Model
K�Hl KCVS12B30B
Rank #217 means 216 of the 404 room air conditioner models we track cost less to run each year; the 98th efficiency percentile means it uses less energy for its size than 98% of those models.
What does the K�Hl KCVS12B30B cost to run per year?
Ranking #217 of 404, the K�Hl KCVS12B30B runs at roughly $105 a year, neither the cheapest nor the priciest in its class. It uses 54% less energy than the U.S. federal standard model in its class, which would cost about $229/yr to run, a saving of roughly $124 a year. Adjusted for its ceer, it is more efficient than 98% of room air conditioner models we track, one of the strongest results in the whole class. At a CEER of 16.8, its combined energy efficiency ratio is the single figure that best explains how it earns its running-cost number.
Immediately around it on the leaderboard, the Tcl W12WC72-B at $104/yr runs a little cheaper and the K�Hl KCVS12B10B at $106/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 KCVS12B30B's $105/yr adds up to roughly $1050 in electricity alone, before purchase price or repairs.
By the numbers
The K�Hl KCVS12B30B 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 $105/yr, here is what the K�Hl KCVS12B30B 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 KCVS12B30B costs about $1050. That is roughly $1240 less than a standard model in its class, which would run closer to $2290 over the same ten years.
How the K�Hl KCVS12B30B compares
The room air conditioner class we track runs from $51 to $389 a year. At $105/yr, it runs about $6 a year above the class median of $99, and it is about $54 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $229/yr, the K�Hl KCVS12B30B uses 54% less energy.
What drives its running cost
At 12700 BTU/hr, the K�Hl KCVS12B30B 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. The CEER of 16.8 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 KCVS12B30B cheap to run?
It is about average. At $105 a year it ranks #217 of 404 room air conditioner models we track, close to the middle of its class on running cost.
How much does the K�Hl KCVS12B30B cost per month?
Roughly $8.77/mo, spreading the $105/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 567 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $105 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the K�Hl KCVS12B30B for its size?
98th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 216 | Tcl W12WC72-B12000 BTU/hr | $104 |
| 215 | Tcl W12WC7212000 BTU/hr | $104 |
| 214 | Tcl T12WV9SB12000 BTU/hr | $104 |
| 213 | Tcl T12WV9S12000 BTU/hr | $104 |
| 212 | Tcl T12WV4S12000 BTU/hr | $104 |
Source
ES_31705_KCVS12B30B_061720260323494_7261055View certified room air conditioner listingsENERGY STAR data as of July 2026K�Hl and KCVS12B30B 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.