Model
Keplerx KARC14RSVE1
Rank #319 means 318 of the 404 room air conditioner models we track cost less to run each year; the 23rd efficiency percentile means it uses less energy for its size than 23% of those models.
What does the Keplerx KARC14RSVE1 cost to run per year?
At about $130 a year, the Keplerx KARC14RSVE1 costs more to run than most room air conditioner models we track, rank #319 of 404. It uses 40% less energy than the U.S. federal standard model in its class, which would cost about $217/yr to run, a saving of roughly $87 a year. Size-adjusted, this model trails most of its class on efficiency, ahead of just 23% of room air conditioner models we track. The CEER figure of 15 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 Hisense AW1422TW1W at $130/yr runs a little cheaper and the Keystone KSTAW141WA at $130/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 Keplerx KARC14RSVE1's $130/yr adds up to roughly $1300 in electricity alone, before purchase price or repairs.
Also sold as: Danby DAC140EBIBDB.
By the numbers
The Keplerx KARC14RSVE1 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 $130/yr, here is what the Keplerx KARC14RSVE1 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Keplerx KARC14RSVE1 costs about $1300. That is roughly $870 less than a standard model in its class, which would run closer to $2170 over the same ten years.
How the Keplerx KARC14RSVE1 compares
The room air conditioner class we track runs from $51 to $389 a year. At $130/yr, it runs about $31 a year above the class median of $99, and it is about $79 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $217/yr, the Keplerx KARC14RSVE1 uses 40% less energy.
What drives its running cost
At 14000 BTU/hr, the Keplerx KARC14RSVE1 is a large room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, among room air conditioner models, bigger capacity is the most common reason a running-cost figure lands on the high side, all else being equal. 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 Keplerx KARC14RSVE1 cheap to run?
Its $130/yr running cost, rank #319 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 Keplerx KARC14RSVE1 cost per month?
About $10.83 a month, which is the $130 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: 700 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $130 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Keplerx KARC14RSVE1 for its size?
23rd 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_1055302_KARC14RSVE1_12132024113552View certified room air conditioner listingsENERGY STAR data as of July 2026Keplerx and KARC14RSVE1 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.