Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Codorus, PA

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Codorus, PA?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Codorus

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018


Avatar for Enviroquest

Enviroquest

4.85(
104
)

Enviroquest

4.85(
104
)
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

Buying a home can be exciting, momentous, and meaningful. However, it can also be stressful - especially if you're not sure how to gauge the physical condition of a house. That's where the experts at Enviroquest come in. While you focus on the home's style, size, layout, price, and neighborhood, we can take care of evaluating its major systems - like the plumbing, heating, and electrical. Then, we'll provide you with a written report to help you make the best buying decision possible. Making sure you have all the information before you make such a significant decision simply makes sense, and in some cases is the law. Count on Enviroquest to give you the unbiased, professional opinion you need, when you need it.

"Brent was so great to work with! He was straight forward and communicative, going into detail where he needed to, and turned out an incredibly thorough report that my wife and I plan to use as reference for many years to come. I can’t recommend Enviroquest enough to conduct your home inspection."

Blake G on December 2023

Buying a home can be exciting, momentous, and meaningful. However, it can also be stressful - especially if you're not sure how to gauge the physical condition of a house. That's where the experts at Enviroquest come in. While you focus on the home's style, size, layout, price, and neighborhood, we can take care of evaluating its major systems - like the plumbing, heating, and electrical. Then, we'll provide you with a written report to help you make the best buying decision possible. Making sure you have all the information before you make such a significant decision simply makes sense, and in some cases is the law. Count on Enviroquest to give you the unbiased, professional opinion you need, when you need it.

"Brent was so great to work with! He was straight forward and communicative, going into detail where he needed to, and turned out an incredibly thorough report that my wife and I plan to use as reference for many years to come. I can’t recommend Enviroquest enough to conduct your home inspection."

Blake G on December 2023


Avatar for Joyland Roofing

Joyland Roofing

4.84(
204
)

Joyland Roofing

4.84(
204
)
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

Most people get frustrated when trying to communicate with a contractor. At Joyland Roofing, we set a new standard for roofers by corresponding quickly and often from start to finish. You’ll be provided with a clear roof analysis and estimate so you’re confident in our solution. Residential & Commercial roof replacements & repairs. Shingles, metal, rubber. Skylights, sun tunnels, gutters, windows, siding, chimney repairs. Serving Lancaster, Dauphin, Lebanon, Berks, York, Chester, Cumberland, and Montgomery Counties. We are certified by leading roof material manufacturers: GAF MasterElite, MuleHide, and Roofing Products International. We can offer industry-leading warranties and guarantees, & your roof will be installed using manufacturer recommended practices!

"Second time we've worked with Joyland on a full roof replacement - couldn't be more pleased! The process was handled professionally and with great communication. Ross began with an in-depth meeting to REALLY listen to what we wanted evaluated and our time constraints. He did a great job answering ALL our questions, examining our roof from the inside as well so there would be no surprises. He even identified chimney work for us to be aware of to get repaired. We had no idea it needed work. A crew was on site within DAYS to start and 2.5 days later, our new roof was COMPLETE. The workers were great and left the property spotless at the end of each day. Conrad - project manager - stayed 100% on top of the daily progress, keeping us informed at all times, even with some rain issues to work around. Taylor in the office was very efficient with all billing and contacts. Another roofer wanted over 75% paid BEFORE any work was done - Joyland had very reasonable terms! MANY THANKS - great job!"

Linda H on December 2025

Most people get frustrated when trying to communicate with a contractor. At Joyland Roofing, we set a new standard for roofers by corresponding quickly and often from start to finish. You’ll be provided with a clear roof analysis and estimate so you’re confident in our solution. Residential & Commercial roof replacements & repairs. Shingles, metal, rubber. Skylights, sun tunnels, gutters, windows, siding, chimney repairs. Serving Lancaster, Dauphin, Lebanon, Berks, York, Chester, Cumberland, and Montgomery Counties. We are certified by leading roof material manufacturers: GAF MasterElite, MuleHide, and Roofing Products International. We can offer industry-leading warranties and guarantees, & your roof will be installed using manufacturer recommended practices!

"Second time we've worked with Joyland on a full roof replacement - couldn't be more pleased! The process was handled professionally and with great communication. Ross began with an in-depth meeting to REALLY listen to what we wanted evaluated and our time constraints. He did a great job answering ALL our questions, examining our roof from the inside as well so there would be no surprises. He even identified chimney work for us to be aware of to get repaired. We had no idea it needed work. A crew was on site within DAYS to start and 2.5 days later, our new roof was COMPLETE. The workers were great and left the property spotless at the end of each day. Conrad - project manager - stayed 100% on top of the daily progress, keeping us informed at all times, even with some rain issues to work around. Taylor in the office was very efficient with all billing and contacts. Another roofer wanted over 75% paid BEFORE any work was done - Joyland had very reasonable terms! MANY THANKS - great job!"

Linda H on December 2025


Avatar for Hershocks Inc

Hershocks Inc

4.76(
101
)

Hershocks Inc

4.76(
101
)
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

Hershocks, Inc. is one of the largest specialty contractors in Pennsylvania serving residential and commercial customers with skill and integrity for over seven decades. We bring our vast experience base to the table when serving our residential customers as well. For home owners we specialize in Garage Doors, Glass, Mirrors, Glass Shower Enclosures, and Glass Shower Doors. Our expert technicians can help with all your installation, service and repair needs. 24 Hour Emergency Service is available.

"Greg , the owner has horrible customer service, they don’t stand behind their work. I had a leak and called him on November 30 of 2022, one of his guys came out told us they will be back to fix the window. Never heard from them again. On September 26, 2023 I called them because they didn’t do anything. Of course they’re not taking any blame, when I called him out on it, he hung up on me. I would not recommend this company. The owner is very angry and combative."

Steven B on April 2024

Hershocks, Inc. is one of the largest specialty contractors in Pennsylvania serving residential and commercial customers with skill and integrity for over seven decades. We bring our vast experience base to the table when serving our residential customers as well. For home owners we specialize in Garage Doors, Glass, Mirrors, Glass Shower Enclosures, and Glass Shower Doors. Our expert technicians can help with all your installation, service and repair needs. 24 Hour Emergency Service is available.

"Greg , the owner has horrible customer service, they don’t stand behind their work. I had a leak and called him on November 30 of 2022, one of his guys came out told us they will be back to fix the window. Never heard from them again. On September 26, 2023 I called them because they didn’t do anything. Of course they’re not taking any blame, when I called him out on it, he hung up on me. I would not recommend this company. The owner is very angry and combative."

Steven B on April 2024


"Mike was professional and easy to talk to. He was very thorough, and made sure we understood any issues he found. I would definitely recommend!"

Dawn F on May 2020

I have been in business since 2005.

"Mike was professional and easy to talk to. He was very thorough, and made sure we understood any issues he found. I would definitely recommend!"

Dawn F on May 2020


Avatar for Buyers Eyes Home Inspections LLC

Buyers Eyes Home Inspections LLC

5.00(
14
)

Buyers Eyes Home Inspections LLC

5.00(
14
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Buyers Eyes Home Inspections LLC is a locally owned and operated company that values honesty and integrity and will inspect your home as if we were buying it for ourselves. You will find us competitively priced. Licensed Home Inspector in Md. and Pa. Also Offering Radon Testing. Very detailed inspections with digital photos. Same day electronic reporting. I have been doing residential inspections for 35 years with a large insurance company so I am very experienced Now in business for myself. I am an electrician as well. **Also offering Radon Testing and Wood Destroying Insect Inspections. 301-676-7097

"Brett arrived on time and completed a detailed inspection of the interior and exterior. He also taught me about important aspects of home maintenance as he completed the assessment. The completed report was detailed and emailed to me very quickly."

Chris B on September 2021

Buyers Eyes Home Inspections LLC is a locally owned and operated company that values honesty and integrity and will inspect your home as if we were buying it for ourselves. You will find us competitively priced. Licensed Home Inspector in Md. and Pa. Also Offering Radon Testing. Very detailed inspections with digital photos. Same day electronic reporting. I have been doing residential inspections for 35 years with a large insurance company so I am very experienced Now in business for myself. I am an electrician as well. **Also offering Radon Testing and Wood Destroying Insect Inspections. 301-676-7097

"Brett arrived on time and completed a detailed inspection of the interior and exterior. He also taught me about important aspects of home maintenance as he completed the assessment. The completed report was detailed and emailed to me very quickly."

Chris B on September 2021


Avatar for SWAT Environmental of Pennsylvania

SWAT Environmental of Pennsylvania

4.39(
41
)

SWAT Environmental of Pennsylvania

4.39(
41
)
Customers say: Super punctual
37 years of experience

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental. Additional Phone:1-888-286-2822

"Install done in 2023 and parts was under warranty. 2 years later it breaks and the company wants to charge to fix it. Product under warranty mean no charge to home owner. Not a reliable company. "

Jay B on December 2025

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental. Additional Phone:1-888-286-2822

"Install done in 2023 and parts was under warranty. 2 years later it breaks and the company wants to charge to fix it. Product under warranty mean no charge to home owner. Not a reliable company. "

Jay B on December 2025


RJH Radon Mitigation Inc

4.82(
17
)

RJH Radon Mitigation Inc

4.82(
17
)
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

RJH Radon Mitigation Inc. specializes in the design and installation of high quality, efficient, unobtrusive radon mitigation systems. We are certified by the PA. Department of Environmental Protection, Bureau of Radiation Protection, as a certified Mitigation firm. We are also registered in Pennsylvania as a Home Improvement Contractor PA074054 and carry all required insurances. Offering radon mitigation since 1998 our goal is to provide excellent customer service while delivering the best product at the lowest possible price. We are an active member of the American Association of Radon Scientists and Technologists (AARST). Attending their annual conferences keep us up to date on the latest technology enabling us to lower radon levels to the lowest possible levels. We are flexible with our scheduling in order to meet your needs. RJH Radon Mitigation offers a 10 year guarantee that levels will be maintained. After installation test kits that include lab fees are provided to ensure levels are achieved. Change of ownership has no affect on warranties and guarantees.

"everything went well.. great service at my location,,, only issue was that first time I call had to leave a message to return my call for service.. waited around 2 weeks, never got a call back..so I called again and was able to speak to someone.. I guess there answering service went bad... or I fell thru the cracks.."

Alfredo P on August 2020

RJH Radon Mitigation Inc. specializes in the design and installation of high quality, efficient, unobtrusive radon mitigation systems. We are certified by the PA. Department of Environmental Protection, Bureau of Radiation Protection, as a certified Mitigation firm. We are also registered in Pennsylvania as a Home Improvement Contractor PA074054 and carry all required insurances. Offering radon mitigation since 1998 our goal is to provide excellent customer service while delivering the best product at the lowest possible price. We are an active member of the American Association of Radon Scientists and Technologists (AARST). Attending their annual conferences keep us up to date on the latest technology enabling us to lower radon levels to the lowest possible levels. We are flexible with our scheduling in order to meet your needs. RJH Radon Mitigation offers a 10 year guarantee that levels will be maintained. After installation test kits that include lab fees are provided to ensure levels are achieved. Change of ownership has no affect on warranties and guarantees.

"everything went well.. great service at my location,,, only issue was that first time I call had to leave a message to return my call for service.. waited around 2 weeks, never got a call back..so I called again and was able to speak to someone.. I guess there answering service went bad... or I fell thru the cracks.."

Alfredo P on August 2020


Avatar for C.A.R.E Property Services

C.A.R.E Property Services

5.00(
4
)

C.A.R.E Property Services

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Commercial And Residential Experts - The only call you need! C.A.R.E. Property Services is dedicated to providing the highest level of quality and customer service possible. We are a single-source construction, restoration, and a full-service Energy Services Company. We are proud to be based locally in our communities and provide services to all of Delaware, Maryland, and Central Pennsylvania with offices located in Hanover, PA and Ocean City, MD. All of our project managers are certified in their defined area of expertise. With over 35 years of commercial and residential construction, energy conservation and restoration experience, C.A.R.E. Property Services is there for all of your property care needs.

"They did a good job"

Tim M on July 2020

Commercial And Residential Experts - The only call you need! C.A.R.E. Property Services is dedicated to providing the highest level of quality and customer service possible. We are a single-source construction, restoration, and a full-service Energy Services Company. We are proud to be based locally in our communities and provide services to all of Delaware, Maryland, and Central Pennsylvania with offices located in Hanover, PA and Ocean City, MD. All of our project managers are certified in their defined area of expertise. With over 35 years of commercial and residential construction, energy conservation and restoration experience, C.A.R.E. Property Services is there for all of your property care needs.

"They did a good job"

Tim M on July 2020


Helping Solutions, LLC

4.80(
5
)

Helping Solutions, LLC

4.80(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Inspection firm that specializes in residential and small commercial inspections. We can evaluate indoor air quality, water quality, test and remediate mold, measure and mitigate radon, as well as sample for the presence of lead or asbestos.

"If you’re looking to get any type of inspection or home services then look no further. I recently became a customer of Justin Ake after trying to get my soon to be home inspected. Rick was dispatched to the property and went above and beyond, both explaining the inspection process and showing me key points in the houses plumping and drainage systems. As well as providing information on other tests and services the company performs. I don’t normally write reviews, but I have to say this is one business that takes pride in their trade."

Jarrod H on February 2023

Inspection firm that specializes in residential and small commercial inspections. We can evaluate indoor air quality, water quality, test and remediate mold, measure and mitigate radon, as well as sample for the presence of lead or asbestos.

"If you’re looking to get any type of inspection or home services then look no further. I recently became a customer of Justin Ake after trying to get my soon to be home inspected. Rick was dispatched to the property and went above and beyond, both explaining the inspection process and showing me key points in the houses plumping and drainage systems. As well as providing information on other tests and services the company performs. I don’t normally write reviews, but I have to say this is one business that takes pride in their trade."

Jarrod H on February 2023

Showing 1-10 of 29
Radon Detection and Reduction questions, answered by experts

Since radon typically comes out of the soil, it is most commonly found in the lower levels of a home. In houses with basements, that's a common location for radon. Homes built directly on the ground may have radon on the ground floors. Radon can be found on the upper floors of the home, but often in lower concentrations than in lower levels.

Radon is a colorless, odorless gas that can cause lung cancer; testing ensures safe indoor air quality.

Costs depend on test type, home size, number of testing locations, and whether follow-up testing is required.

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 only way to determine if you have a radon problem in your home is to have professional testing done. You can buy DIY radon test kits, but these are sometimes inaccurate in certain temperatures and humidity levels, and they don’t paint the entire picture in terms of your radon exposure. Scheduling testing once every two to five years is best. You can also look out for the following symptoms, which, according to the American Cancer Society, are symptoms of radon exposure:

  • Shortness of breath

  • Cough

  • Tightness in the chest

  • Difficulty swallowing

  • Hoarseness

The Codorus, PA 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.

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"