Dehumidifier Sizing Calculator

How This Calculator Works

Proper dehumidification is critical for structural drying. Consumer-grade dehumidifiers (30–70 pints/day) are useful for maintenance but inadequate for water damage restoration. Professionals use industrial LGR (Low Grain Refrigerant) dehumidifiers rated at 70–200+ pints/day, paired with air movers for optimal evaporation.

Sizing Guidelines

• Light dampness — 0.1 pints per sq ft/day baseline
• Moderate saturation — 0.14 pints per sq ft/day baseline
• Heavy flooding — 0.2+ pints per sq ft/day baseline
• Basement spaces — Add 20% capacity for below-grade moisture
• HVAC integration — Use return air ducts to improve air circulation