Model
Lg LW6023IVSM
Rank #9 means 8 of the 404 room air conditioner models we track cost less to run each year; the 96th efficiency percentile means it uses less energy for its size than 96% of those models.
What does the Lg LW6023IVSM cost to run per year?
Do the math and the Lg LW6023IVSM's $54/yr running cost puts it at rank #9 of 404, among the least expensive room air conditioner models we track to keep running. It uses 41% less energy than the U.S. federal standard model in its class, which would cost about $91/yr to run, a saving of roughly $37 a year. Its 96th size-adjusted efficiency percentile puts it in a small top tier of the class once capacity stops flattering the comparison. Its CEER of 15.5 reflects combined energy efficiency ratio, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Tcl W5WC72M-B at $51/yr runs a little cheaper and the Midea MAW06U1QWT at $55/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 Lg LW6023IVSM's $54/yr adds up to roughly $540 in electricity alone, before purchase price or repairs.
By the numbers
The Lg LW6023IVSM 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 $54/yr, here is what the Lg LW6023IVSM adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Lg LW6023IVSM costs about $540. That is roughly $370 less than a standard model in its class, which would run closer to $910 over the same ten years.
How the Lg LW6023IVSM compares
The room air conditioner class we track runs from $51 to $389 a year. At $54/yr, it runs about $45 a year cheaper than the class median of $99, and it is about $3 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $91/yr, the Lg LW6023IVSM uses 41% less energy.
What drives its running cost
At 6000 BTU/hr, the Lg LW6023IVSM is a small room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, at the small end of the class, capacity itself is doing a lot of the work to keep that figure down, separate from how efficient the unit actually is. The CEER of 15.5 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 Lg LW6023IVSM cheap to run?
Yes. Its $54/yr running cost puts it at rank #9 of 404, below what most room air conditioner models we track cost to run.
How much does the Lg LW6023IVSM cost per month?
About $4.49 a month, which is the $54 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: 290 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $54 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Lg LW6023IVSM for its size?
96th percentile once size is factored in. That means its size-adjusted efficiency is a real factor in the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 8 | Tcl W5WC72M-B5000 BTU/hr | $51 |
| 7 | Tcl W5WC72M5000 BTU/hr | $51 |
| 6 | Tcl W5WC72-B5000 BTU/hr | $51 |
| 5 | Tcl W5WC725000 BTU/hr | $51 |
| 4 | Tcl T05WV9RB5000 BTU/hr | $51 |
Source
ES_1118034_LW6023IVSM_09222023104621_80182319View certified room air conditioner listingsENERGY STAR data as of July 2026Lg and LW6023IVSM 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.