Model
Asahwo PD22SA
Rank #34 means 33 of the 519 dehumidifier models we track cost less to run each year; the 36th efficiency percentile means it uses less energy for its size than 36% of those models.
What does the Asahwo PD22SA cost to run per year?
The Asahwo PD22SA costs about $26 a year to run and sits near the top of the cheapest-to-run leaderboard, rank #34 of 519. Its 36th size-adjusted efficiency percentile is a step behind the class median, though not among the weakest results. Its IEF of 1.88 reflects integrated energy factor, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Waykar, Kesnos, Yaufey, Fehom YDZ-32B at $25/yr runs a little cheaper and the Waykar PD160B-PRO at $27/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A dehumidifier typically stays in service for somewhere around 8 years; over that span, the Asahwo PD22SA's $26/yr adds up to roughly $208 in electricity alone, before purchase price or repairs.
By the numbers
The Asahwo PD22SA 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 $26/yr, here is what the Asahwo PD22SA adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Asahwo PD22SA costs about $260. That is roughly $380 less than the class median, which would run closer to $640 over the same ten years.
How the Asahwo PD22SA compares
The dehumidifier class we track runs from $19 to $521 a year. At $26/yr, it runs about $38 a year cheaper than the class median of $64, and it is about $7 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 12.22 pints/day, the Asahwo PD22SA is a small dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, 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. The IEF of 1.88 on this model, below the class median of 2.01, measures integrated energy factor; it is the number to compare directly against another model's IEF if capacity is similar.
- Integrated Energy Factor (IEF). Two dehumidifiers rated for the same pints per day can carry very different IEF figures, and IEF is what actually separates their running costs.
- Water removal capacity (pints/day). Pints-per-day rating scales with the space it is built for, and that rating is the first driver of how much power the compressor needs.
- Humidistat accuracy. How tightly a humidistat holds its target humidity determines how much of the day the compressor actually runs, on top of the unit's rated capacity and IEF.
Common questions
Is the Asahwo PD22SA cheap to run?
Yes, relatively. At $26 a year it ranks #34 of 519 dehumidifier models we track, in the cheaper part of its class to run.
How much does the Asahwo PD22SA cost per month?
Roughly $2.17/mo, spreading the $26/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 140 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $26 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Asahwo PD22SA for its size?
36th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
Source
ES_1151913_PD22SA_06132025133408_7731505View certified dehumidifier listingsENERGY STAR data as of July 2026Asahwo and PD22SA 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.