Dehumidifier Size Calculator
How to Choose a Dehumidifier Size
Dehumidifiers are rated by pints of moisture removed per day (24 hours). A standard rule: 500 sq ft basement with high humidity needs a 30-50 pint unit. For very damp spaces (80%+ humidity), increase by 10-20 pints.
Key factors: room size, current vs target humidity, and whether the space is basement (needs 20-30% more capacity) or above ground. ENERGY STAR certified dehumidifiers are 15-25% more efficient.
Frequently Asked Questions
What size dehumidifier do I need for a 1,000 sq ft basement?
A 50-70 pint/day unit is recommended for a 1,000 sq ft basement. Basements need 20-30% more capacity than above-ground rooms due to moisture from walls and floor.
How is dehumidifier size measured?
By pints of moisture removed per 24 hours. Common sizes: 30-pint (small room), 50-pint (medium), 70-pint (large/basement). ENERGY STAR rated units are most efficient.
Where should I place a dehumidifier?
Center of the room, away from walls. Keep doors and windows closed. Empty the tank regularly or use a continuous drain hose. Ideal placement is 6-12 inches from walls.