Model
Moiswell Defender H150
Rank #480 means 479 of the 519 dehumidifier models we track cost less to run each year; the 46th efficiency percentile means it uses less energy for its size than 46% of those models.
What does the Moiswell Defender H150 cost to run per year?
The Moiswell Defender H150 holds rank #480 of 519 on running cost, at about $98 a year, a genuinely pricey result for the class. Efficiency-wise, once size is accounted for, it sits right around the class median, ahead of 46% of the models we track. At a IEF of 2.02, 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 Moiswell Aegis HP150 at $98/yr runs a little cheaper and the Moiswell Defender HP150 at $98/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 Moiswell Defender H150's $98/yr adds up to roughly $784 in electricity alone, before purchase price or repairs.
Also sold as: Airzentti ACD155P-PG100.
By the numbers
The Moiswell Defender H150 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 $98/yr, here is what the Moiswell Defender H150 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Moiswell Defender H150 costs about $980. That is roughly $340 more than the class median, which would run closer to $640 over the same ten years.
How the Moiswell Defender H150 compares
The dehumidifier class we track runs from $19 to $521 a year. At $98/yr, it runs about $34 a year above the class median of $64, and it is about $79 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 49.83 pints/day, the Moiswell Defender H150 is a large dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, and larger dehumidifier models generally cost more to run than smaller ones in the same class, simply because there is more to keep cold, spin, heat, or light. Beyond size, its IEF of 2.02, 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). 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 Moiswell Defender H150 cheap to run?
Its $98/yr running cost, rank #480 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 Moiswell Defender H150 cost per month?
About $8.2 a month, which is the $98 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: 530 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $98 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Moiswell Defender H150 for its size?
46th 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
| Rank | Model | Cost/yr |
|---|---|---|
| 489 | Moiswell Aegis HP15050 pints/day | $98 |
| 488 | Moiswell Aegis H15050 pints/day | $98 |
| 487 | Avahum AM160P49.83 pints/day | $98 |
| 486 | Avahum AM16049.83 pints/day | $98 |
| 485 | Airecoler Sailing S155A50 pints/day | $98 |
Source
ES_1152863_Defender H150_01142026134659_4223890View certified dehumidifier listingsENERGY STAR data as of July 2026Moiswell and Defender H150 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.