Why You Need a Dehumidifier for your home!

Why You Need a Dehumidifier for your home!

Posted by Arthur Jackson on Jun 3rd 2024

Why Every Crawl Space and Basement Needs a Dehumidifier

When it comes to maintaining a healthy home environment, crawl spaces and basements often get overlooked. These areas are prone to high humidity levels, which can lead to serious issues, including mold growth. Understanding why a dehumidifier is essential for these spaces can save you from costly repairs and health problems down the road.

The Threat of Mold

Mold is a fast-growing problem that thrives in humid environments. Under the right conditions, mold spores can begin to grow within just 24 hours. The primary conditions that mold needs are moisture, warmth, and organic material to feed on, which are abundant in damp crawl spaces and basements.

Here’s how quickly mold can become a problem:

  1. Within Hours: Mold spores, which are always present in the air, land on a moist surface and start to germinate.
  2. Within 24 Hours: Colonies start to form, and mold becomes visible to the naked eye.
  3. Within Days: Mold continues to spread, causing structural damage to your home and health issues such as allergies and respiratory problems.

The Role of Moisture

Things like Heavy storms, Leaky Pipes, and humid days are a common source of moisture in crawl spaces and basements. Water can seep through foundation cracks or enter through vents and windows, creating a damp environment perfect for mold growth. Even without direct water intrusion, high humidity levels can be sufficient to foster mold.

The Limits of Encapsulation

Encapsulation is a popular method for protecting crawl spaces. It involves sealing off the area with a vapor barrier to prevent moisture from entering. While encapsulation is effective at keeping external moisture out, it does not address the humidity that naturally occurs within the space. This is where the dehumidifier comes into play.

Humidity: The Invisible Enemy

Humidity is often referred to as the "invisible enemy" because it can be present without obvious signs of water damage. High humidity levels can lead to condensation on surfaces, which then leads to mold growth. Encapsulation might block out external moisture, but it cannot control the humidity levels within the sealed space.

Why a Dehumidifier is Essential

A dehumidifier works by extracting excess moisture from the air, thereby lowering the humidity level. Here’s why every crawl space and basement should have one:

  1. Prevent Mold Growth: By maintaining a relative humidity level below 60%, a dehumidifier makes it difficult for mold to grow.
  2. Protect Structural Integrity: Excess moisture can weaken the structural components of your home, such as wooden beams and joists. A dehumidifier helps prevent this damage.
  3. Improve Air Quality: Mold and mildew can produce allergens and toxins that affect indoor air quality. A dehumidifier helps keep the air clean and healthy.
  4. Energy Efficiency: High humidity makes it harder for your HVAC system to maintain comfortable temperatures, leading to higher energy bills. A dehumidifier helps reduce this burden.

Choosing the Right Dehumidifier

When selecting a dehumidifier for your crawl space or basement, consider the following factors:

  • Capacity: Choose a unit with the capacity to handle the size of your space.
  • Drainage Options: Look for models with continuous drainage options to avoid the hassle of emptying a water reservoir.
  • Energy Efficiency: Energy Star-rated models are more efficient and cost-effective to run.


Encapsulation is a valuable step in protecting your crawl space or basement, but it is not a complete solution to humidity control. A dehumidifier is essential for maintaining a dry, mold-free environment. By investing in a good-quality dehumidifier, you can protect your home from the unseen dangers of high humidity, ensuring a healthier living space for you and your family. Don’t wait for mold to become a problem—take action now and keep your crawl space and basement dry and safe.