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

Avatar for Avert Radon LLC
Avert Radon LLC
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving Philadelphia, TN and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Avert Radon LLC , specifically Chance, recently completed radon mitigation work at my residence, installing two systems. I typically refrain from writing reviews, but felt compelled to share my experience with Avert Radon LLC . I'm extremely satisfied with the results, as the radon levels are now virtually undetectable. Chance demonstrated exceptional professionalism throughout the process. The communication was excellent, and their meticulous attention to detail was also outstanding. Furthermore, their post-installation follow-up has been consistently excellent. I highly recommend this company without reservation. They are among the best service providers I've encountered. if I could give it more than five stars, I certainly would!"
Mitigation Install
Mitigation Install
Radon Mitigation
Radon Measurement
6 neighbors recently requested a quote
Avatar for TEK Inspections
TEK Inspections
5.0(
24
)
Radon Gas - Testing

Serving Philadelphia, TN and surrounding areas

Approved

In business since 2019

Credit card accepted

Customers say: Quick response

"Ed was so friendly and through, answered any and all questions for me. I am a first time home buyer and he put me at ease with explanation! I will suggest him to anyone in the future I know purchasing a home!"
InterNACHI
Certified Professional Inspector
Radon Certified Tester
Response time5 hrs
Response rate96%
Recommended by95%of homeowners
Avatar for GreenFrog LLC
GreenFrog LLC
4.2(
10
)
Radon Gas - AbatementRadon Gas - Testing

Serving Philadelphia, TN and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Went well. Since I was not clear on what they had done during their initial visit, they came back and answered all of my questions to my satisfaction. They were determined to make things right."
Additional Photos
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+2

Response time10 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Inspect the Smokies
Inspect the Smokies
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving Philadelphia, TN and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"I am a homebuyer. I contacted the Inspector (Pat) through Angies list asking if he could provide me several days and times he would be available for doing a home inspection, and also for pricing. He was prompt in replying, provided both pieces of information requested, and also noted that he could do Radon inspections at a good price. His response to me was very professional and made a good impression on me."
Additional Photos
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+61

Recommended by100%of homeowners
Avatar for Falcon Home Inspections
Falcon Home Inspections
5.0(
3
)
Radon Gas - Testing

Serving Philadelphia, TN and surrounding areas

In business since 2016

Free estimates

Credit card accepted

At Falcon Home Inspections, we pride ourselves on quality that customers can believe in. Whatever your home inspection and radon testing needs are, we can take care of all your requests. When it comes to our business, customer satisfaction is our main priority and we treat every home like it's our own. We look forward to working with you!

Home Inspection
Home Inspection
home inspection
Response time5 hrs
Recommended by100%of homeowners
Avatar for Knoxville Home Inspections LLC
Knoxville Home Inspections LLC
5.0(
11
)
Radon Gas - Testing

Serving Philadelphia, TN and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Steven, is absolutely a PRO!! Steven, is one of the kindest, and caring individuals that I have met. He done a fantastic job, and was very thorough in everything. I will be using him again in the near future. I would highly recommend him to anyone."
Gas Inspection
Level Inspection
Exterior
Information
Response time4 hrs
Response rate95%
Recommended by80%of homeowners
Avatar for Master Services
Master Services
4.5(
197
)
Radon Gas - AbatementRadon Gas - Testing

Serving Philadelphia, TN and surrounding areas

Free estimates

Emergency services offered

Warranties offered

"With the recent snow melt and the rain we are having this may be a timely recommendation. I hope you don’t have this need, but if you do I would like to recommend Master Service Company. We had at least six estimates for waterproofing our basement and although not nearly the cheapest, we were impressed by the presentation and the personnel and low key sales approach. So, we hired them! The work was done last week and again we were impressed with the crew doing the work, the care given to hold down the dust created, the quality of the materials used, and the willingness of the crew to keep us apprised of the job as it progressed. The was great care given to cleanup of what is a very messy job. We waited until the repair had been “battle tested”, (and this inclement weather has certainly accomplished that) before writing a recommendation. We could not be more pleased at this point. Again I hope you don’t have the need, but if you do give Mr. Jeff Russell at Master Service a call. Contact: Jeff Russell 317-720-3288."
Before
After
Response time1 day
Response rate100%
Recommended by93%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

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.

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

The average radon mitigation system uses about 876 kWh of electricity per year, although the exact amount of electricity used will vary depending on the size of the radon fan. Once the system is installed, the annual increase to your energy bill could range from $30 to $300 per year, again depending on the size of the fan.

The Philadelphia, TN 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.