Damp Down, for dehumidifier math that survives the fine print

Why it surfaced

Damp Down focuses on a genuinely easy-to-miss detail: the 2019 DOE test moved from 80°F to 65°F, leaving older charts on a different scale. It publishes both versions, warns that the mismatch can lead to buying roughly 41% more machine than necessary, and pairs the calculator with guides on dew point, drainage, crawl spaces, and mold.

A dehumidifier-sizing site that turns floor area and dampness into required capacity on both rating scales.