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Crawl Space Dehumidifier Installers by State

Searching for a crawl space dehumidifier installer near me usually turns up a mix of national franchises, HVAC companies and a few local specialists. This directory lists 25 contractors across 10 humid states, each one checked against its own website for location, service area and the services it actually offers. No listing is paid, and none includes ratings we could not verify.

What a crawl space dehumidifier installer does

A proper installation is more than plugging a unit in. The installer measures the crawl space and sizes the dehumidifier in pints per day for the volume and moisture load, then checks the vents, vapor barrier and any standing water, because a unit in a leaky, vented crawl space will run constantly and still lose. They plan the condensate drain, either by gravity to a floor drain or the exterior, or with a condensate pump when the unit sits below grade. Larger units are often ducted so dry air reaches the far corners. The unit is then hung from the joists or set on a level pad so the drain pan empties correctly, and a dedicated outlet is added if one is not within reach. Many installers finish by setting the humidistat and showing you how to read it.

What to ask for in a quote

  • The exact model and its rated capacity in pints per day, and at which test standard (AHAM 80°F/60% RH ratings are higher than DOE 65°F/60% RH ratings for the same unit).
  • The drain plan: gravity or pump, where the water goes, and who maintains it.
  • The warranty on the unit and on the installation labor, in writing.
  • Whether they recommend sealing or fully encapsulating the crawl space first, and what that adds to the price.
  • Whether ducting, a new outlet or vapor barrier repairs are included or extra.

For typical pricing on units, professional installation and running costs, see the crawl space dehumidifier cost guide. If you are weighing whether to do the work yourself, the installation guide walks through the DIY steps and when to call a pro.

Browse installers by state

Don't see your state? We only list installers we have verified, so coverage is limited to the states above for now. In the meantime, the installation guide explains what a correct install involves so you can vet any local contractor.

Frequently asked questions

How do I find a good crawl space dehumidifier installer?

Start with companies that specialize in crawl space work rather than general handymen. Ask for a moisture inspection before a quote, a written plan for how the unit will drain, the model and rated capacity they intend to install, and the warranty on both the unit and the labor. Get two or three quotes and compare what each one includes, not just the price.

Should I encapsulate the crawl space before installing a dehumidifier?

Usually yes. A dehumidifier in a vented crawl space fights a losing battle against humid outdoor air and ground moisture. Sealing the vents, laying a vapor barrier and fixing standing water first lets a correctly sized unit hold 50 to 55 percent relative humidity with far less run time. Most installers in this directory offer encapsulation and dehumidifier installation together.

Do installers supply the dehumidifier or can I buy my own?

Most contractors supply the unit, often a Santa Fe, AprilAire or a dealer-branded model, and price it into the job. Some will install a unit you purchased separately, but they may not warranty the equipment. Ask before you buy; if you want to shop first, our best crawl space dehumidifiers list at /best/ covers the models installers commonly use.

Are these listings paid or sponsored?

As of now, no company has paid to appear in this directory. Every listing was verified against the company's own website. Companies are listed alphabetically within each city, with any featured (paid) listings shown first and labeled with a Featured badge.