Dehumidifier Sizing

12 pints for 500 sq ft above-grade room — Very damp

Modeled from DOE/ENERGY STAR guidance; see methodology.

Recommendation: 12 pints/day (22‑pint class)

  • Space type: Above-grade Room
  • Size: 500 sq ft
  • Moisture condition: Very damp

When to size up

If the space often stays below ~68°F, connects to other damp rooms, or you see frequent condensation, consider sizing up from 22‑pint class to the next class.

Portable dehumidifiers are rated at 65°F under DOE 2019/2020. Cooler air reduces capacity; basements and crawls often benefit from moving up one class.