Appliances / Dehumidifiers / Aprilaire
Aprilaire E100
85 pints/day · Whole-home Dehumidifier dehumidifier
Check the price at the store, then add $1,195 of electricity to get the true cost. We may earn a commission if you buy through these links; as an Amazon Associate we earn from qualifying purchases.
- Price. Check what it costs at the store.
- Plus running cost. Add $1,195 of electricity over 8 years. That is the part the price tag hides.
- Compare. Pick your state below, then check the cheaper-to-run models of the same size.
About the Aprilaire E100
The Aprilaire E100 is a 85 pints/day whole-home dehumidifier dehumidifier certified by ENERGY STAR. Its official test figure is 821 kWh of electricity a year, which at the U.S. average price of 18.19¢ per kWh comes to $149 a year, or $1,195 over a typical 8-year life.
Among 21 whole-home dehumidifier models it ranks #13 for running cost. The cheapest model of this type would save $585 in electricity over 8 years, though it may differ in size and features.
If you want the same type and a similar size for less to run, the Santa Fe 4047100 uses 419 kWh a year and would save about $585 over 8 years.
Cost to run where you live
821 kWh a year (ENERGY STAR test figure) × 18.19¢ per kWh, the average residential price in the U.S. for Jan–Aug 2026 (EIA). Your bill depends on your utility and how you use it.
Cheaper to run, same type and size
Or see every large (45 pints a day and up) model ranked.
| Santa Fe 4047100 | 85.62 pints/day | $76/yr | saves $585 |
| Honeywell Home DHM120R4000/U | 94.33 pints/day | $101/yr | saves $386 |
Specs
| Brand | Aprilaire |
| Model | E100 |
| Type | Whole-home Dehumidifier |
| Energy use | 821 kWh / year |
| Size | 85 pints/day |
| Water removed | 85.00 pints/day |
| Efficiency (IEF) | 2.35 L/kWh |
| Refrigerant | R32 |
| Most efficient | Yes |
Specs and energy use from the ENERGY STAR certified products list (U.S. EPA). An asterisk in a model number stands for colour or finish codes. HouseholdLeak is not affiliated with ENERGY STAR or the EPA.
Questions people ask
How much does the Aprilaire E100 cost to run?
About $149 a year at the U.S. average electricity price (18.19¢/kWh), based on its ENERGY STAR rating of 821 kWh a year. In a state with expensive power it can be much more; pick your state on this page to see your number.
How much will the Aprilaire E100 cost in electricity over its life?
About $1,195 over 8 years, a typical life for a dehumidifier. Add that to the price you pay to get the true cost to own.
Is the Aprilaire E100 energy efficient?
It is ENERGY STAR certified, which means it meets the EPA's efficiency requirements for its type.
Is there a cheaper dehumidifier to run of the same type and size?
Yes. The Santa Fe 4047100 uses 419 kWh a year, about $585 less in electricity over 8 years.
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