*The Angi rating for Radon Detection And Reduction companies in Landenberg, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.
*The HomeAdvisor rating for Radon Detection And Reduction companies in Landenberg, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.
Last update on March 08, 2026
Serving Landenberg, PA and surrounding areas
Approved
Super Service Award Winner
In business since 2018
Free estimates
Warranties offered
"Replaced our aging radon fan for a reasonable price."
+8
Serving Landenberg, PA and surrounding areas
Approved
Super Service Award Winner
In business since 1980
Free estimates
Emergency services offered
"Matt did a well-crafted job, finished in 3 hours, radon down to 0.6 when I checked the next morning."
Serving Landenberg, PA and surrounding areas
Approved
In business since 2015
Free estimates
Credit card accepted
"I have worked with SIS on numerous occasions as I completely trust them with my testing needs (mold & radon). They are responsive and knowledgeable, having extensive training and experience. Bob and Mary Ann are professional and courteous while providing a competitive price for their services. I highly recommend SIS for mold and radon testing!"
+3
Serving Landenberg, PA and surrounding areas
In business since 2008
Free estimates
Emergency services offered
"adon After I contacted him, he responded promptly. While evaluating the area that needed radon mitigation, he called to discuss an area that had not been evaluated by inspectors (not affiliated with him). After accepting his price, we agreed on the day for the installation. During the installation, he was respectful and communicative. After completing the installation, he provided written warranties for me and the buyer. I highly recommend Keystone Radon Mitigators.
"
Serving Landenberg, PA and surrounding areas
In business since 2019
Free estimates
Emergency services offered
"I highly recommend J&A Environmental for any remediation work you need done. Al and his crew are thorough, efficient, clean and courteous. Before starting the work, all details are meticulously explained and priced competitively. After the work is complete, same thing, comprehensive review of what was done. They go the extra mile, and it's obvious they take pride in doing it right and making sure the homeowner is 100% satisfied."
+88
Serving Landenberg, PA and surrounding areas
In business since 1998
Credit card accepted
"Michael was prompt and very helpful."
Serving Landenberg, PA and surrounding areas
In business since 2009
Free estimates
Credit card accepted
"I would recommend them to anyone! They did a fantastic job and was very thorough with everything in the home! Worth the money!"
Serving Landenberg, PA and surrounding areas
In business since 2010
Free estimates
Emergency services offered
"I could not be happier with this company. They did the work right away, even working on the weekends. They were very knowledgeable about what needed to be done and how to get the debris tested they have been very responsive. They have continued to be helpful to me in dealing with the company that left the silica dust in my home. You will not be disappointed if you use this company. I have never seen a company that is so attentive to your needs.
"
Serving Landenberg, PA and surrounding areas
In business since 2008
Free estimates
Emergency services offered
"I am very pleased with the quality work and how quickly my water damage issue resolved. They were extremely professional and knowledgeable and did a great job at keeping me up to date on the progress of the cleanup."
+57
Serving Landenberg, PA and surrounding areas
In business since 1995
Free estimates
Emergency services offered
"It went well, the ducts needed cleaned badly. After the initial cleaning, there is an every 6 months check-up that was included for a number of years."
From average costs to expert advice, get all the answers you need to get your job done.
The cost of a radon mitigation system in Philadelphia, PA, depends mostly on the type of system being installed. Use this guide to learn about your options.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.
