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Avatar for Airtight Radon Solutions LLC
Airtight Radon Solutions LLC
5.0(
29
)
Radon Gas - AbatementRadon Gas - Testing

Serving Concord, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Offers commercial services

"Airtight did a great job from start to finish. Pre-mitigation testing showed radon levels ranging from 3-12 pCi/L, with an average above EPA recommendations. Accurate estimate, explained every step along the way. The actual job was complete in less than a day! Radon levels taken through the pilot holes were through the roof (150 pCi/L for one hole, average of 118 for all pilot holes)! Now the levels average at 1.7 pCi/L over a three day period, with only a single data point hitting 3. I highly recommend Airtight Radon Solutions, LLC for radon mitigation!"
My Projects
Radon Mitigation Ranch
Response time6 hrs
Response rate98%
25 neighbors recently requested a quote
Avatar for Indoor Environmental
Indoor Environmental
5.0(
56
)
Radon Gas - Testing

Serving Concord, NH and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Jon came by for a consult to look at some ugly looking black staining that was growing in my basement. He was very professional and punctual and thoroughly explained why it was not mold, but harmless mildew and how to rectify it. I was so appreciative for his integrity and honesty and I will absolutely use Indoor Environmental if I ever do get mold in my house."
2 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 Concord, NH and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Mark, the owner came over himself to estimate the job. He was extremely knowledgeable and was able to explain what and why they were going to do. He also was able to give comparisons of equipment used by other companies. The front office kept me updated on tests and appointments, timely. His crew was very professional and PUNCTUAL! They took the time to remove all signs and equipment of my old water system, which they didn't have to do. Due to hard-packed dirt under my basement floor, they had to return 3 times to bring my Radon Air within EPA standards. However, the quoted price didn't change, and each time the crew was as professional as their first visit. I highly recommend Mark and US Water Consultants for your Radon Air Mitigation and any water improvements and modifications."
Response time1 day
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for True North Home Inspections, LLC
True North Home Inspections, LLC
4.9(
26
)
Radon Gas - Testing

Serving Concord, 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%
5 neighbors recently requested a quote
Avatar for Absolute Water System LLC
Absolute Water System LLC
4.7(
30
)
Radon Gas - AbatementRadon Gas - Testing

Serving Concord, 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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Additional Photos
Additional Photos
Recommended by96%of homeowners
Avatar for Rhino Radon Services
Rhino Radon Services
4.2(
9
)
Radon Gas - AbatementRadon Gas - Testing

Serving Concord, NH and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"He was on time, arrived at 9am as quoted and began to install the system. The system required two suction points and a sump pit cover. The sump pit originally had a pedestal pump in place and none of the other radon companies would change the pedestal pump to a submersible pump as required for the mitigation system to function properly. Rhino Radon not only changed the pump but installed a back flow check valve to ensure proper functioning of the system. All of the other companies said we would have to employ a plumber or a handy man to get this done. Had we gone that route the closing would not have happened. Rhino Radon gladly did all the work required and didn't even break for lunch!!! He was more concerned with getting us out of the vacant house seeing we are already down the cape. The system that involved a crawl space and being vented through the garage roof was completed immaculately and the test results came back at 0.5 pCil/L. This pleased the lender and buyer and exceeded our expectations. We highly recommend Rhino Radon Services.
"
Recommended by100%of homeowners
D S ROOFING
4.5(
39
)
Radon Gas - AbatementRadon Gas - Testing

Serving Concord, NH and surrounding areas

In business since 1993

Emergency services offered

"Dennis and his team did a good job. They completed the work quickly and have stood behind the install. There were some challenges due to the less than optimal nature of the house structure which required some follow-up work (small leak near a hip that abuts a chimney and an uneven valley in another area). This is the second property our family has had Dennis install a new roof on."
Recommended by90%of homeowners
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Radon Detection and Reduction questions, answered by experts

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

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).

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

The Concord, 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.