Dehumidifier Size Calculator: What Size Dehumidifier Do I Need?

Calculate the right dehumidifier size by entering your room details below.

List of the Top 10 Best Dehumidifier:

# Image Product Link
1 Dehumidifier,TABYIK 35 OZ Small Dehumidifiers for Room for Home, Quiet with Auto Shut Off, Dehumidifiers for Bedroom (280 sq. ft), Bathroom, RV, Closet Dehumidifier,TABYIK 35 OZ Small Dehumidifiers for Room for Home, Quiet with Auto Shut Off, Dehumidifiers for Bedroom (280 sq. ft), Bathroom, RV, Closet View on Amazon
2 4500 Sq.Ft Most Efficient Energy Star 2025 Dehumidifier,AEOCKY Max 80 Pint/D(Standard 56Pint/D) Smart Compressor Dehumidifier with Drain Hose, Intelligent Humidistat,for Basement,Bedroom,Home,Bathroom 4500 Sq.Ft Most Efficient Energy Star 2025 Dehumidifier,AEOCKY Max 80 Pint/D(Standard 56Pint/D) Smart Compressor Dehumidifier with Drain Hose, Intelligent Humidistat,for Basement,Bedroom,Home,Bathroom View on Amazon
3 BREEZOME 60 OZ Dehumidifiers for Home, Dual-Semiconductor Quiet Dehumidifier with Timer Sleep Mode Auto-Off 7 Colors Light Portable Small Dehumidifiers for Bathroom, Cloakroom, RV BREEZOME 60 OZ Dehumidifiers for Home, Dual-Semiconductor Quiet Dehumidifier with Timer Sleep Mode Auto-Off 7 Colors Light Portable Small Dehumidifiers for Bathroom, Cloakroom, RV View on Amazon
4 Onsekin Dehumidifier for Home, 1000 sq.ft Dehumidifier with Auto Shut Off, 7-Color LED Light Built-in Aromatherapy Diffuser, Ultra-Quiet Dehumidifiers for Bedroom, Bathroom, Basement (Pale White) Onsekin Dehumidifier for Home, 1000 sq.ft Dehumidifier with Auto Shut Off, 7-Color LED Light Built-in Aromatherapy Diffuser, Ultra-Quiet Dehumidifiers for Bedroom, Bathroom, Basement (Pale White) View on Amazon
5 SANVINDER Dehumidifiers for Home, 25oz Dehumidifier for Bedroom with Auto-off, Ultra Quiet Energy Saving for Bathroom Closet Wardrobe Office RV (285sq.ft) SANVINDER Dehumidifiers for Home, 25oz Dehumidifier for Bedroom with Auto-off, Ultra Quiet Energy Saving for Bathroom Closet Wardrobe Office RV (285sq.ft) View on Amazon
6 Dehumidifier 1800ML 63OZ Small Dehumidifier for Home 230 Ft² Safety Dehumidifiers Adjustable 10 Color Lights 5 Timers 3 Setting Modes Auto Shut Off Protection Low Noise For Bedroom Bathroom Dehumidifier 1800ML 63OZ Small Dehumidifier for Home 230 Ft² Safety Dehumidifiers Adjustable 10 Color Lights 5 Timers 3 Setting Modes Auto Shut Off Protection Low Noise For Bedroom Bathroom View on Amazon
7 ToLife Dehumidifier for Home, 1000 sq.ft Dehumidifiers for Basement Bedroom Bathroom with 95 OZ Water Tank, Auto Shut Off 7 Colors LED Light, Grey ToLife Dehumidifier for Home, 1000 sq.ft Dehumidifiers for Basement Bedroom Bathroom with 95 OZ Water Tank, Auto Shut Off 7 Colors LED Light, Grey View on Amazon
8 NineSky Dehumidifiers for Home, 95 OZ Water Tank, (1000 sq.ft) Dehumidifiers for Bathroom Bedroom Basement with Auto Shut Off,7 Colors LED Light(Gray) NineSky Dehumidifiers for Home, 95 OZ Water Tank, (1000 sq.ft) Dehumidifiers for Bathroom Bedroom Basement with Auto Shut Off,7 Colors LED Light(Gray) View on Amazon
9 Windangel 44oz(1.3L) Small Dehumidifier for Home, Auto-Off Quiet Portable Dehumidifier with 3 Modes, 10 Color Lights, 4 Timer Settings for Bedroom Bathroom Closet (215 sq.ft) Windangel 44oz(1.3L) Small Dehumidifier for Home, Auto-Off Quiet Portable Dehumidifier with 3 Modes, 10 Color Lights, 4 Timer Settings for Bedroom Bathroom Closet (215 sq.ft) View on Amazon
10 NineSky Dehumidifiers for Home, 95 OZ Water Tank, (1000 sq.ft) Dehumidifiers for Bathroom Bedroom Basement with Auto Shut Off,7 Colors LED Light(White) NineSky Dehumidifiers for Home, 95 OZ Water Tank, (1000 sq.ft) Dehumidifiers for Bathroom Bedroom Basement with Auto Shut Off,7 Colors LED Light(White) View on Amazon

What is a Dehumidifier?

A dehumidifier is a device designed to reduce and maintain the level of humidity in the air, typically for health, comfort, or preservation purposes. Dehumidifiers are widely used in areas where excess moisture is present, such as in basements, bathrooms, and laundry rooms.

Why Do You Need a Dehumidifier?

Excess humidity can cause mold, mildew, musty odors, and can affect your health by causing respiratory issues. Dehumidifiers can help prevent these issues by maintaining optimal humidity levels, which range between 30% and 50% for most indoor spaces.

How to Choose the Right Dehumidifier Size?

The size of the dehumidifier you need depends on several factors including the size of the room, the humidity level, and the room's height. Generally, the more humid the room, the more powerful the dehumidifier should be.

Common Dehumidifier Sizes

Room Size Recommended Dehumidifier Capacity Area (sq. ft.)
Small Room (Under 500 sq. ft.) 30 - 40 pints per day Under 500 sq. ft.
Medium Room (500 - 1500 sq. ft.) 40 - 50 pints per day 500 - 1500 sq. ft.
Large Room (1500 - 2500 sq. ft.) 50 - 60 pints per day 1500 - 2500 sq. ft.
Extra Large Room (2500+ sq. ft.) 60 - 70 pints per day 2500+ sq. ft.

Benefits of Using a Dehumidifier

Improved Health

  • Reduces the risk of respiratory issues
  • Helps prevent mold growth
  • Improves sleep quality by reducing allergens

Protects Your Property

  • Prevents mold and mildew damage
  • Protects wood and furniture from warping
  • Preserves electronics and other sensitive items

Increased Comfort

  • Eliminates musty odors
  • Prevents the feeling of dampness
  • Helps maintain a comfortable indoor climate

Important Factors in Dehumidifier Sizing

1. Room Size

The size of the room is one of the most important factors in determining the dehumidifier size. Larger rooms with higher square footage require dehumidifiers with a greater capacity.

2. Room Humidity Level

If your room is in a humid or very humid environment, you will need a more powerful dehumidifier to maintain comfort and prevent mold growth.

3. Ceiling Height

Taller ceilings increase the amount of air that needs to be dehumidified. Rooms with higher ceilings may require a more powerful dehumidifier.

4. Room Location

Basements and other areas with higher moisture levels may require a dehumidifier with a higher pint-per-day capacity to cope with the excess humidity.

How Do Dehumidifiers Work?

Dehumidifiers work by drawing in air, cooling it, and then collecting the water vapor into a reservoir or draining it away. The dry air is then released back into the room, lowering the overall humidity level.

Frequently Asked Questions About Dehumidifier Sizing

How do I determine the right dehumidifier size for my room?

To size a dehumidifier, consider the room size (in square feet), humidity level, ceiling height, and the room's location (basement, living area, etc.). Use these factors to select the appropriate pint capacity.

What's the difference between pints and liters?

Pints measure the volume of water a dehumidifier can remove per day, while liters are a metric measurement. 1 pint = 0.473 liters.

Can I use a dehumidifier in a large basement?

Yes, for large basements, you’ll need a more powerful dehumidifier with a higher capacity, typically between 60 to 70 pints per day, depending on the size and humidity level.

Should I run my dehumidifier continuously?

You can run your dehumidifier continuously if needed, especially in very humid conditions, but it’s always best to adjust it to your specific needs for energy efficiency.