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

Serving Watertown, MA 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%
30 neighbors recently requested a quote
Avatar for Indoor Environmental
Indoor Environmental
5.0(
56
)
Radon Gas - Testing

Serving Watertown, MA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"very quick process much less involved than I imagined. Mold testing done then a few days later, solution applied everywhere downstairs. after process completed, company came back and did another test for mold."
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Omega Home Inspections, LLC
Omega Home Inspections, LLC
5.0(
16
)
Radon Gas - Testing

Serving Watertown, MA and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: Quick response

"This is our first time buying a home and everything I read online made me feel I wasn't likely to find an inspector who actually took the time needed to really look at everything and give us a good inspection. I looked at 4 websites of inspection companies and chose Omega. The website provided information about Stuart and what his inspection covers. Our first call with him was pleasant and he was upfront about all the answers to our questions and the pricing. There were no surprises. He arrived early for the inspection, really took his time to examine, poke and test everything. He walked us through what he was looking at and explained any problems or lack of problems. He was very thorough and we'd recommend him to anyone! We'd also use him again if we have the need. You won't be disappointed with his service in any way!"
Knob & tube wiring
Attic Mold
Cracked Sewer Pipe
CO Gas Leak
Gas Leak

+3

Response time6 hrs
Response rate95%
6 neighbors recently requested a quote
Avatar for Erickson Foundation Solutions
Erickson Foundation Solutions
4.1(
75
)
Radon Gas - AbatementRadon Gas - Testing

Serving Watertown, MA and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"I hired Erickson Foundation for radon mitigation. Job went smoothly. They communicated well, were very professional, and reviewed all potential options for the job with me. The system installation was done on time, professionally done, and well cleaned-up. The equipment is high quality, with the 10-year warranty being a big plus."
Sinking Step Repair
Settling Home Addition
Settling Slab
EZ Posts for deck addition
Foundation Crack Repair

+60

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

Serving Watertown, MA and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"On a whim I decided to check our radon levels in our basement. I guess I assumed this would have been done by the previous homeowner. Apparently one should never assume. My test game back at 5.9 pCi/L. The acceptable level is 4. And I wasn't going to chance my family's health. So I did my research on radon mitigation and sent a quote request through Angi's platform. I received a phone call the owner, John Spokis within 30 minutes on the Friday before New Year's. He explained the entire process and provided me transparent pricing over the phone and in writing via email same day. He was able to schedule us that Monday after New Year's. The installer Derek called me an hour before arrival to let me know he was on his way. He arrived on time, explained the work that was to be performed, reviewed the location with me and made sure I approved of everything before he started. The installation itself took about two hours. This included patching some cracks we had in our concrete at no additional charge. Frankly, I wasn't terribly excited about having a big white fan unit and pipe installed along my house. But I also knew that this was the optimal solution for our needs. And Derek took the time to make it look as neat and clean as possible. I really couldn't have asked for an easier or more pleasant installation at a very fair price. Oh and they guarantee after install that your radon will be 2pCi/L or below. They even give you a kit to test and make sure it has been lowered. There is a lifetime warranty on parts and labor that is transferable if you sell your home. And the fan has a 5 year warranty. So, if you have unsafe radon levels in your home. Don't procrastinate like I did. Just call Radon Systems and get it done in two hours. You'll be glad you did. I am."
Recommended by99%of homeowners
Avatar for Absolute Water System LLC
Absolute Water System LLC
4.7(
30
)
Radon Gas - AbatementRadon Gas - Testing

Serving Watertown, MA 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 questions, answered by experts

Mitigation reduces radon levels, protecting your health and complying with safety standards.

Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.

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

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

The Watertown, MA 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.