Collect it. Pump it out.
Drainage carries water to a sump basin. A sump pump moves the collected water outside.
Sump pumps
Crawl Space Dehumidifiers
Control the moisture you can’t see. We install HumidiGuard dehumidifiers as part of a plan to reduce humidity, condensation, and musty conditions beneath your home.
An inspection connects humidity readings with the conditions causing them.
Drier air starts with the whole crawl space.
A crawl space dehumidifier draws moisture from the air and sends the collected water to a drain. It helps manage damp conditions that contribute to condensation, musty odors, and moisture damage.
Crawl Space Brothers installs, repairs, and maintains crawl space dehumidifiers. We inspect the space, identify where moisture is coming from, and recommend a HumidiGuard system suited to your home.
Different moisture problems. Connected solutions.
Water on the ground, moisture in the soil, and humidity in the air need different approaches. Your inspection shows which parts your home needs.
Cover the ground.
A sealed vapor barrier helps limit moisture evaporating from exposed soil into the crawl space.
Vapor barriersDry the air.
A dehumidifier removes moisture from the air after water entry and ground moisture are addressed.
DehumidifiersNo resources match. Try another search or choose All resources.
Signs You Need a Crawl Space Dehumidifier
A musty smell or damp surface is a reason to investigate. We check the air, building materials, and moisture sources before choosing equipment.
- Persistent humidity
- Condensation or musty odors
- Damp framing and insulation
Musty odors that keep returning
A persistent musty smell can be associated with damp materials or microbial growth. Reducing humidity can help manage the conditions behind the odor; existing mold or damaged material may need separate treatment.
Condensation on ducts or surfaces
Moisture can collect when humid air meets a cool surface. We look at humidity, insulation, and air movement to understand why condensation is forming.
Damp wood or insulation
Moisture in framing and insulation can point to an ongoing problem. We check for leaks and water entry as well as humidity; a dehumidifier does not repair damaged wood or stop a plumbing leak.
An existing unit that no longer keeps up
A unit that runs constantly, stops draining, or leaves the space damp may need service. Sizing, placement, drainage, and the condition of the crawl space all affect performance.
HumidiGuard, selected for your home.
The right equipment matters. So do its location, drainage, and the moisture-control system around it.
Size the system to the space
We recommend HumidiGuard equipment around the crawl space’s size, layout, and moisture conditions.
What we consider
The inspection looks beyond floor area. Air leaks, exposed soil, the condition of the liner, and ongoing water entry can increase the moisture the equipment must manage. We explain the recommended model in your written plan.
Plan airflow and drainage
We select a location with room for air circulation, a reliable condensate route, and access for service.
Why placement matters
A dehumidifier needs room to move air through the space. Collected moisture must drain away correctly, and filters and service panels should remain accessible. The installation approach depends on your crawl space.
Set up ongoing humidity control
We check operation and explain the controls, drainage, and maintenance your system needs.
After installation
A dehumidifier supports ongoing humidity control; it is not a one-time drying treatment. We explain how to monitor conditions and when to arrange service, including if odors, condensation, or water return.
What a dehumidifier can do for your home
The benefit comes from controlling moisture consistently. Installation and routine maintenance work together.
Explore TotalCare™ MaintenanceReduce humidity and condensation
Removing water vapor helps maintain drier conditions beneath the home and reduces the moisture available to condense on cool surfaces.
Support moisture and mold control
Humidity control helps make conditions less favorable for mold. It does not remove existing mold, replace remediation, or guarantee that growth can never return.
Keep the system working well
Filters, airflow, and condensate drainage need periodic attention. We offer repair and maintenance and can explain TotalCare™ Maintenance options for your installed system.
Why Choose Crawl Space Brothers
Crawl Space Brothers starts with a free inspection, custom-engineered recommendations, and written promises behind the work. Trusted by homeowners since 2019.
A free inspection. A plan built for your home.
Custom-engineered recommendations, a clear written estimate, and room to ask every question.
★★★★★Google review
“We’ve been using Crawl Space Brothers since 2022 to encapsulate our crawl space. Devin D. has been our tech the last two times and we are so happy with his service and attention to detail. Devin is a problem solver, has great disposition, patience and sense of urgency. He’s worked late on Fridays to make sure our…”
Diego A.Verified Google review · Charlotte, NC · Oct 2026
Lifetime transferable warranty.
Protection that stays with your home, even when you sell.
Your money is never at risk.
We stand behind our work with a written money-back guarantee.
Five-star service guarantee.
Clear communication. Respect for your home. A service promise we put in writing.
Our Crawl Space Dehumidifier Process
A free inspection. A written repair plan. The recommended work explained before you decide.
Free Crawl Space Inspection
We inspect your crawl space, measure moisture conditions, and identify possible sources of water and humidity.
Custom Recommendations
You'll receive a clear explanation of our findings and a written repair plan tailored to your home's needs.
Professional Installation
Our team installs the recommended HumidiGuard system and connects it with the agreed moisture-control work.
Final Walkthrough & Warranty
Before the job is complete, we review the finished work with you and explain applicable warranty coverage.
What Does a Crawl Space Dehumidifier Cost?
Equipment size, access, condensate drainage, and any related moisture-control work all affect the installed cost. Your free inspection leads to a written estimate that explains the equipment and work recommended for your home.
- No gimmicks or pushy tactics.
- Clear recommendations and an itemized scope.
- Time to ask questions before work begins.
Fair & honest pricing.
No sales tactics. No pressure to decide on the spot. Your written estimate explains the work and the price before you make a commitment.
Your money is never at risk.Our written money-back guarantee stands behind the work.
What homeowners are saying.
4.9 ★ average across 1,300+ Google reviews · BBB A+ accredited.
★★★★★ Google
They came in as scheduled and did a tremendous amount of work cleaning up my crawl Space. It looked absolutely fabulous when they were finished. They installed a dehumidifier which should...Read full review
They came in as scheduled and did a tremendous amount of work cleaning up my crawl Space. It looked absolutely fabulous when they were finished. They installed a dehumidifier which should help maintain the space. I am very pleased.
JS
★★★★★ Google
We just had our crawl space encapsulation completed by Crawl Space Brothers, and we couldn’t be more pleased with the experience and the results. Originally, we thought we just wanted to...Read full review
We just had our crawl space encapsulation completed by Crawl Space Brothers, and we couldn’t be more pleased with the experience and the results. Originally, we thought we just wanted to repair the door and replace the vapor barrier. After meeting with Mike and reviewing the details, it made sense to do the complete encapsulation. We really appreciated the detailed report, photos, and clear explanation of the recommended work. We also liked having options and never feeling pressured. At the end of the day, it was our home and our decision, and that was respected. From start to finish, the entire process was clearly communicated, and everyone we worked with was incredibly professional. Houston, owner of CSB Electrical, was recommended to install the outlet for the dehumidifier, and we would absolutely use him again. Steven and his crew completed the crawl space work, and we were very pleased with their work. The new door is secure, the encapsulation looks great, and we can already tell a difference in the house. These guys work hard, take pride in their work, and made the whole experience easy. We’re already wishing we had done this sooner! Thank you again to the entire Crawl Space Brothers team!
JA
★★★★★ Google
I asked Crawl Space Brothers to inspect the crawl space of my house. The inspector, Michael Johnston, was very professional. First of all he handed me a paper listing all of the...Read full review
I asked Crawl Space Brothers to inspect the crawl space of my house. The inspector, Michael Johnston, was very professional. First of all he handed me a paper listing all of the improvements that are legally required when a crawl space was encapsulated and a dehumidifier installed. He had another paper that listed the benefits. With other inspectors, I had to ask a lot of questions to gain a better understanding of requirements and benefits. While we talked, he drew up a plan of the house on his computer, with the current locations of the crawl space entry and vents, and the future location of the dehumidifier, sump pump, and hoses. Basically he was preparing the permit request to submit to the city government. I presented him with two previous inspections and proposals, and on his computer he drew up a three column table comparing all three, with pros and cons. And he answered all my questions satisfactorily. It was quite impressive and professional.
RB
★★★★★ Google
I had called Crawl Space Brothers in Nashville, TN to come analyze a long overdue issue in my crawl space. Have lived in my home over 20 years..and the "original " part was from the...Read full review
I had called Crawl Space Brothers in Nashville, TN to come analyze a long overdue issue in my crawl space. Have lived in my home over 20 years..and the "original " part was from the 1950's..animals, shoddy plumbing, and lots of moisture/water had left my crawl space in a horrible condition! ( as a person can imagine!). Mike Goodman was the analyst that came out. He spent a full hour thoroughly examining every square inch, documenting his findings, took accurate readings of both moisture and humidity levels at the current time. Upon reaching back on ground..he went over a vast portfolio of pictures. My jaw dropped at what I saw. Mike Goodman went over how Crawl Space Brothers can tackle every problem with ease and professionalism at every part of the process. My crawl space requires a sump pump & dehumidifier..plus all the good as gold encapsulation. Prior to this job being started..I have called Mike to ask further questions..he is very easy to reach..a big plus! He also came to repair an existing plumbing issue....before their job is started. That was above and beyond...very appreciative for his speedy help in that matter. This company is Top Notch. Excellent Professionalism. And for a company to ease my mind..they have done just that!! Really excited for my new clean legit crawlspace...and it's all updated to today's modern standards. Big Thanks To Mike Goodman with Crawl Space Brothers 🙌. It's definitely is worth your time to take a look at your crawlspace! Best regards, Claire (West Meade) Nashville, TN
TC
★★★★★ Google
Great company to work with. Very polite and respectful service technicians and office personnel. Steve & CJ did a great Install of our new crawlspce dehumidifier unit.
Great company to work with. Very polite and respectful service technicians and office personnel. Steve & CJ did a great Install of our new crawlspce dehumidifier unit.
SS
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Crawl Space Dehumidifiers FAQs
What is the best way to dehumidify a crawl space?
Start by understanding the moisture sources. Water leaks and standing water need their own solutions. A sealed ground barrier and properly selected dehumidifier can then work together to manage moisture in the space.
Which crawl space dehumidifier do you install?
Crawl Space Brothers installs HumidiGuard dehumidifiers. We recommend the equipment based on the size, layout, and moisture conditions of your crawl space, and explain the selection in your written estimate.
Will a dehumidifier remove standing water?
No. A dehumidifier removes moisture from the air. Drainage, a sump pump, or another repair may be needed to address standing water or its source before humidity can be managed effectively.
Does a dehumidifier replace mold removal?
No. It helps control humidity, but existing mold and affected materials may need separate assessment and treatment. We explain the work recommended for both the existing condition and the moisture source.
Do you repair and maintain crawl space dehumidifiers?
Yes. We offer dehumidifier installation, repair, and maintenance. If the space is damp again or the unit is not draining or operating normally, arrange a service assessment.