW185WE2.
By the numbers
The Hisense AW1823TW3W 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 $167/yr, here is what the Hisense AW1823TW3W adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Hisense AW1823TW3W costs about $1670. That is roughly $1110 less than a standard model in its class, which would run closer to $2780 over the same ten years.
How the Hisense AW1823TW3W compares
The room air conditioner class we track runs from $51 to $389 a year. At $167/yr, it runs about $68 a year above the class median of $99, and it is about $116 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $278/yr, the Hisense AW1823TW3W uses 40% less energy.
What drives its running cost
At 18000 BTU/hr, the Hisense AW1823TW3W 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 15, 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 Hisense AW1823TW3W cheap to run?
Its $167/yr running cost, rank #354 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 Hisense AW1823TW3W cost per month?
About $13.92 a month, which is the $167 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: 900 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $167 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Hisense AW1823TW3W for its size?
15th 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_1115137_AW1823TW3W_06202024090946_9213678View certified room air conditioner listingsENERGY STAR data as of July 2026Hisense and AW1823TW3W 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.