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Top-Rated Radon gas abatement pros in Tarrytown - Updated Nov 2026

Avatar for Lance Dorfi, LLC
Lance Dorfi, LLC
4.7(
64
)
Radon Gas - Abatement

Serving Tarrytown, NY and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Lance Dorfi was incredibly professional and efficient. They responded to my emails quickly and the installation of the radon mitigation system was done within 3 hours and has reduced our radon level significantly. I would absolutely recommend them!"
Job Site
Response time2 days
18 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Expediant Environmental Solutions, LLC
Expediant Environmental Solutions, LLC
3.9(
438
)
Radon Gas - Abatement

Serving Tarrytown, NY and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"As a realtor, I found Rich from Expedient Environmental Solutions while searching for a client who needed mold remediation. He and his crew did an excellent job at a fair price. They finished on time and left the home clean. So, when I was looking personally to have basement waterproofing (interior french drains and sump pump) along with radon mitigation, I received 3 quotes, of which theirs was the most comprehensive plan, and again not the highest quote overall. They finished the work ahead of schedule by bringing four workers the second day, were respectful throughout and left the area reasonably clean. I'm confident that my days (and nights!) with the shopvac and flooded basement are finally over, and grateful they stand behind their work for a full year. Good contractors are hard to find. Glad I found them. Thanks and I highly recommend!"
Response time2 days
Response rate100%
22 neighbors recently requested a quote
Radon Zapper
4.8(
21
)
Radon Gas - Abatement

Serving Tarrytown, NY and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Chris was a clear, effective communicator, very professional, clear and transparent in his billing, and did a clean and effective job. Chris showed up on time, got the job done in the time he said, and made us comfortable and confident in his work. We had a really messed up (and ugly) radon system in our home; what we have now is aesthetically a huge improvement and mitigates radon significantly better. Highly recommended."
Radon Mitigation
Radon Mitigation 1
Radon Mitigation 2
Radon Mitigation 3
Radon Mitigation 4

+33

Recommended by100%of homeowners
Avatar for POLO & ASSOCIATES HOME INSPECTIONS LLC
POLO & ASSOCIATES HOME INSPECTIONS LLC
4.1(
32
)
Radon Gas - Abatement

Serving Tarrytown, NY and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"First he was late, approximately 15 minutes late, which was disappointing since I understand now that many inspectors arrive a little early so that they can finish looking at the perimeter of the house. He had my realtor, my husband and me waiting after we rushed from work. He was also late when picking up the radon test when my realtor was waiting for him.
Overall, Mr. Polo knows his stuff. He spoke very knowledgeably about things. He also went under the deck to do a good oil tank sweep even though he said he usually doesn't do that. So I give him credit for thoroughness in that regard. In the end, if you just want a guy who will walk through the house, point out stuff you need to pay attention to while you take notes, then he's your guy. But if you are a first-time homebuyer and need someone who will do more hand-holding, show you how to turn off the water main, and stuff like that for example, or give you a really detailed report with pictures and arrows, then Mr. Polo is not the one for you. I learned this the hard way, but due to time constraints I couldn't get the inspector I originally wanted. Mr. Polo though accommodated my schedule, but in the end his services fell short.  His report is almost incomprehensible. There are unfinished sentences and no pictures, but he does get it to you quickly.  So if time is a factor that's another reason to hire him. But like I said, if you're a new homebuyer and need the report as a reference for future fixes and are not good at jotting notes during the inspection, then I would recommend going elsewhere if possible.
"
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+9

Recommended by64%of homeowners
Avatar for MAGNA DRY CARPET CLEANING & RESTORATION
MAGNA DRY CARPET CLEANING & RESTORATION
4.8(
24
)
Radon Gas - Abatement

Serving Tarrytown, NY and surrounding areas

In business since 1991

Emergency services offered

Credit card accepted

"The cleaners arrived half an hour late and then it took them slightly over an hour to perform all services. I had a feeling they would come early or late because they tried to reschedule in the morning but I wasn't able to reschedule. They were very polite about trying to reschedule. They probably were over booked.
Both workers were organized and really applied muscle to the work. It was hard work but they were cheerful throughout.
The job was a little pricier than I first expected but not because of the carpet cleaning. I elected to add more square footage and I also choose the $85 additional stain guard option. I figured if the chemical made the rooms so clean, it might be worth it to keep them that way. We'll see.
"
Recommended by95%of homeowners
Avatar for Anthi Environmental Corp.
Anthi Environmental Corp.
5.0(
9
)
Radon Gas - Abatement

Serving Tarrytown, NY and surrounding areas

Emergency services offered

"I was extremely happy with the thorough and efficient work done by Pete from Anthi Environmental Corp. My schedule can be hectic at times and Pete was flexible with the times I had available. He was courteous and knowledgeable and I was very satisfied with the entire experience."
Lead removal under HPD violations
Mold testing and remediation
Mold remediation
Lead removal under HPD violations
Mold testing and remediation

+59

Response time2 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for All States Air Duct Pro
All States Air Duct Pro
3.1(
236
)
Radon Gas - Abatement

Serving Tarrytown, NY and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"All States Air Duct Pro was okay. I wasn't rocket science. It was alright, it ain't like painting a Picasso or nothing like that.My wife had an interaction with them. I will probably not use them again."
Before & After Air Duct Cleaning
Recommended by49%of homeowners
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FAQs for radon gas abatement projects in Tarrytown, NY

The only way to know whether your home or water supply contains radon is to schedule a professional test. A qualified radon inspector will collect samples, deliver lab-verified results, and explain the findings for $150 to $800. Once you know your exact levels, you and your radon mitigation pro can choose the right system and tackle the problem before it affects your family’s health.

Both roles tackle radon, but they focus on different steps. Inspectors test your home, interpret the results, and determine whether levels exceed EPA guidelines. Mitigation pros design and install the system that lowers those levels. Some companies do both, but the skills and equipment differ, so always verify that the person you hire is properly certified for the specific service you need.

Installing a mitigation unit fixes radon problems by reducing indoor gas levels to established safe standards. A system designed and installed by a mitigation expert, tailored to your home's specific layout and foundation, guarantees effective radon reduction. This expert installation ensures consistent performance over time while safeguarding your indoor air quality.

Open windows and doors do not reduce radon levels because they trigger a pressure imbalance that draws radon-laden air into your home. This practice fails to control radon concentration and can even worsen the issue. An active suction mitigation system provides a proven, safe, and effective solution to reliably reduce radon levels.

Radon mitigation systems generally last between 10 and 30 years, depending on system type and maintenance. Passive systems endure the longest because they have no moving parts, whereas active systems, which use a fan, require fan replacement every 5 to 10 years. System components, such as PVC pipes, seals, and fittings, can remain effective for decades when paired with periodic inspections and proper maintenance.

Radon mitigation systems consume between 300 and 3,000 kWh of electricity per year, depending on fan size and system design. On average, an active radon fan draws 100 to 300 watts continuously, which translates to roughly 876 kWh annually, and adds $30 to $300 to your energy bill each year. Choosing a high-efficiency fan and ensuring tight sealing around pipes helps minimize these ongoing costs.

The Tarrytown, NY homeowners’ guide to radon gas abatements

From average costs to expert advice, get all the answers you need to get your job done.