Sized to Your Space
We calculate cubic footage, air exchange and moisture load before we pick the unit — not a one-size-fits-all guess.
Professional crawlspace dehumidifiers installed to control humidity, prevent mold, and eliminate musty odors.
Properly sized crawlspace dehumidifiers that hold humidity below 55% all year — no musty smells, no mold growth, no guessing.
A vapor barrier and encapsulation seal out ground moisture, but your crawlspace can still pick up humidity from outside air, plumbing and normal daily use. A dehumidifier is what finishes the job.
In the Upstate, spring and summer humidity can push crawlspaces over 70% relative humidity — more than enough for mold, dust mites and wood rot to thrive. A properly sized unit holds that number under control, quietly, year-round.
Installed right, you hardly know it's there — but your home smells cleaner and the floor above stays dry.
A dehumidifier is only worth installing if it can actually handle the space it's in.
We calculate cubic footage, air exchange and moisture load before we pick the unit — not a one-size-fits-all guess.
Portable units don't belong under a house. We install sealed, crawlspace-rated dehumidifiers built for humid, dusty environments.
Integrated pumps or gravity drains so you're not emptying buckets or worrying about overflow.
Modern units run efficiently and quietly — you won't hear them upstairs.
Every install starts with a free inspection to confirm the right model and location.
We measure the space, test current humidity, and check airflow to recommend the right unit.
Clear a solid, level location with access to drainage and power — properly elevated off the ground.
Unit installed, condensate line run to a proper drain, and set to hold under 55% humidity.
We verify humidity drops and walk you through maintenance and filter changes.
A dehumidifier is often installed alongside encapsulation. See how it factors into pricing in our crawlspace encapsulation cost guide for Spartanburg, SC.
A crawlspace dehumidifier only protects your home if it keeps working. Our maintenance program checks the filter, drainage and humidity levels on a recurring schedule so small issues never turn into a failed unit.
Enroll in the JHS Crawlspace Maintenance Program — recurring semi-annual visits for just $139 each.
Honest work, clear communication, and results homeowners actually notice.
Book your free crawlspace inspection today — no pressure, no scare tactics.
Proven methods to control humidity and prevent water damage under your home.
How to tell if your home’s moisture is normal or a sign of crawlspace trouble.
Step-by-step guide to removing moisture and preventing it from coming back.
Browse every service in one place on our Crawl Space Services hub, or jump straight to a related service below.