- Cost in the United States
- $47 a year
- Capacity
- 25 pints/day
- Pump
- Not published
3 picks that fit
How we pick- Cost in the United States
- $62 a year
- Capacity
- 35 pints/day
- Pump
- Not published
- Cost in the United States
- $87 a year
- Capacity
- 50 pints/day
- Pump
- Not published
How we pick. One pick per level, from the top of its ENERGY STAR range: 25–30 pints when damp, 35–40 when very damp, and 45–50 when wet. Each is sold by a store we link to. The lowest yearly energy use wins, then the higher efficiency. Stores never pay for a place.
Three levels of damp
1,000 sq ft, by how damp it is
Check the walls and the floor before you pick a level. Each cost applies the average home electricity price in the United States to the median EPA yearly energy of the certified portables in the range.
Damp · 50–75% humidity
20–30 pints a day
$52 a year at the median, 285 kWh
157 modelsVery damp · 75–90% humidity
25–40 pints a day
$63 a year at the median, 343 kWh
125 modelsWet · 90–100% humidity
30–50 pints a day
$93 a year at the median, 507 kWh
243 models
Sizes: ENERGY STAR sizing table, read Oct 5, 2026. Models and energy: EPA list of Oct 15, 2026.
Questions
What people ask before buying
What size dehumidifier for a 1,000 sq ft basement?
Read the humidity with a hygrometer, then find your row in the tiles above. Sweating walls or seeping water put you in the wet row, at 30–50 pints a day, whatever the reading.
ENERGY STAR sizing guidance, read Oct 5, 2026How do I measure square footage?
Multiply the length of the floor by its width: a 25 × 40 ft basement is 1,000 sq ft. For an L-shaped space, add up the rectangles.
What does a very damp basement cost to dry?
A typical certified 25–40 pint portable uses 343 kWh a year, the EPA median. That comes to $63 a year at the U.S. average price, and $44 in Louisiana, the cheapest state.
EPA list, Oct 15, 2026 · EIA, July 2026Before you order
Check before you buy
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Related
Other guides
Dehumidifier for 1,500 sq ftSize guideDehumidifier for 2,000 sq ftSize guideBasement dehumidifierGuideSize calculatorTool
Data: U.S. EPA certified dehumidifiers list (updated Oct 15, 2026, checked Oct 16, 2026); U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A (July 2026). How we compare · Report an error