What the TCL T05WV9RB costs to run
The TCL T05WV9RB is certified by ENERGY STAR at 273.7 kWh a year, one of the cheaper models in its category to run among room air conditioners currently certified.
That $51 is priced at 18.8¢/kWh, the average of all 51 state rates this site tracks. Your own state's rate is one click away.
Efficient, or not, for a room air conditioner
Against the category average of 603 kWh/yr, this model uses 54.6% less, ranking 7 of 447 room air conditioners tracked here for running cost. That average is drawn from all 447 room air conditioners ENERGY STAR currently certifies, not an outside number, a $62/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the TCL T05WV9RB: TCL T05WV9R ($51/yr, 273.7 kWh/yr), then TCL W5WC72 ($51/yr, 273.7 kWh/yr).
Same brand, different models
Ranked 4 of TCL's 59 certified room air conditioners, this sits between the T05WV9M ($51/yr, the brand's cheapest) and the T24WQ2S ($266/yr, its priciest).
What this adds up to over time
Over the 10-year service life NAHB reports for this category, running the TCL T05WV9RB costs roughly $515 in electricity, separate from the purchase price.
Weighing a replacement
Efficient as certified room air conditioners go, $51/year is a reasonable baseline if you're comparing what else is on the market.
Worth comparing a few current certified models before deciding.
If you're keeping it
A room air conditioner like the TCL T05WV9RB is a real household expense whether or not it needs replacing yet; a protection plan is one way to budget for a repair rather than a full replacement.
Where this number comes from
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. Ranked 7 of 447, the TCL T05WV9RB sits in the middle of the room air conditioner category, see the guide to why your state changes this number for the other half of the math.