Running cost for the Waykar CTH30A
The Waykar CTH30A is certified by ENERGY STAR at 117 kWh a year, one of the cheaper models in its category to run among dehumidifiers currently certified.
That $22 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 dehumidifier
Against the category average of 378 kWh/yr, this model uses 69% less, ranking 20 of 546 dehumidifiers tracked here for running cost. That average is drawn from all 546 dehumidifiers ENERGY STAR currently certifies, not an outside number, a $49/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 Waykar CTH30A: KESNOS CTH30E ($22/yr, 117 kWh/yr), then Waykar CTH30D ($22/yr, 117 kWh/yr).
Comparing Waykar's own models
Of the 39 ENERGY STAR certified dehumidifiers Waykar makes, the CTH30A is the cheapest to run, $75/year less than Waykar's priciest, the CTH150PB.
Lifespan
NAHB's Study of Life Expectancy of Home Components does not publish a figure for dehumidifiers, so no lifetime cost is shown here rather than a guessed one. The annual and monthly figures above stand on their own.
Weighing a replacement
Efficient as certified dehumidifiers go, $22/year is a reasonable baseline if you're comparing what else is on the market.
See what else is certified in this category before you decide.
If you're keeping it
At $22/year just to run, a dehumidifier is worth protecting against an unplanned repair bill on top of that.
Where this number comes from
Nothing here is estimated from a nameplate wattage; the 117 kWh/yr is ENERGY STAR's own certified figure for this model. The full Dehumidifier category page shows all 546 dehumidifiers ranked by cost; the state-rate guide covers the half of this number that isn't the appliance.