How to Choose a Dehumidifier for Your Crawl Space

Crawl spaces are often the forgotten areas of a home, tucked away beneath the main structure. However, they play a crucial role in maintaining a healthy and efficient home environment. Excess moisture in crawl spaces can lead to mold growth, structural damage, and affect indoor air quality. A dehumidifier is a valuable tool for combating these issues. In this article, we'll explore the factors to consider when choosing a dehumidifier specifically designed for your crawl space, ensuring a dry, healthy, and functional space.

Understanding the Importance of a Dehumidifier in Your Crawl Space:
Crawl spaces are prone to high humidity levels, making them ideal breeding grounds for mold, mildew, and pests. By installing a dehumidifier, you can maintain optimal humidity levels, prevent mold growth, and protect your home's structure and air quality.

Sizing Your Dehumidifier:
Crawl spaces vary in size, and choosing the right-sized dehumidifier is crucial for efficient moisture removal. Measure the square footage and height of your crawl space to determine the correct capacity (pints per day) your dehumidifier needs to effectively control moisture.

Consider the Dehumidifier Type:
When it comes to crawl spaces, two main types of dehumidifiers are prevalent: portable and whole-house. Portable dehumidifiers are more suitable for smaller crawl spaces, while whole-house dehumidifiers are designed for larger areas, providing a comprehensive solution.

Evaluate Drainage Options:
Crawl spaces may not have a dedicated floor drain, so assessing drainage options is essential. Dehumidifiers come with various drainage mechanisms: gravity drainage, condensate pumps, or utilizing existing plumbing. Choose a dehumidifier with a drainage option that suits your crawl space's layout and needs.

Energy Efficiency:
Opt for an energy-efficient dehumidifier to ensure effective moisture removal without significantly impacting your utility bills. Look for ENERGY STAR certified models that meet energy efficiency guidelines while providing reliable performance.

Consider Humidity Control Settings:
A good dehumidifier for your crawl space should offer customizable humidity control settings. This allows you to set your desired humidity level, ensuring the dehumidifier operates efficiently to maintain the optimal moisture balance.

Durability and Build Quality:
Crawl spaces can be challenging environments due to potential moisture and temperature fluctuations. Choose a dehumidifier made from high-quality, durable materials to withstand these conditions and ensure a long-lasting solution.


Investing in a dehumidifier for your crawl space is a wise decision to maintain a healthy and structurally sound home. By understanding the unique requirements of crawl spaces and considering factors like sizing, drainage options, energy efficiency, and durability, you can select the ideal dehumidifier to effectively combat excess moisture.