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What size dehumidifier do I need?

less than a minute readMar 09Wayne Archer
What size dehumidifier do I need?

Dehumidifiers are rated by how many pints of water they can remove from the air during a 24-hour period. To make sure you choose the right size of dehumidifier, consider two important things: how humid is the area you plan to dehumidify and how large is it?

First, see which of these descriptions best suits the area you want to dehumidify.

  • Moderately damp: Air sometimes feels damp and area has light, musty odor.

  • Very damp: Air always feels damp and has a musty odor.

  • Wet: Area feels and smells wet. Walls or floors sweat.

  • Extremely wet: Floors and walls are wet.


Then use the chart below to determine what size of dehumidifier would work best for you.

How damp is your space?2,000 or less sq.ft.2,000–2,500 sq.ft.2,500–3,500 sq.ft.3,500 or more sq.ft.
Moderately damp25 pint30 pint35 pint40 pint
Very damp30 pint35 pint45 pint50 pint
Wet35 pint40 pint50 pint60 pint
Extremely wet40 pint45 pint60 pint70 pint