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What Size Dehumidifier Do I Need for My Basement?

Damp basement with a wet floor

Maintaining a dry, healthy basement is vital for your home’s overall well-being and energy efficiency.

A dehumidifier is key to controlling moisture levels, preventing mold growth, and enhancing air quality.

However, a dehumidifier alone isn’t enough; it must be part of a comprehensive waterproofing system. In this guide, you’ll discover how to select the perfect size dehumidifier for your basement.

The Benefits of Dehumidification

Dehumidification addresses several critical issues in your home:

Closeup of a dehumidifier
  • Prevents Mold and Mildew: Reduces excess moisture, preventing mold and mildew growth that can cause health problems and damage your property.
  • Eliminates Musty Odors: Removes unpleasant, musty smells often associated with damp environments.
  • Protects Structural Integrity: Prevents wood rot and corrosion of metal components, safeguarding your home’s structure.
  • Improves Comfort: Maintaining optimal humidity levels contributes to a healthier, more comfortable living space.

Understanding Different Types of Dehumidifiers

Each dehumidifier has unique features:

  • Manual Emptying vs. Self-Draining: Some dehumidifiers require you to empty the water tank manually, while others are self-draining and connect directly to a drainage system.
  • Air Cleaning and Filtering: Some units have air cleaning and filtering capabilities, while others do not.
  • Capacity: Every dehumidifier measures how much water it can remove from the air daily, usually measured in pints/day.

Determining the Right Size Dehumidifier for Your Basement

It’s challenging to determine the exact size dehumidifier you need without a full inspection and understanding of your basement’s needs. However, here are some general guidelines based on pints/day and basement size:

  • 500 to 1,500 sq. ft.: 50-60 pints/day
  • 1,500 to 2,500 sq. ft.: 70-80 pints/day
  • 2,500 sq. ft. and above: 80+ pints/day

These are rough estimates, and your specific needs may vary based on the humidity levels and conditions of your basement.

The Right Dehumidifier: AquaStop™ Basement Air System

Groundworks installs the AquaStop™ Basement Air System, which offers:

Groundworks AquaStopâ„¢ Basement Air System
  • High Capacity: Removes up to 100 pints of water from the air daily.
  • Efficient Air Circulation: Circulates over 300 cubic feet of dry air every minute.
  • Self-Draining: No need to manually empty water tanks.
  • Air Filtration: Includes an air filter to improve air quality.
  • Energy Efficient: EnergyStar-certified and designed for large basements.

Why Groundworks is The Best Choice for Dehumidifier Installation

Groundworks inspector meeting with homeowner

Groundworks is the right choice for your dehumidifier installation and overall basement waterproofing needs. With experience repairing and waterproofing 1.5 million homes across the country, we have the expertise to handle any job.

Our team provides free evaluations to assess your basement’s specific needs and recommend the best solutions. Contact us today to schedule your free inspection.


Many modern dehumidifiers are EnergyStar-certified, meaning they meet energy efficiency guidelines set by the EPA and can help reduce energy costs.

Use a hygrometer, a device that measures humidity, to determine the moisture level in your basement.

While a dehumidifier can help reduce moisture after flooding, it’s not a solution for flooding issues. A proper waterproofing system is necessary for severe water problems.

Leah Leitow

Leah Leitow

Content Writer

Leah is a Content Writer for Groundworks with nearly ten years of experience working in the foundation repair industry. Her experience ranges from working with homeowners to find the right solution to training inspectors and staff. In her background as a Michigan journalist, she gained invaluable insight into people's lives throughout our state. Leah lives in metro Detroit with her husband and two sons.