How to Choose a Radon Mitigation Company in Huntsville

How do you choose a good Radon Mitigation company in Huntsville?

Look for a licensed, insured crew that specializes in active soil depressurization, gives you a written quote after an on-site visit, and has experience with Huntsville's clay soils and crawlspaces. Avoid anyone who quotes a price over the phone without stepping foot on your property.

Madison County sits in the top tier of Alabama counties for radon potential, alongside Colbert, Franklin, Jackson, Lauderdale, Lawrence, Limestone, and Morgan counties. That means the odds your home needs mitigation are higher here than in south Alabama. The EPA and the U.S. Surgeon General recommend fixing any home that tests at or above 4.0 pCi/L. Indoor radon averages about 1.3 pCi/L nationally, and outdoor air runs about 0.4 pCi/L, so an indoor reading several times higher is the signal to act.

A standard active soil depressurization system runs about $800 to $1,500 installed nationally, with complex homes reaching $2,500 or more. In Huntsville, costs often land toward the upper end for two-story homes, steep roofs, or heavy debris. The only way to get an exact figure is a free on-site quote. Any company that gives you a firm number over the phone without seeing your foundation, crawlspace, or slab is guessing, and you will likely pay for that guess later.

We have seen homeowners in Jones Valley and Hampton Cove call us after a neighbor's system went in for $1,200 and theirs came back at $1,800 because the crew had to run the vent pipe through an unconditioned attic instead of a garage. Soil type, foundation type, and the location of the sump pit all change the job. That is why we do not quote blind.

What to look for (licensing, insurance, experience)

A good radon mitigation company in Huntsville holds a valid Alabama radon mitigation license, carries general liability and workers' compensation insurance, and has at least three to five years of experience installing active soil depressurization systems in north Alabama homes.

Alabama does not require a state license for radon mitigation, but the Alabama Department of Public Health runs a voluntary certification program. We carry that certification because we passed a test and agreed to follow EPA standards. That is a solid baseline. Beyond that, ask if we are listed with the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB). These national bodies require continuing education and field experience.

Insurance matters more here than in most trades. A radon system involves drilling a hole through your basement floor or crawlspace slab, running PVC pipe through your attic or exterior wall, and installing a fan that runs 24/7. If a crew member drops a drill through a water line or falls off a ladder, you do not want that bill landing on your homeowners policy. Ask for a certificate of insurance before they start. We carry both general liability and workers' comp, and we hand that certificate over without being asked.

Experience in Huntsville specifically matters because of the soil. We have heavy red clay that can shift and crack slabs over time, and a lot of homes built in the 1980s and 1990s have crawlspaces that were never sealed. A crew that has worked in Huntsville for years knows where to expect standing water in a crawlspace after a hard rain, and they will route the vent pipe away from that area. A crew from out of town might miss it and have to come back.

Questions to ask before you hire

Ask about their process for routing the vent pipe, whether they seal the crawlspace or just install the system, what warranty they offer on parts and labor, and how they handle post-installation testing. Also ask for three recent references from homes similar to yours in Huntsville.

When you call, ask: 'Do you come to the house first, or do you quote over the phone?' Quoting over the phone means cutting corners before the job starts. We cannot know if your slab is poured on a gravel bed or if your crawlspace has a vapor barrier. We cannot see if the sump pit is sealed or open. That matters because an open sump pit can pull radon into the house even with a system running.

Ask how they conceal the vent pipe. A standard system runs a 3-inch or 4-inch PVC pipe from the suction point in the slab or crawlspace up to the roofline, with a fan mounted in the attic or on the exterior. Some crews run it up the side of the house in plain sight. Others tuck it inside a closet or run it through the garage. We route it through the garage when possible, because that keeps the pipe out of the weather and out of sight. If it has to go outside, we paint it to match the siding.

Ask about the warranty. Most fans carry a five-year manufacturer warranty, and we warranty our labor for at least one year. Some outfits offer a lifetime warranty on the system, but read the fine print: it often covers only the pipe and not the fan or labor. We give a one-year labor warranty and we handle fan replacements under the manufacturer warranty at no labor charge during that first year.

Ask for references from homes in your part of town. A system in a 1960s ranch in Five Points is different from a new build in Providence. Call those references and ask if the crew showed up on time, if the job site was clean at the end of each day, and if their radon levels dropped below 2.0 pCi/L after installation.

• Do you quote over the phone or come to the house?
• How do you route the vent pipe, and can you hide it?
• What warranty do you offer on the fan and on labor?
• Can you share three recent references from Huntsville homes?
• Do you seal the crawlspace or just install the system?

Red flags to walk away from

Walk away if the company quotes a firm price over the phone, offers to do the job without a written contract, has no insurance certificate to show you, or says they can fix the problem by just sealing cracks without installing a vent system.

The biggest red flag is when we say, 'We can do it for $1,000, no need to come out.' We cannot know your house without seeing it. A home on a slab in Blossomwood might need one suction point. A home on a crawlspace in the Medical District might need two, plus a vapor barrier and a sump pit seal. The price difference is substantial, and a phone quote guarantees you will either pay too much or get a system that does not work.

Another red flag is a crew that offers to 'just seal the cracks.' Sealing cracks alone does not stop radon. Radon comes from the soil below the slab, and it finds every gap: cracks, joints, the gap around plumbing penetrations, the sump pit. Sealing those gaps helps, but without an active soil depressurization system pulling the gas out from below, the radon will still seep in. A crew that pushes sealing alone either does not understand radon or wants to do a cheap job and move on.

Watch for a contractor who cannot produce an insurance certificate. If they say 'we are covered under our homeowner's policy,' that is not business insurance. If a worker gets hurt on your property and we have no workers' comp, you could be liable for medical bills. We have seen it happen to a homeowner in Owens Cross Roads. The crew was uninsured, the worker broke his ankle, and the homeowner's insurance had to pay the claim. That is a mess you do not want.

Finally, be wary if we pressure you to sign the same day. Our crews will give you a written quote, let you think about it, and answer your questions. If we say 'this price is good only if you sign today,' we are using pressure to hide something. Walk away.

Common questions about hiring for Radon Mitigation

Here are answers to the questions we hear most often from Huntsville homeowners.

Frequently Asked Questions