Model
Argendon Sandidry Pro35C
Rank #73 means 72 of the 519 dehumidifier models we track cost less to run each year; the 39th efficiency percentile means it uses less energy for its size than 39% of those models.
What does the Argendon Sandidry Pro35C cost to run per year?
At $45 a year to run, the Argendon Sandidry Pro35C is among the cheapest dehumidifier models we track, ranking #73 of 519. Its 39th size-adjusted efficiency percentile is a step behind the class median, though not among the weakest results. Its IEF of 1.9 reflects integrated energy factor, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Alorair Sentinel Pro35X at $45/yr runs a little cheaper and the Midea MAD20S1QWT at $46/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 Argendon Sandidry Pro35C's $45/yr adds up to roughly $360 in electricity alone, before purchase price or repairs.
Also sold as: Alorair Sentinel Pro35X.
By the numbers
The Argendon Sandidry Pro35C 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 $45/yr, here is what the Argendon Sandidry Pro35C adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Argendon Sandidry Pro35C costs about $450. That is roughly $190 less than the class median, which would run closer to $640 over the same ten years.
How the Argendon Sandidry Pro35C compares
The dehumidifier class we track runs from $19 to $521 a year. At $45/yr, it runs about $19 a year cheaper than the class median of $64, and it is about $26 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 21.27 pints/day, the Argendon Sandidry Pro35C is a small dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. Beyond size, its IEF of 1.9, below 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 Argendon Sandidry Pro35C cheap to run?
Yes, relatively. At $45 a year it ranks #73 of 519 dehumidifier models we track, in the cheaper part of its class to run.
How much does the Argendon Sandidry Pro35C cost per month?
Roughly $3.74/mo, spreading the $45/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 242 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $45 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Argendon Sandidry Pro35C for its size?
39th 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_1145148_Sandidry Pro35C_01062025131807_5022242View certified dehumidifier listingsENERGY STAR data as of July 2026Argendon and Sandidry Pro35C 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.