Crawl Space ventilation - Fan vs Dehumidifier Pros & CONS

When it comes to controlling the humidity levels in your crawl space, you have a few different options. You can install a crawl space fan, a humidifier, or a dehumidifier. But which one is the best option for your needs?
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In this article, we'll compare each option so that you can make an informed decision.

Crawl Space Ventilation Fan

A crawl space ventilation fan is a great way to improve the airflow in your crawl space and reduce the humidity levels. By installing a fan, you'll be able to keep the living space air moving and prevent moisture from building up.

Crawl space fans are relatively inexpensive and easy to install. You can find them at most home improvement stores.

Here are some things to keep in mind if you're considering a crawl space fan:
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• Make sure the fan is properly sized for your space.
• Be sure to seal any cracks or gaps around the fan to prevent moisture from entering your crawl space.
• The fan will need to be powered by electricity, so make sure you have an outlet nearby.
• You'll need to clean the fan regularly to prevent it from becoming clogged with dust and debris.

Pro-Tip: If you live in an area with a lot of humidity, you may want to consider installing a humidity-controlled crawl space fan. These fans will turn on and off automatically to help keep the humidity levels in check.

Crawl Space Dehumidifier 

​A crawl space dehumidifier is another great option for reducing the humidity levels in your crawl space. Dehumidifiers work by removing moisture from the humid air. This can help to prevent mold and mildew from growing in your crawl space.

If we're just talking about the initial cost, a crawl space dehumidifier will be more expensive than a fan. However, a dehumidifier will use less energy and will be more effective at reducing the humidity levels.

Since a lot of moisture enters your home through the crawl space, a dehumidifier can also help to improve the indoor air quality in your home.
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When buying a crawl space dehumidifier, make sure that the dehumidifier has a drainage hose so that the water can be removed from your crawl space.

What Is Crawl Space Encapsulation?

Crawl Space Encapsulation is a process of sealing the crawl space in order to control moisture and humidity levels and improve the air quality. Sealing the crawl space prevents moisture from entering, which can help to prevent mold and mildew from growing.
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If you're considering a crawl space fan or dehumidifier, consider encapsulating your crawl space. This will provide the best results in terms of reducing humidity levels and improving crawl space air quality.

Is It Possible to Put A Dehumidifier In Crawl Space Without Encapsulation?

Yes, you can put a dehumidifier in your crawl space without encapsulation. However, we recommend encapsulating your crawl space for the best results.
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Sealing the crawl space will prevent moisture from entering, which can help to reduce the humidity levels and improve the moist air quality in your home.

Advantages of Crawl Space Encapsulation

Pests are attracted to dark, humid places. By sealing the crawl space, you can make the area less attractive to pests. This can help to keep your home pest-free.

Prevention of Mildew or Mold 

Who loves having to deal with mold or mildew? By sealing the crawl space, you can help to prevent these nasty organisms from growing.

Preserve the Home’s Structural Integrity 

Sealing the crawl space can help to prevent standing water damage, which can lead to expensive repairs.

Boost Energy Efficiency 

In a sealed crawl space, the ductwork and HVAC system is protected from the elements. This can help to improve the efficiency of your heating and cooling system and reduce your energy bills.

FAQs 

Should I run a fan in my crawl space?

As long as it is properly sized and installed, a crawl space fan can help to reduce the humidity levels in your crawl space.

Should I put a dehumidifier in my crawl space?

Some people choose to put a dehumidifier in their crawl space in order to reduce the humidity levels. We recommend encapsulating your crawl space for the best results or do at least a plastic vapor barrier on the ground if you choose not to encapsulate.

Conclusion 

So, yes, which is better for a crawl space, fan or dehumidifier? If you're just looking at the initial cost, a fan will be cheaper. However, a dehumidifier will use less energy and will be more effective at reducing the crawl space humidity levels.

Although regular dehumidifier models can be used in your crawl space, we recommend that you buy a dedicated crawl space dehumidifier. These models will have features that make them more effective at reducing relative humidity levels.

Ultimately, the best option for your crawl space will depend on your specific needs and budget. Call a crawl space encapsulation company to understand the implications in your case.

Author

David is the lead content editor at RVA Paving Pros, a service for Richmond VA residents. In his spare time, David likes to travel, read about business and visit the finest italian restaurants in town!