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Radon gas testers in New Castle

Avatar for In and Out Home Inspections, LLC

In and Out Home Inspections, LLC

11722 Back Creek Road
4.86(
84
)
Approved Pro

In and Out Home Inspections, LLC

11722 Back Creek Road
4.86(
84
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
48 local quotes requested

Here at, In and Out Home Inspections, LLC, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Excellent and extremely thorough!"

Frank F on June 2024

Here at, In and Out Home Inspections, LLC, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Excellent and extremely thorough!"

Frank F on June 2024


Avatar for The Radon Bros LLC

The Radon Bros LLC

2522 Deep Creek Rd
4.86(
11
)
Approved Pro

The Radon Bros LLC

2522 Deep Creek Rd
4.86(
11
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
192 local quotes requested

The Radon Bros LLC 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.

"They didn't clean up, but it was a basement."

Dan K on May 2025

The Radon Bros LLC 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.

"They didn't clean up, but it was a basement."

Dan K on May 2025


Avatar for Lawson Home Services, LLC

Lawson Home Services, LLC

115 Atlantic Avenue
4.78(
55
)
Approved Pro

Lawson Home Services, LLC

115 Atlantic Avenue
4.78(
55
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
114 local quotes requested

Lawson Home Services is the one that gets it done. We are professionals and will solve your radon problems quickly. From start to finish we are working to reduce your radon levels by doing the job correctly. Give us a call today.

"Excellent work!"

Chuck R on February 2024

Lawson Home Services is the one that gets it done. We are professionals and will solve your radon problems quickly. From start to finish we are working to reduce your radon levels by doing the job correctly. Give us a call today.

"Excellent work!"

Chuck R on February 2024


Avatar for Lawson Home Services, LLC

Lawson Home Services, LLC

115 Atlantic Avenue
4.63(
35
)
Approved Pro

Lawson Home Services, LLC

115 Atlantic Avenue
4.63(
35
)
Approved Pro
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
255 local quotes requested

Full service Radon testing and mitigation, air duct and dryer vent cleaning, and blown-in attic insulation company. We service the entire state of Delaware and eastern Maryland.

"Very professional, knowledgeable, courteous and very customer focused. Would definitely use their services again!"

Chris A on November 2023

Full service Radon testing and mitigation, air duct and dryer vent cleaning, and blown-in attic insulation company. We service the entire state of Delaware and eastern Maryland.

"Very professional, knowledgeable, courteous and very customer focused. Would definitely use their services again!"

Chris A on November 2023


Avatar for Aerotek Environmental

Aerotek Environmental

3111 Route 38, #11, Suite 291
4.77(
79
)
Approved Pro

Aerotek Environmental

3111 Route 38, #11, Suite 291
4.77(
79
)
Approved Pro
Customers say: Quality work
287 local quotes requested
22 years of experience

Our mission is to provide a full service qualitative approach to indoor air quality and microbial concerns by coordinating the investigation, remedial design and application elements of each project. We are committed to achieve leadership and excellence in providing high quality microbial assessment, investigation and certified mold remediation services throughout NJ, PA, & DE. We believe this can be accomplished by recognizing and meeting our essential responsibilities to our clients, employees, suppliers, and the community. Our approach allows us to provide our clients cleaner and healthier living by utilizing practical experience, technical excellence, and client responsiveness.

"I needed to have a mold issue addressed in my condo which had developed due to a leak in the roof. I contacted Aerotek Environmental having received their contact details from Angi Ads. From my first contact with Brandon of Aerotek Environmental he was the most helpful of all that I had spoken to about my issue. In addition to giving a reasonable cost estimate, Brandon took the time to carefully explain the step by step remediation process that his company would provide which included digital photos before, during and on completion of work. Having decided to use Aerotech the process ran very smoothly from setting the schedule date through the actual work and payment for services. Communication with Brandon was excellent - If I called or sent a text Brandon would either promptly answer or respond in a very short time. On the scheduled day, Felix Castro (job foreman) and his team arrived on time. Felix explained in detail exactly what he and his team would be doing. On completion of the work, Felix ensured that all debris was removed and provided full details as to what had been done and what he and his team found to be the most likely area of the leak. I am very satisfied with the entire process of working with Brandon who along with Felix and his team provided excellent customer service and would not hesitate to call in again should the need arise. I would highly recommend Brian and Aerotek Environmental to anyone in need of mold remediation services"

Jim P on October 2024

Our mission is to provide a full service qualitative approach to indoor air quality and microbial concerns by coordinating the investigation, remedial design and application elements of each project. We are committed to achieve leadership and excellence in providing high quality microbial assessment, investigation and certified mold remediation services throughout NJ, PA, & DE. We believe this can be accomplished by recognizing and meeting our essential responsibilities to our clients, employees, suppliers, and the community. Our approach allows us to provide our clients cleaner and healthier living by utilizing practical experience, technical excellence, and client responsiveness.

"I needed to have a mold issue addressed in my condo which had developed due to a leak in the roof. I contacted Aerotek Environmental having received their contact details from Angi Ads. From my first contact with Brandon of Aerotek Environmental he was the most helpful of all that I had spoken to about my issue. In addition to giving a reasonable cost estimate, Brandon took the time to carefully explain the step by step remediation process that his company would provide which included digital photos before, during and on completion of work. Having decided to use Aerotech the process ran very smoothly from setting the schedule date through the actual work and payment for services. Communication with Brandon was excellent - If I called or sent a text Brandon would either promptly answer or respond in a very short time. On the scheduled day, Felix Castro (job foreman) and his team arrived on time. Felix explained in detail exactly what he and his team would be doing. On completion of the work, Felix ensured that all debris was removed and provided full details as to what had been done and what he and his team found to be the most likely area of the leak. I am very satisfied with the entire process of working with Brandon who along with Felix and his team provided excellent customer service and would not hesitate to call in again should the need arise. I would highly recommend Brian and Aerotek Environmental to anyone in need of mold remediation services"

Jim P on October 2024


Avatar for Bioclean

Bioclean

13 Summit Ave
5.00(
30
)
Approved Pro

Bioclean

13 Summit Ave
5.00(
30
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
186 local quotes requested

24 HR Service for Water, Mold & Fire Damage in the Philadelphia Area. In business since 2003, we are committed to excellence in restoring homes and commercial buildings in the Philadelphia Area. Certifications in Water Restoration by IICRC, Mold Testing & Air Quality Testing. Cleaning services include, Carpet, Area Rugs & HVAC System.

"Tim was great. Punctual, explained the whole process, and was very personable. Would highly recommend!"

Chris Q on November 2024

24 HR Service for Water, Mold & Fire Damage in the Philadelphia Area. In business since 2003, we are committed to excellence in restoring homes and commercial buildings in the Philadelphia Area. Certifications in Water Restoration by IICRC, Mold Testing & Air Quality Testing. Cleaning services include, Carpet, Area Rugs & HVAC System.

"Tim was great. Punctual, explained the whole process, and was very personable. Would highly recommend!"

Chris Q on November 2024


Avatar for Newman Waterproofing, LLC

Newman Waterproofing, LLC

4.98(
58
)
Approved Pro

Newman Waterproofing, LLC

4.98(
58
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
165 local quotes requested

Family owned business with over 20 years of experience handling all your Mold Testing & Remediation - Water & Smoke Damage. For residential and commercial.

"Steve and his crew did a great job coming out and installing a French drain on the side of my garage where water was getting in. I had previously contractors install one and it was not working properly at all. Steve has guaranteed me with his system my garage will stay 100 percent dry. Steve and his crew were professional and got the job done in a timely manner. We are so grateful for Newman Waterproofing"

Nick Q on August 2025

Family owned business with over 20 years of experience handling all your Mold Testing & Remediation - Water & Smoke Damage. For residential and commercial.

"Steve and his crew did a great job coming out and installing a French drain on the side of my garage where water was getting in. I had previously contractors install one and it was not working properly at all. Steve has guaranteed me with his system my garage will stay 100 percent dry. Steve and his crew were professional and got the job done in a timely manner. We are so grateful for Newman Waterproofing"

Nick Q on August 2025


Avatar for ACI-Tech Inc

ACI-Tech Inc

2300 W 4th St #6
4.78(
46
)
Approved Pro

ACI-Tech Inc

2300 W 4th St #6
4.78(
46
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
467 local quotes requested

ACI-Tech Inc. is a licensed and fully-certified provider of remediation services. Asbestos removal is not offered in New Jersey.

"Everything went great. From the estimate to scheduling to the work that was completed the job went smoothly."

Adam R on July 2025

ACI-Tech Inc. is a licensed and fully-certified provider of remediation services. Asbestos removal is not offered in New Jersey.

"Everything went great. From the estimate to scheduling to the work that was completed the job went smoothly."

Adam R on July 2025


Avatar for EcoTech Restoration Solutions

EcoTech Restoration Solutions

630 S Atlantic Ave
4.56(
27
)
Approved Pro

EcoTech Restoration Solutions

630 S Atlantic Ave
4.56(
27
)
Approved Pro
Customers say: Super punctual
923 local quotes requested
15 years of experience

Problem. Solved. EcoTech understands the worry and inconvenience that stem from a problem striking your home. Whether it be mold removal and remediation problems, or water, fire, and sewage damage issues our approach is to provide practical, timely, and lasting solutions for our customers that will ensure peace-of-mind. Our dedicated and skilled team of experts is trained to evaluate your situation, develop a comprehensive plan, and manage your project successfully. With a focus and commitment on quality for our customers, you can rest assured with EcoTech your Problem: Solved.

"They came and assessed the damage and told me they would give me an estimate in a couple of days. NO CONTACT SINCE, NEVER AN EMAIL OR PHONE CALL, NOTHING. I am very disappointed in them. In fact I contacted two other recommended contacts from Angie's list, NONE OF THEM GOT BACK TO US."

Jerome and Paulette L on July 2018

Problem. Solved. EcoTech understands the worry and inconvenience that stem from a problem striking your home. Whether it be mold removal and remediation problems, or water, fire, and sewage damage issues our approach is to provide practical, timely, and lasting solutions for our customers that will ensure peace-of-mind. Our dedicated and skilled team of experts is trained to evaluate your situation, develop a comprehensive plan, and manage your project successfully. With a focus and commitment on quality for our customers, you can rest assured with EcoTech your Problem: Solved.

"They came and assessed the damage and told me they would give me an estimate in a couple of days. NO CONTACT SINCE, NEVER AN EMAIL OR PHONE CALL, NOTHING. I am very disappointed in them. In fact I contacted two other recommended contacts from Angie's list, NONE OF THEM GOT BACK TO US."

Jerome and Paulette L on July 2018


Avatar for Tri State Flood Inc

Tri State Flood Inc

10 Grant Ave W
2.00(
1
)
Approved Pro

Tri State Flood Inc

10 Grant Ave W
2.00(
1
)
Approved Pro
2061 local quotes requested
21 years of experience

At Tri State Flood Inc, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of water, fires, mold and storms. Here’s what sets us apart: Water 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. Comprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup and fire restoration. Choose Tri State Flood Inc for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.

"Lesson learned. Always get an estimate. BEFORE the work is done. At least a digital copy. Arrangements for the project were made, with some one named Lynn, for the company to send someone to complete the work. We were quoted over the phone 4500-5000 which included a mold test. A sub contractor with an entirely different company (National Mold Company) was sent. When the contractor arrived, he stated that the job would be much more simpler than first thought. This led us to believe that the job would cost less, no. All said and done, they charged $5500. All said and done, it's almost like no work was done. The stains and the smell are still there. Only one actual board was taken upon the attic room. The ceiling in the bedroom was primed and painted but are still visible and have a funky smell. At this point I'm going to. Do what we should have done; Do the job ourselves. Just now with $5500 less dollars in our pockets. A detailed receipt was not given even though it was requested."

David B on August 2025

At Tri State Flood Inc, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of water, fires, mold and storms. Here’s what sets us apart: Water 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. Comprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup and fire restoration. Choose Tri State Flood Inc for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.

"Lesson learned. Always get an estimate. BEFORE the work is done. At least a digital copy. Arrangements for the project were made, with some one named Lynn, for the company to send someone to complete the work. We were quoted over the phone 4500-5000 which included a mold test. A sub contractor with an entirely different company (National Mold Company) was sent. When the contractor arrived, he stated that the job would be much more simpler than first thought. This led us to believe that the job would cost less, no. All said and done, they charged $5500. All said and done, it's almost like no work was done. The stains and the smell are still there. Only one actual board was taken upon the attic room. The ceiling in the bedroom was primed and painted but are still visible and have a funky smell. At this point I'm going to. Do what we should have done; Do the job ourselves. Just now with $5500 less dollars in our pockets. A detailed receipt was not given even though it was requested."

David B on August 2025

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FAQs for radon gas testing projects in New Castle, DE

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The New Castle, DE homeowners’ guide to radon gas testings
From average costs to expert advice, get all the answers you need to get your job done.
professional testing the air quality in a home
Apr 14, 2025
Apr 14, 2025
Budget for the cost of an indoor air quality test based on factors such as home size, pollutant type, potential remediation needs, labor, and more.
professional removing mold damaged wallpaper from home
Apr 25, 2025
Apr 25, 2025
Budget for mold inspection costs based on factors such as the size of your home, testing type, mold type, location, accessibility, and more.
professional testing for toxic lead in home
Apr 26, 2025
Apr 26, 2025
Budget for lead paint inspection costs based on factors such as home size, location, home condition, repairs and removal, additional tests, and more.
professional in protective suit removing asbestos from attic of home
Apr 25, 2025
Apr 25, 2025
Concerned about asbestos in your home? Learn how to identify, manage, and safely remove this hazardous material with expert guidance on abatement methods, regulations, and best practices.
Two professionals removing asbestos from a roof
Apr 26, 2025
Apr 26, 2025
Asbestos testing costs depend on the size of your home, its condition, and your location. This test ensures your home is safe from this hazardous material.
Professional in protective suit removing mold from home
Jun 24, 2025
Jun 24, 2025
Budget for mold remediation costs based on factors such as severity, location in the home, type of mold, damage type, and more.