Model
Tcl T06WQ2S
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 T06WQ2S cost to run per year?
Rank #16 of 404 puts the Tcl T06WQ2S at the very top of the cheapest-to-run leaderboard for its class, at roughly $61 a year. 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. At a CEER of 13.7, 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 H6W4KW at $61/yr runs a little cheaper and the Tcl T06WV9R 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 T06WQ2S'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 T06WQ2S 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 T06WQ2S 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 T06WQ2S 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 T06WQ2S 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 T06WQ2S uses 25% less energy.
What drives its running cost
At 6000 BTU/hr, the Tcl T06WQ2S 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. Its CEER of 13.7, below the class median of 15, reflects combined energy efficiency ratio: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- 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 T06WQ2S 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 T06WQ2S 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 T06WQ2S 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 |
|---|---|---|
| 18 | Tcl H6W4KW6000 BTU/hr | $61 |
| 17 | Midea MWEUWA-06CRFN8-BCM76000 BTU/hr | $61 |
| 16 | Hisense WCT06W25A6000 BTU/hr | $61 |
| 15 | Midea MWAUQB-06CRFN8-BCN116000 BTU/hr | $55 |
| 14 | Midea MAW06V1UWT6000 BTU/hr | $55 |
Source
ES_1126578_T06WQ2S_11122025105736_80268636View certified room air conditioner listingsENERGY STAR data as of July 2026Tcl and T06WQ2S 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.