Collection: Crawl Space & Basement Dehumidifier

To dehumidify a crawl space without a dehumidifier, you can improve ventilation by adding vents or fans, seal cracks and gaps, and use a vapor barrier to block moisture from the ground. However, for faster and more effective moisture control, installing a commercial dehumidifier is the best option, especially in regions with high humidity.

You have two options for installing a crawl space dehumidifier:

1. Professional Contractor: For a proper and safe installation, hire a licensed contractor. They will ensure the unit is set up correctly.
2. DIY Installation: If you are handy, you can install it yourself. Argendon dehumidifiers include clear instructions for easy setup. This way is also more cost-effective.

1. Prepare the Area
   Seal the crawl space with a vapor barrier and ensure all vents are closed to prevent moisture.
2. Place the Dehumidifier
   Set the dehumidifier on a level surface, using blocks if needed. Wait 2 hours after moving it before turning it on.
3. Set Up the Drain Line
   Attach the drain line to the dehumidifier's discharge end and tighten the compression nut.
4. Plug It In
   Plug the dehumidifier into a 15-amp grounded circuit.

Learn more about installing dehumidifier in crawl space.

The cost of a crawl space dehumidifier can range from $400 to $1,500, depending on the size, features, and brand. At Argendon, our crawl space dehumidifiers are priced between $400 and $800, offering excellent moisture removal at a competitive price.

Interested in the latest 2025 crawl space dehumidifier cost? Keep reading to learn more.

To determine the right size dehumidifier for your crawl space, consider both the square footage and humidity level. For a residential crawl space (around 1,000 sq ft), a 70-pint unit is usually sufficient. For larger or damper spaces, consider a 120-pint or larger model. Here is a complete dehumidifier sizing guide for your reference.

We don’t recommend using a regular dehumidifier in your crawl space. A commercial dehumidifier is a better choice for these reasons:

• Durability: Built for 24/7 operation in harsh conditions, making them more durable than household models.
• Efficiency: Higher moisture removal capacity (70+ pints/day) and more energy-efficient.
• Low-Temperature Operation: Works effectively in cold environments, unlike regular dehumidifiers, which can freeze or lose efficiency.

If you don’t know the difference between crawl space dehumidifier and regular dehumidifier, this guide has you covered.

Set your dehumidifier to 45–50% relative humidity. This range effectively prevents mold, protects your home’s structure, and avoids overworking the unit.

With a 5-year limited warranty and commercial-grade, corrosion-resistant parts, our dehumidifiers are built for long-term reliability in challenging crawl spaces.

We tested and picked the best crawl space dehumidifiers of 2025, so you won’t waste your money and can buy with confidence.