Model
Tcl W6WC72-B
Rank #16 means 15 of the 404 room air conditioner models we track cost less to run each year; the 94th efficiency percentile means it uses less energy for its size than 94% of those models.
What does the Tcl W6WC72-B cost to run per year?
The Tcl W6WC72-B runs for about $61 a year, landing it in the very bottom slice of the cost table at rank #16 of 404 room air conditioner models we track. It uses 25% less energy than the U.S. federal standard model in its class, which would cost about $81/yr to run, a saving of roughly $20 a year. Its size-adjusted efficiency percentile of 94 means the low running cost is not just a function of size; it is genuinely efficient for its class. The CEER figure of 13.7 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 Tcl W6WC72 at $61/yr runs a little cheaper and the Tcl W6WC72-BI at $61/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 Tcl W6WC72-B's $61/yr adds up to roughly $610 in electricity alone, before purchase price or repairs.
Also sold as: Hisense WCT06W25A.
By the numbers
The Tcl W6WC72-B 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 $61/yr, here is what the Tcl W6WC72-B adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Tcl W6WC72-B costs about $610. That is roughly $200 less than a standard model in its class, which would run closer to $810 over the same ten years.
How the Tcl W6WC72-B compares
The room air conditioner class we track runs from $51 to $389 a year. At $61/yr, it runs about $38 a year cheaper than the class median of $99, and it is about $10 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $81/yr, the Tcl W6WC72-B uses 25% less energy.
What drives its running cost
At 6000 BTU/hr, the Tcl W6WC72-B 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 13.7 on this model, below 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 Tcl W6WC72-B cheap to run?
Yes. Its $61/yr running cost puts it at rank #16 of 404, below what most room air conditioner models we track cost to run.
How much does the Tcl W6WC72-B cost per month?
About $5.08 a month, which is the $61 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: 329 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $61 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Tcl W6WC72-B for its size?
94th 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 |
|---|---|---|
| 22 | Tcl W6WC726000 BTU/hr | $61 |
| 21 | Tcl T06WV9RB6000 BTU/hr | $61 |
| 20 | Tcl T06WV9R6000 BTU/hr | $61 |
| 19 | Tcl T06WQ2S6000 BTU/hr | $61 |
| 18 | Tcl H6W4KW6000 BTU/hr | $61 |
Source
ES_1126578_W6WC72-B_11122025105736_80268948View certified room air conditioner listingsENERGY STAR data as of July 2026Tcl and W6WC72-B 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.