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Best radon detection and reduction specialists near Nashua, NH

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Top-Rated Radon detection and reduction specialists in Nashua - Updated Nov 2026

Avatar for Airtight Radon Solutions LLC
Airtight Radon Solutions LLC
5.0(
30
)
Radon Gas - AbatementRadon Gas - Testing

Serving Nashua, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Offers commercial services

"Marcel performed a flawless installation of a Radon Mitigation system in my home. He thoroughly explained and shared testing results as he proceeded with the installation. He continually checked and rechecked his measurements and cuts making sure everything was level and plumb. I'm a very meticulous customer and I was completely satisfied with my new system. He left an instrument to monitor my radon levels for a few days just to be absolutely sure that everything is performing as it should be. If you need Radon Mitigation...I HIGHLY recommend Airtight Radon Solutions."
My Projects
Radon Mitigation Ranch
Response time6 hrs
Response rate98%
29 neighbors recently requested a quote
Avatar for Indoor Environmental
Indoor Environmental
5.0(
56
)
Radon Gas - Testing

Serving Nashua, NH and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Jon was very quick to respond to my messages and was able to fit me in to his busy schedule to come take a peek and evaluate the issues. Turns out there is no immediate problem and that no remediation was necessary. He recommended some good solutions for humidity for me to research further. Jon was very friendly and you could tell that he's a straight shooter. I would definitely look to hire him should I need his services in the future."
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for US Water Consultants, Inc.
US Water Consultants, Inc.
4.6(
98
)
Radon Gas - Abatement

Serving Nashua, NH and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Very Good at getting right back to you and setting up appointment and providing a quote regarding the cost. The cost of the repair was a little more than what I was expecting but I do not have any idea what the cost for radon protection would be. Their professionalism and service is very good. If the system lasts as they stated then it is well worth the investment."
Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for True North Home Inspections, LLC
True North Home Inspections, LLC
4.9(
27
)
Radon Gas - Testing

Serving Nashua, NH and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"John was great, came to inspect our home in Rochester and was professional and had every piece of equipment you could need to give us a detailed look into our house. Even when the seller made a mistake on the sewer and water system types John helped us test both and went above and beyond. Cannot recommend enough if you want a the best and safest bet for an inspection!"
Response time3 hrs
Response rate89%
1 neighbors recently requested a quote
Avatar for 2K Radon & Basement Services
2K Radon & Basement Services
5.0(
7
)
Radon Gas - Abatement

Serving Nashua, NH and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

With over 15 years of experience in the basement and more than 50 hours of continuing education in radon air mitigation, 2K Radon & Basement Services is prepared to help care for your home.

Radon Mitigation
Radon Mitigation
Radon Mitigation System
Radon Mitigation System
Crawlspace Encapsulation

+21

1 neighbors recently requested a quote
Avatar for Erickson Foundation Solutions
Erickson Foundation Solutions
4.1(
75
)
Radon Gas - AbatementRadon Gas - Testing

Serving Nashua, NH and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"The consultation appointment was setup quickly, the salesperson was genuinely nice and took time to answer all my questions. The company itself is well organized, everyone was on the same page for the whole process. The installation for our radon mitigation system went smoothly. The crew was pleasant and did a great job."
Sinking Step Repair
Settling Home Addition
Settling Slab
EZ Posts for deck addition
Foundation Crack Repair

+60

Response time1 day
7 neighbors recently requested a quote
Recommended by86%of homeowners
Radon Systems LLC
5.0(
234
)
Radon Gas - AbatementRadon Gas - Testing

Serving Nashua, NH and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"Radon Systems LLC did a great job. I had a radon level of around 6.5 in my basement for years, and finally decided I needed to address it. After receiving 3 quotes, I had Dave from Radon Systems come over to do the job. I initially was resigned to having the PVC pipe go up the side of my house, but Dave found a way to run the piping inside the basement and go thru the garage, with only 18" of PVC sticking up past the garage roof. Excellent! And now my radon level is around 1.0 to 1.5 all the time. The entire job took half a day, and Dave was clean, respectful and easy to work with. I absolutely recommend them."
Recommended by99%of homeowners
Avatar for Absolute Water System LLC
Absolute Water System LLC
4.7(
30
)
Radon Gas - AbatementRadon Gas - Testing

Serving Nashua, NH and surrounding areas

In business since 1981

Emergency services offered

Credit card accepted

"They were the first to give us a quote and were able to come out as soon as we needed them to. Installation was smooth, and they have been good at following up to make sure the system is working. Because our radon is still slightly high, they are doing another radon test and will follow up if it comes back high yet again. We would definitely recommend them to others!"
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Recommended by96%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

Installation typically takes 1-2 days, depending on the system and property layout.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

The Nashua, NH homeowners’ guide to radon detection and reduction services

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