How dehumidifier sizing works
Area, moisture factors, saturation vs AHAM.
Basement and crawl-space sizing
Dehumidifier pints calculator
Enter floor area and moisture load. Get effective area, then a 70 / 125 / 156 / 180 pints/day class — or NO_MATCH. Saturation ratings; AHAM is lower.
Basement and crawl-space sizing
Result
Effective area = floor × moisture (1.0 / 1.25 / 1.5). Classes: 70 · 125 · 156 · 180 pints/day saturation.
From measurement to decision
Open the full calculator
Same tool with room for examples.
70 / 125 / 156 / 180 classes
When each class fits — and when none do.
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