Model
Bosch Dry 4000
Rank #280 means 279 of the 519 dehumidifier models we track cost less to run each year; the 89th efficiency percentile means it uses less energy for its size than 89% of those models.
What does the Bosch Dry 4000 cost to run per year?
Ranking #280 of 519, the Bosch Dry 4000 runs at roughly $68 a year, neither the cheapest nor the priciest in its class. Adjusted for its ief, it is more efficient than 89% of dehumidifier models we track, a strong result once size is taken into account. At a IEF of 2.01, 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 Hisense OSD3526 at $67/yr runs a little cheaper and the Aux ADT35V1 at $68/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 Bosch Dry 4000's $68/yr adds up to roughly $544 in electricity alone, before purchase price or repairs.
By the numbers
The Bosch Dry 4000 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 $68/yr, here is what the Bosch Dry 4000 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Bosch Dry 4000 costs about $680. That is roughly $40 more than the class median, which would run closer to $640 over the same ten years.
How the Bosch Dry 4000 compares
The dehumidifier class we track runs from $19 to $521 a year. At $68/yr, it runs about $4 a year above the class median of $64, and it is about $49 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 35.94 pints/day, the Bosch Dry 4000 is a mid-size dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, putting it squarely in the middle of the class on the size lever that drives most of the cost. Its IEF of 2.01, above 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). 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 Bosch Dry 4000 cheap to run?
It is about average. At $68 a year it ranks #280 of 519 dehumidifier models we track, close to the middle of its class on running cost.
How much does the Bosch Dry 4000 cost per month?
Roughly $5.65/mo, spreading the $68/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 365 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $68 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Bosch Dry 4000 for its size?
89th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_16809_Dry 4000_111420250843729_4993126View certified dehumidifier listingsENERGY STAR data as of July 2026Bosch and Dry 4000 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.