Dehumidifier Size Calculator

Find the ideal dehumidifier size for your room. Enter your room dimensions and other factors to determine the best dehumidifier capacity in pints per day (PPD).

Room and Dehumidifier Details

The length of your room in feet
The width of your room in feet
The height of your ceiling in feet

List of the Top 5 Best Dehumidifier:

# Image Product Link
1 Yaufey 80 Pints Energy Star Dehumidifier for Home, Basement and Large Room up to 5000 Sq. Ft., with Drain Hose, Timer, Intelligent Humidity Control and Large Water Tank Yaufey 80 Pints Energy Star Dehumidifier for Home, Basement and Large Room up to 5000 Sq. Ft., with Drain Hose, Timer, Intelligent Humidity Control and Large Water Tank View on Amazon
2 Waykar 80 Pint Energy Star Dehumidifier for Home, Basement, Large Rooms up to 5,000 Sq. Ft. - Auto Defrost, Ultra Quiet(40 dB), Auto Comfort Mode, with Drain Hose & Water Tank Waykar 80 Pint Energy Star Dehumidifier for Home, Basement, Large Rooms up to 5,000 Sq. Ft. - Auto Defrost, Ultra Quiet(40 dB), Auto Comfort Mode, with Drain Hose & Water Tank View on Amazon
3 4,500 Sq.Ft Most Efficient Energy Star 2024 Dehumidifier,Vellgoo 52 Pint/Day Dehumidifier for Basement with Drain Hose, Smart Humidity Control, for Home, Bedroom, Bathroom, Garage 4,500 Sq Ft Most Efficient Energy Star 2024 Dehumidifier,Vellgoo 52 Pint/Day Dehumidifier for Basement with Drain Hose, Smart Humidity Control, for Home, Bedroom, Bathroom, Garage View on Amazon
4 Waykar 2000 Sq. Ft Dehumidifier for Home and Basements, with Auto or Manual Drainage, 0.66 Gallon Water Tank Capacity Waykar 2000 Sq Ft Dehumidifier for Home and Basements, with Auto or Manual Drainage, 0.66 Gallon Water Tank Capacity View on Amazon
5 Bicepos 2000 Sq.Ft Dehumidifier for Basement, 30 Pints Dehumidifiers for Home with Drain Hose, 0.52 Gal Water Tank, Intelligent Humidity Control, Auto Shut Off, For Large Rooms and Home Bicepos 2000 Sq.Ft Dehumidifier for Basement, 30 Pints Dehumidifiers for Home with Drain Hose, 0.52 Gal Water Tank, Intelligent Humidity Control, Auto Shut Off, For Large Rooms and Home View on Amazon

Understanding Dehumidifier Sizing

Choosing the right size dehumidifier is essential to efficiently reduce humidity levels in your room. An undersized dehumidifier will not effectively reduce moisture, while an oversized one may consume more energy than necessary.

How to Calculate Dehumidifier Size

The size of a dehumidifier is measured in pints per day (PPD), indicating the amount of moisture it can remove from the air in a 24-hour period. Here's a guide to help you determine the right capacity for your room:

Factor Adjustment
Base Calculation 1 pint per square foot of room area
Ceiling Height Increase by 20% for ceilings over 8 feet
Humidity Level Increase by 20% for moderate, 40% for high humidity
Room Type Increase by 10-20% for basements or kitchens

Common Dehumidifier Sizes

Here are some standard dehumidifier sizes and their typical applications:

PPD (Pints per Day) Room Size (square feet) Typical Use
30 300 - 500 Small to medium rooms
50 500 - 800 Medium to large rooms
70 800 - 1,500 Large rooms or basements
90 1,500+ Extra large rooms or industrial spaces

Frequently Asked Questions

What happens if I choose the wrong dehumidifier size?

An undersized dehumidifier will struggle to reduce the humidity, while an oversized dehumidifier may waste energy and increase electricity costs.

How do I measure my room for a dehumidifier?

Measure the length and width of your room in feet, then multiply them to get the area in square feet. Don't forget to measure the ceiling height, and account for room type and humidity level.

Can I use this calculator for whole-house dehumidifiers?

This calculator is designed for room-specific dehumidifiers. For whole-house dehumidifiers, consult an HVAC professional for accurate sizing.

What is the difference between PPD and liters?

PPD refers to the amount of moisture removed per day in pints, while liters is a metric measurement (1 pint ≈ 0.473 liters). Both units describe dehumidifier capacity.