what kind of dehumidifier do I need for a crawl space

Crawl spaces often become damp and uncomfortable, creating an inhospitable environment in your home. Recently, I encountered the same problem when I moved into a house with a crawl space. After doing some research, I discovered that a dehumidifier is the perfect solution to this issue. In this article, I will explain what kind of dehumidifier you need for your crawl space and provide tips on how to choose the right one for your needs. With the right dehumidifier, you can make your crawl space comfortable and livable once again!

Key Takeaways

  • Choose a dehumidifier that can remove enough moisture per day while being energy efficient.
  • The size of the unit depends on the amount of water that needs to be removed.
  • Encapsulating a crawl space is the best way to create a dry, healthy environment.
  • Consider the size of your home, climate, and other factors when selecting a dehumidifier.

What Is a Crawl Space Dehumidifier?

A crawl space dehumidifier is a must-have if you want to keep your home dry and mold-free. It is used to reduce the humidity levels in a crawl space, which can otherwise lead to damages from moisture buildup or cause musty odors in your home due to the dampness. A crawl space dehumidifier works by controlling how much moisture it removes from the air and then exhausts it out of the area. Depending on the size of your crawl space, it’s important to choose a dehumidifier that can cover an adequate amount of square feet and has good performance.

dry crawl space with efficient dehumidifier

When choosing the right dehumidifier for your crawl space, make sure that its features are capable of removing enough pints of moisture per day while still being energy efficient. You may also want one with additional features such as adjustable thermostats or built-in humidistats that help you maintain specific humidity levels and effectively control moisture buildups in walls and other areas.

A quality crawl space dehumidifier is essential for keeping your home comfortable, safe from mold growth, and free of musty odors due to humidity issues. Make sure you research carefully when selecting one so that you get a model that meets all your needs while providing maximum efficiency at an affordable cost.

Sizing and Classification

Choosing the right size and type of dehumidifier for your crawlspace can be a real headache, so take your time and don’t cut corners to make sure you get it right — otherwise you’ll be kicking yourself in the future! When it comes to selecting a dehumidifier, there are several factors that must be taken into consideration:

  • Classification: Dehumidifiers come in two types: portable and whole-house. Portable units are typically used in smaller spaces like crawlspaces or basements while whole-house systems are designed for larger areas.
  • Size: The size of the unit will depend on the amount of water per day that needs to be removed from the space. Generally speaking, a 30 pint model should suffice for most crawlspaces.
  • Installation: You may need to hire a professional to install your dehumidifier depending on its size and complexity.

In addition, it’s important to remember that maintaining optimal humidity levels in your crawlspace is key to preventing mold growth due to excess moisture. A good quality dehumidifier will help keep your environment safe from health risks associated with mold and mildew by controlling humidity levels within acceptable ranges.

Dehumidifier Benefits

Beyond the obvious moisture-control benefits, investing in a quality dehumidifier can help you protect your family’s health and improve the air quality of your home. Dehumidifiers are designed to reduce the level of humidity in your home by removing excess water from the air. By reducing the amount of water in the air, you can prevent condensation on walls and windows, which can create an ideal environment for mold growth. In addition, a dehumidifier also helps limit dust mite activity and odor caused by bacteria buildup. When choosing a dehumidifier for a crawl space, it is important to consider its size; larger units are better at removing more moisture per day than smaller models. A larger dehumidifier will be able to remove more pints of water each day from your crawl space and will ensure that your humidity levels stay at an appropriate level between 30 percent and 50 percent. It is also important to keep airflow unrestricted so that any moisture is quickly removed from your crawl space before it has time to build up or reach other parts of your home through cracks or gaps in walls or floors. Finally, installing a barrier between ground soil and flooring materials such as plywood or concrete will help reduce humidity even further by preventing moisture from rising up into the crawl space. Investing in a quality dehumidifier for your crawl space is essential for controlling humidity levels and eliminating issues related to excess moisture such as mold growth, dust mites, odors caused by bacteria buildup, and poor indoor air quality.

Signs of Need

If you notice signs of mold growth, musty odors, or an uncomfortable level of humidity in your home, it’s likely time to invest in a dehumidifier. Regular dehumidifiers are designed for rooms and can help lower the humidity levels by collecting extra moisture from the air and draining it into a water collection tank. However, if you have more serious humidity issues such as those found in crawl spaces or basements, then a special type of unit is needed to properly address them.

Temperature LevelsHumidity Level

Crawl space units are designed with features that allow them to operate efficiently while dealing with foundation walls and other unique aspects of these areas. They come equipped with drain spouts so they can be connected directly to a floor drain or sump pump for continuous dehumidification. It is also important to note that different temperature levels require different humidity levels for optimal results – as shown above in the table.

To ensure proper function and performance from your dehumidifier, it is highly recommended that all maintenance requirements be followed closely according to manufacturer’s instructions. If done correctly, this will keep your unit running at peak efficiency while providing the best possible results for keeping your basement or crawl space dry and free from excess moisture.

Important Factors

When it comes to crawl spaces, you want a dehumidifier that is able to adjust itself according to current humidity levels and effectively remove moisture from your space. For example, a pint dehumidifier is ideal for small areas such as closets or bathrooms. If you have an unfinished basement or larger area such as a garage, then consider investing in a basement dehumidifier which can remove up to 70 pints of water every 24 hours. Additionally, portable dehumidifiers are great if you’re looking for something that can be moved around to different rooms and has features like full water tanks alerts and control panels with special settings.

When selecting the right dehumidifier for your crawl space, consider how much square footage you need covered and how many gallons of water per day do you need removed? If possible, invest in one with built-in sump pump which will protect against potential water damage from flooding or overflowing by automatically pumping out the collected condensate into a nearby drain or sump pit. Also keep an eye out for any additional features such as humidistat that allows you to set desired humidity level and timer so the unit shuts off after reaching its target humidity point.

No matter what type of dehumidifier your decide on, make sure it’s suited for your specific crawl space requirements in terms of size and power output — this will ensure optimal performance while helping reduce energy costs over time as well as preventing unnecessary wear and tear on the unit itself.

Buying Considerations

Now that we’ve explored some of the top picks for dehumidifiers suitable for use in a crawl space, let’s look at some important considerations when buying one. First and foremost, size is an important factor to take into account. You’ll want a dehumidifier that can handle the volume of air in the crawl space, but you don’t want it to be too large and take up too much room either.

compact dehumidifier keeps your crawl space dry

The second consideration is whether you should go with a refrigerant or desiccant dehumidifier. Refrigerant dehumidifiers are more efficient at removing moisture from the air but tend to be louder and heavier than desiccant models. Desiccants also require higher temperatures to operate effectively, so they might not be ideal if your crawl space has cool temperatures due to its location underground.

Finally, make sure you check out any warranties offered by the manufacturer as well as options for continuous drainage and vapor barriers if needed. Additionally, living in humid climates may require larger-sized units than in drier areas; this will help ensure that your system runs efficiently and keeps musty smells away! When it comes time to buy a dehumidifier for your crawl space, consider all these factors carefully so you can get one that meets your needs while keeping energy costs low and nearest drain clear of excessive moisture.

Encapsulated Crawl Spaces

Encapsulating a crawl space is the best way to create a dry, healthy environment that won’t require frequent dehumidifier maintenance. Crawl space encapsulation involves sealing the walls and floor of the area with plastic sheeting and preventing moisture from entering your home. It also helps to optimize air flow, enabling you to find the right dehumidifier option for your climate and needs. When selecting a dehumidifier for an encapsulated crawl space, look for one that has enough liters of water daily performance to ensure it can keep up with humidity levels in your home without needing frequent emptying or maintenance.

When selecting a dehumidifier, make sure it has an exhaust pipe or duct connected so you can easily drain out collected moisture via gravity or a sump pump. Additionally, if needed you can install flex ducts in order to direct humid air away from areas where condensation occurs and into the crawl space itself. To further protect against condensation, it’s possible to construct cinder blocks along the edges of the plastic sheeting in order to raise its temperature slightly above ambient temperatures in order to reduce humidity levels inside the crawlspace even more thoroughly.

Crawl space encapsulation is an important step towards creating a healthy indoor environment while reducing energy costs associated with running a dehumidifier constantly throughout summer months. By following these guidelines when purchasing and installing a dehumidifier alongside effective drainage setup and cinder block barriers on edges of plastic sheeting, homeowners are able achieve long-term success controlling humidity levels within their homes without needing frequent repairs or replacements of their equipment.

Frequently Asked Questions

Are there any safety precautions I need to be aware of when using a crawl space dehumidifier?

When considering the use of a crawl space dehumidifier, it is important to take into account some safety precautions. To illustrate this point, imagine an archer preparing for battle – just as they check their arrows and bowstrings before launching forth, so too must we be vigilant in ensuring that our dehumidifiers are functioning correctly. This means checking the filters and tubes periodically to make sure they are clean and free from obstructions, as well as making sure that you consult your user’s manual for any additional tips or instructions on how to safely operate your device. Ultimately, by taking these extra steps you can ensure that your crawl space remains safe and dry.

Is there a difference between a whole-home dehumidifier and a crawl space dehumidifier?

Yes, there is a difference between a whole-home dehumidifier and a crawl space dehumidifier. Whole-home dehumidifiers are typically larger, more expensive models that may be installed in an attic or basement to help keep humidity levels down throughout the entire home. Crawl space dehumidifiers are specifically designed for use in confined spaces such as crawl spaces and basements, and they tend to be smaller and less expensive than whole-home models.

Is there a noise level associated with crawl space dehumidifiers?

Yes, there is a noise level associated with crawl space dehumidifiers. Depending on the model and size of dehumidifier chosen, the noise levels can vary greatly. Generally, most models provide an acceptable level of noise for residential applications, but it is still important to check the manufacturer’s specifications before purchase. In addition, some models may allow users to adjust the fan speed which could affect or reduce sound output.


In conclusion, a dehumidifier for your crawl space is essential to keep it healthy and dry. There are so many options available to choose from that it can be overwhelming. Choosing the right one for you will depend on factors such as size and classification. Investing in a quality dehumidifier is like having an insurance policy against water damage – it’s invaluable! With the right dehumidifier, you’ll never have to worry about humidity levels again – it’ll be like a miracle worker!

Leave a Reply

Your email address will not be published. Required fields are marked *