Model
Multistar MDHP5079US*
Rank #354 means 353 of the 519 dehumidifier models we track cost less to run each year; the 91st efficiency percentile means it uses less energy for its size than 91% of those models.
What does the Multistar MDHP5079US* cost to run per year?
Do the math and the Multistar MDHP5079US*'s $93/yr puts it at rank #354 of 519, on the pricier side of the class. Normalized for capacity, it ranks ahead of 91% of dehumidifier models we track on efficiency, a genuinely strong showing. 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 Waykar CHWA150PE at $93/yr runs a little cheaper and the Aeric AERD501P at $93/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 Multistar MDHP5079US*'s $93/yr adds up to roughly $744 in electricity alone, before purchase price or repairs.
By the numbers
The Multistar MDHP5079US* 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 $93/yr, here is what the Multistar MDHP5079US* adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Multistar MDHP5079US* costs about $930. That is roughly $290 more than the class median, which would run closer to $640 over the same ten years.
How the Multistar MDHP5079US* compares
The dehumidifier class we track runs from $19 to $521 a year. At $93/yr, it runs about $29 a year above the class median of $64, and it is about $74 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 49.48 pints/day, the Multistar MDHP5079US* is a large dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, among dehumidifier models, bigger capacity is the most common reason a running-cost figure lands on the high side, all else being equal. Beyond size, its IEF of 2.01, above the class median of 2.01, is the class's own efficiency yardstick, integrated energy factor, and it is what separates two similarly sized models with different running costs.
- 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 Multistar MDHP5079US* cheap to run?
Not especially. At $93 a year it ranks #354 of 519 dehumidifier models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Multistar MDHP5079US* cost per month?
Roughly $7.73/mo, spreading the $93/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 500 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $93 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Multistar MDHP5079US* for its size?
91st percentile once size is factored in. That means its size-adjusted efficiency is a real factor in the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
Source
ES_1139871_MDHP5079US*_102320250216292_7944123View certified dehumidifier listingsENERGY STAR data as of July 2026Multistar and MDHP5079US* 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.