*The Angi rating for Radon Detection And Reduction companies in Downingtown, 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 Downingtown, 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 September 24, 2025
Serving Downingtown, 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 Downingtown, 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 Downingtown, PA and surrounding areas
Approved
In business since 2007
Free estimates
Credit card accepted
"Thorough and informative. Our inspector, Chris, was there before our appointment to unlock doors, turn on lights, and get acclimated with the house. The inspection lasted about 3 hours and Chris explained things as he went. Chris even made it on to the very steep roof. We received the report the very next day. The report was thorough and clear with pictures for every finding."
+1
Serving Downingtown, PA and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
"Tom was wonderful and extremely thorough! He explained everything as he went along and I left feeling like I really knew the ins and outs of the property. He was extremely personable and very professional. He called to schedule and follow up prior to the date of the inspection. I felt confident in him during the entire process. I would recommend him to anyone."
Serving Downingtown, 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 Downingtown, PA and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
At Best Option Restoration of Montgomery County, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of mold, water, and storms. Here’s what sets us apart:\n\nMold Remediation: Our certified experts assess and isolate mold contamination, ensuring thorough removal and preventing further spore spread. We identify the root cause, devise effective solutions, and prioritize your safety.\nWater Removal and Storm Damage Restoration: When water wreaks havoc due to storms or other incidents, we’re here to help. Our 24/7 emergency response team swiftly tackles water extraction, drying, and structural repairs.\n\nComprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup\nChoose Best Option Restoration of Montgomery County for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.
Serving Downingtown, 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.
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Serving Downingtown, 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 Downingtown, PA and surrounding areas
In business since 1998
Credit card accepted
"Michael was prompt and very helpful."
Serving Downingtown, PA and surrounding areas
In business since 2020
Free estimates
Emergency services offered
"Ram mediation did a great job. They covered everything and left the house clean and mold free. I would recommend them highly"
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.
