Model
K�Hl+ KHVS12B33B
Rank #230 means 229 of the 404 room air conditioner models we track cost less to run each year; the 43rd efficiency percentile means it uses less energy for its size than 43% of those models.
What does the K�Hl+ KHVS12B33B cost to run per year?
At $111 a year to run, the K�Hl+ KHVS12B33B sits close to the middle of its class on cost, ranking #230 of 404 room air conditioner models we track. It uses 61% less energy than the U.S. federal standard model in its class, which would cost about $285/yr to run, a saving of roughly $174 a year. Once capacity is factored in, its efficiency percentile of 43 is fairly typical for the class, neither a standout nor a laggard. The CEER figure of 15.8 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 Ge Profile AHTR12ACH2 at $110/yr runs a little cheaper and the Black+Decker BD12NWES at $111/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 K�Hl+ KHVS12B33B's $111/yr adds up to roughly $1110 in electricity alone, before purchase price or repairs.
By the numbers
The K�Hl+ KHVS12B33B 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 $111/yr, here is what the K�Hl+ KHVS12B33B adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the K�Hl+ KHVS12B33B costs about $1110. That is roughly $1740 less than a standard model in its class, which would run closer to $2850 over the same ten years.
How the K�Hl+ KHVS12B33B compares
The room air conditioner class we track runs from $51 to $389 a year. At $111/yr, it runs about $12 a year above the class median of $99, and it is about $60 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $285/yr, the K�Hl+ KHVS12B33B uses 61% less energy.
What drives its running cost
At 12600 BTU/hr, the K�Hl+ KHVS12B33B 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 15.8 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 K�Hl+ KHVS12B33B cheap to run?
It is about average. At $111 a year it ranks #230 of 404 room air conditioner models we track, close to the middle of its class on running cost.
How much does the K�Hl+ KHVS12B33B cost per month?
Roughly $9.25/mo, spreading the $111/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 598 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $111 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the K�Hl+ KHVS12B33B for its size?
43rd percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_31705_KHVS12B33B_061720260323378_5982809View certified room air conditioner listingsENERGY STAR data as of July 2026K�Hl+ and KHVS12B33B 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.