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

Avatar for Radon Shield LLC
Radon Shield LLC
4.9(
103
)
Radon Gas - AbatementRadon Gas - Testing

Serving Sewell, NJ and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"Radon Shield was hired after I got a higher then expected reading for radon in by home when selling it. Benedict shared a lot of great advice about radon gas in the home, he was able to schedule the install in a very fast time frame which was extremely helpful because I was selling my home. The quality of work was outstanding and he did a great job explaining thing to me and by wife. He also did a great job cleaning up after the install. I would hire Radon Shield in the future in needed."
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+10

Recommended by100%of homeowners
Huber Radon
3.9(
4
)
Radon Gas - Abatement

Serving Sewell, NJ and surrounding areas

In business since 1986

Free estimates

Offers commercial services

Huber Radon is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time1 day
Recommended by66%of homeowners
Avatar for United Emergency Services
United Emergency Services
5.0(
4
)
Radon Gas - Testing

Serving Sewell, NJ and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"United Emergency Services did an outstanding job on my home. They were punctual, professional, and worked extremely efficiently to get back home back together in a timely manner. 10/10 would use again."
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+2

Recommended by100%of homeowners
Radon Detection and Reduction FAQs, answered by experts

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

You can vent radon out of your house sometimes by simply opening a window, but it won’t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

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

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

The Sewell, NJ 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.