Dehumidifiers / Whole-home Dehumidifier
AprilaireE100
ENERGY STAR certified · Sep 2025 · Most Efficient
- Annual energy use
- 821 kWh/yr
- Integrated energy factor
- 2.35 L/kWh
- Water removal capacity
- 85 pints/day
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Cost to run a dehumidifier in every state
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How this is calculated
- Annual energy use is the figure ENERGY STAR lists for this model under typical test conditions. It is not measured in your home.
- Yearly cost = annual kWh × your rate. Monthly cost is the yearly cost divided by 12, a flat average. Five-year cost keeps the rate constant; prices will change.
- Statewide averages are not your utility’s tariff. Use your bill’s rate for a closer number.
- We do not estimate watts or hourly cost: the source data does not include them.
How it compares
Among 18 ENERGY STAR certified whole-home dehumidifier models with a similar water removal capacity (63.8 to 106.2 pints/day), this one ranks 12th lowest in annual energy use.
- Median of these models
- 628 kWh/yr
- This model vs the median
- +31%
- Uses less than
- 33% of them
Compared with every comparable model on the ENERGY STAR list, not only the ones published on this site. Same type, similar size.
Same type and size, lower energy use
| Model | kWh/yr | Difference |
|---|---|---|
| Santa Fe 4047100 | 419 | 419 kWh |
| Honeywell Home DHM090R4000 | 556 | 556 kWh |
| Honeywell Home DHM120R4000/U | 556 | 556 kWh |
| Santa Fe 4047200 | 565 | 565 kWh |
| MOISWELL Admiral W160 | 628 | 628 kWh |
Yearly cost by state
Same 821 kWh/yr at each state’s average residential price (2026-07).
Comparable models
Same type, within 25% of this model’s water removal capacity.
Specifications
- Annual energy use
- 821 kWh/yrENERGY STAR integrated annual energy consumption, typical conditions
- Integrated energy factor
- 2.35 L/kWhIntegrated Energy Factor
- Water removal capacity
- 85 pints/dayAppendix X1 test condition
- Type
- Whole-home Dehumidifier
- Case volume (whole-home)
- 3.3 ft³
- Refrigerant
- R32
- Refrigerant charge
- 13.5 oz
- Connected
- No
- UPC
- 686720006500
- Markets
- United States
- Available on market
- 2021-01-29
- ENERGY STAR ID
- 4510067
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Frequently asked questions
How much electricity does the Aprilaire E100 use?
ENERGY STAR lists 821 kWh per year under typical test conditions, covering dehumidifying, fan and standby modes. Your use will differ with humidity, run time and room conditions.
How much does it cost to run?
At statewide average residential prices, the listed annual use costs about $104.43 in Louisiana and $394.08 in Hawaii (EIA, 2026-07). Your own utility rate may be different; enter it in the calculator.
How does the Aprilaire E100 compare with similar models?
Among 18 ENERGY STAR certified whole-home dehumidifier models with a similar water removal capacity, it ranks 12th lowest in annual energy use. Its 821 kWh per year is 31% above the median of 628 kWh.
What does the integrated energy factor mean?
It is litres of water removed per kWh. This model is listed at 2.35 L/kWh. A higher number means more water removed per unit of electricity. It is not a measure of watts.
Learn more
Methodology and sources
Model data comes from the ENERGY STAR Certified Dehumidifiers dataset (EPA). Electricity prices are statewide average residential prices from the U.S. EIA, latest period July 2026. Values are stored locally and refreshed by scheduled imports. Missing values are left blank, never estimated.