What the ALORAIR Sentinel HD55S costs to run
The ALORAIR Sentinel HD55S is certified by ENERGY STAR at 379 kWh a year, about average for its category to run among dehumidifiers currently certified.
That $71 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
The category average is 378 kWh/yr; this model runs 0.3% above it, ranking 324 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 $0/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 ALORAIR Sentinel HD55S: ABESTORM Guardian SN55S ($71/yr, 379 kWh/yr), then BASEAIRE AirWerx 55S ($71/yr, 379 kWh/yr).
Comparing ALORAIR's own models
Of the 3 ENERGY STAR certified dehumidifiers ALORAIR makes, the Sentinel HD55S costs the most to run, $26/year more than ALORAIR's cheapest, the Sentinel Pro35X.
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.
Is it worth replacing?
Efficient as certified dehumidifiers go, $71/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 dehumidifier like the ALORAIR Sentinel HD55S 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. At rank 324 of 546 for running cost, see the dehumidifier category page for the rest of the field, or the guide to how much your state matters.