What the MOISWELL Defender M7R costs to run
The MOISWELL Defender M7R is certified by ENERGY STAR at 285 kWh a year, cheaper than most models in its category to run among dehumidifiers currently certified.
That $54 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 24.6% less, ranking 203 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 $17/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 MOISWELL Defender M7R: Easykey AQUA-RCS25 (Y)-N4-3-25 ($54/yr, 285 kWh/yr), then MOISWELL Defender ME-7 ($54/yr, 285 kWh/yr).
Within the MOISWELL lineup
Of the 24 ENERGY STAR certified dehumidifiers MOISWELL makes, the Defender M7R is the cheapest to run, $64/year less than MOISWELL's priciest, the Marshal WP160.
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.
Shopping for a new one
Efficient as certified dehumidifiers go, $54/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
$54/year to run is the predictable cost of the MOISWELL Defender M7R; a protection plan covers the unpredictable one, a repair bill.
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 203 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.