Model
Costway ES10429US-WH
Rank #508 means 507 of the 519 dehumidifier models we track cost less to run each year; the 1st efficiency percentile means it uses less energy for its size than 1% of those models.
What does the Costway ES10429US-WH cost to run per year?
Rank #508 of 519 puts the Costway ES10429US-WH among the priciest dehumidifier models we track to keep running, at roughly $145 a year. Efficiency-wise, once size is accounted for, almost the entire class outperforms it, at just the 1th percentile. At a IEF of 1.7, its integrated energy factor is the single figure that best explains how it earns its running-cost number.
Immediately around it on the leaderboard, the Aprilaire E080 at $117/yr runs a little cheaper and the Wellsle YDL24P at $147/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 Costway ES10429US-WH's $145/yr adds up to roughly $1160 in electricity alone, before purchase price or repairs.
By the numbers
The Costway ES10429US-WH 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 $145/yr, here is what the Costway ES10429US-WH adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Costway ES10429US-WH costs about $1450. That is roughly $810 more than the class median, which would run closer to $640 over the same ten years.
How the Costway ES10429US-WH compares
The dehumidifier class we track runs from $19 to $521 a year. At $145/yr, it runs about $81 a year above the class median of $64, and it is about $126 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 22.66 pints/day, the Costway ES10429US-WH is a small dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, and smaller dehumidifier models generally cost less to run for the same job, all else being equal. Its IEF of 1.7, below the class median of 2.01, reflects integrated energy factor: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- Integrated Energy Factor (IEF). IEF measures liters of water removed per kilowatt-hour; a higher IEF means less energy per pint of moisture removed for a given capacity.
- Water removal capacity (pints/day). A dehumidifier rated to remove more pints per day is built for a larger space or a more humid room, and generally draws more power to do it.
- Humidistat accuracy. A unit with a more precise humidistat cycles the compressor off once the target humidity is reached, rather than running continuously.
Common questions
Is the Costway ES10429US-WH cheap to run?
Its $145/yr running cost, rank #508 of 519, is above what most dehumidifier models we track cost to run, so this is not one of the cheaper picks on electricity alone.
How much does the Costway ES10429US-WH cost per month?
About $12.05 a month, which is the $145 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 779 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $145 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Costway ES10429US-WH for its size?
1st 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_1144027_ES10429US-WH_111320240603251_1522289View certified dehumidifier listingsENERGY STAR data as of July 2026Costway and ES10429US-WH 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.