Aprilaire E100 running cost
$150.33/year
The Aprilaire E100 is rated at 821 kWh per year (ENERGY STAR test conditions). At the US average residential price of 18.3¢/kWh (July 2026), that is about $150.33 a year, or $12.53 a month.
How it compares
Among 21 certified large (40+ pints/day) whole-home dehumidifiers (same size band), it ranks #13 for lowest running cost (class median $114.99/year). Water removal (pints/day, DOE test): 85.
Cheaper-to-run dehumidifiers in the same size band
- Santa Fe 4047100 — 419 kWh/yr, $76.72/yr
- Honeywell Home DHM065R4000/U — 503 kWh/yr, $92.10/yr
- Honeywell Home DHM090R4000 — 556 kWh/yr, $101.80/yr
- Honeywell Home DHM120R4000/U — 556 kWh/yr, $101.80/yr
- Santa Fe 4047200 — 565 kWh/yr, $103.45/yr
Specifications
| Type | Whole-home Dehumidifier |
|---|---|
| Efficiency (L/kWh) | 2.35 |
| Refrigerant | R32 |
| Smart / connected | No |
| On market since | 2021-01-29 |
| ENERGY STAR Most Efficient | Yes |
| Annual energy use | 821 kWh |
Source: ENERGY STAR certified dehumidifiers dataset, record 4510067. Real-world use depends on hours of operation, settings and climate.
Cost to run in every state
| State | Price | Per year |
|---|---|---|
| Louisiana | 12.7¢ | $104.43 |
| Nevada | 12.8¢ | $104.84 |
| Utah | 13.1¢ | $107.72 |
| North Dakota | 13.4¢ | $110.10 |
| Tennessee | 13.7¢ | $112.56 |
| Idaho | 13.7¢ | $112.72 |
| Nebraska | 13.8¢ | $113.13 |
| Kentucky | 13.8¢ | $113.38 |
| Arkansas | 14.3¢ | $117.65 |
| Oklahoma | 14.3¢ | $117.81 |
| Wyoming | 14.4¢ | $117.90 |
| Mississippi | 14.5¢ | $119.37 |
| Washington | 14.7¢ | $120.77 |
| Montana | 15.0¢ | $123.07 |
| Florida | 15.0¢ | $123.40 |
| North Carolina | 15.2¢ | $124.46 |
| Kansas | 15.3¢ | $125.37 |
| South Dakota | 15.4¢ | $126.19 |
| Arizona | 15.4¢ | $126.27 |
| South Carolina | 15.5¢ | $127.01 |
| West Virginia | 15.8¢ | $129.55 |
| Texas | 15.9¢ | $130.37 |
| Oregon | 16.0¢ | $131.11 |
| Iowa | 16.0¢ | $131.28 |
| Missouri | 16.1¢ | $132.10 |
| New Mexico | 16.1¢ | $132.10 |
| Georgia | 16.3¢ | $133.58 |
| Alabama | 16.4¢ | $134.64 |
| Indiana | 16.7¢ | $137.35 |
| Colorado | 17.0¢ | $139.57 |
| Minnesota | 17.4¢ | $143.26 |
| Virginia | 17.6¢ | $144.09 |
| Delaware | 18.5¢ | $151.72 |
| Wisconsin | 19.1¢ | $156.48 |
| Illinois | 19.2¢ | $157.80 |
| Ohio | 19.4¢ | $159.68 |
| Maryland | 21.4¢ | $175.78 |
| Pennsylvania | 21.7¢ | $178.32 |
| Michigan | 23.1¢ | $189.24 |
| Vermont | 23.8¢ | $194.99 |
| Connecticut | 24.2¢ | $198.35 |
| New Jersey | 25.2¢ | $206.81 |
| District of Columbia | 25.2¢ | $206.97 |
| New Hampshire | 26.6¢ | $218.39 |
| Rhode Island | 28.3¢ | $232.26 |
| Alaska | 28.8¢ | $236.69 |
| New York | 29.9¢ | $245.48 |
| Massachusetts | 30.5¢ | $250.32 |
| Maine | 32.4¢ | $266.09 |
| California | 33.6¢ | $275.94 |
| Hawaii | 48.0¢ | $394.08 |