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Radon gas testers in Cortland

Avatar for PROFESSIONAL RADON SYSTEMS INC

PROFESSIONAL RADON SYSTEMS INC

10212 S Mandel St
4.84(
86
)
•Approved Pro

PROFESSIONAL RADON SYSTEMS INC

10212 S Mandel St
4.84(
86
)
•Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
99 local quotes requested

****** WE ARE NOT A RADON TESTER***** We have been servicing the greater Chicagoland area since 1988. Our state certified technicians perform all radon mitigation installations. We offer hassle-free, prompt, professional residential and commercial radon mitigation services. ******* PLEASE NOTE!!!****** The coupon that is available on our listing is only valid for Angi members. If you are taking advantage of this savings opportunity, the coupon must be printed and presented along with your payment. NO EXCEPTIONS!

"Work completed as expected"

Jim S on December 2024

****** WE ARE NOT A RADON TESTER***** We have been servicing the greater Chicagoland area since 1988. Our state certified technicians perform all radon mitigation installations. We offer hassle-free, prompt, professional residential and commercial radon mitigation services. ******* PLEASE NOTE!!!****** The coupon that is available on our listing is only valid for Angi members. If you are taking advantage of this savings opportunity, the coupon must be printed and presented along with your payment. NO EXCEPTIONS!

"Work completed as expected"

Jim S on December 2024

Avatar for AdvantaClean of Northwest Chicagoland

AdvantaClean of Northwest Chicagoland

555 Plate Drive
4.97(
110
)
•Approved Pro

AdvantaClean of Northwest Chicagoland

555 Plate Drive
4.97(
110
)
•Approved Pro
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
331 local quotes requested

AdvantaClean of Northwest Chicagoland is locally owned and operated by JT and Marie Maier. Because your satisfaction is our top priority, we promise to provide you with the best service experience possible. We have a team of caring, industry-trained and certified professionals ready to address your needs. Whether responding to emergency water damage or mold or moisture intrusion, we ensure that the air you breathe is clean and healthy. We look forward to meeting you!

"Yes, the team was wonderful. They were here from 7:00am until 4:30pm. They did everything that they said they would do - cleaned and moved contents of the attic to a different part of the house, removed excess attic insulation, and removed all the mold. They even vacuumed the carpet in the bedroom where the access to the attic was after they were done. The team took the time to answer our questions and explain precautions."

Yale R on May 2025

AdvantaClean of Northwest Chicagoland is locally owned and operated by JT and Marie Maier. Because your satisfaction is our top priority, we promise to provide you with the best service experience possible. We have a team of caring, industry-trained and certified professionals ready to address your needs. Whether responding to emergency water damage or mold or moisture intrusion, we ensure that the air you breathe is clean and healthy. We look forward to meeting you!

"Yes, the team was wonderful. They were here from 7:00am until 4:30pm. They did everything that they said they would do - cleaned and moved contents of the attic to a different part of the house, removed excess attic insulation, and removed all the mold. They even vacuumed the carpet in the bedroom where the access to the attic was after they were done. The team took the time to answer our questions and explain precautions."

Yale R on May 2025

Avatar for Environmental Services Corp

Environmental Services Corp

3951 Granite Court
5.00(
49
)
•Approved Pro

Environmental Services Corp

3951 Granite Court
5.00(
49
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1267 local quotes requested

We specialize in Asbestos Testing, Asbestos Removal, Mold Mitigation, Demolition, concrete Epoxy Flooring, Flood Restoration, Cleaning services, and general home repairs. Contact us for a free estimate. With 20 years of experience, we stand out Keeping Your Space Safe.

"Marcos was friendly and fast, and flexible in scheduling. He and his crew did a great job for us in removing asbestos tiles from our basement flooring so we could have interior drain tiling installed. In the process, they also discovered some mold, which they were able to deal with at the same time. He came with a large crew, so they finished a large job very quickly. The space was well cleaned afterwards, and we received the necessary clearances. Highly recommend."

Kirsty C on June 2025

We specialize in Asbestos Testing, Asbestos Removal, Mold Mitigation, Demolition, concrete Epoxy Flooring, Flood Restoration, Cleaning services, and general home repairs. Contact us for a free estimate. With 20 years of experience, we stand out Keeping Your Space Safe.

"Marcos was friendly and fast, and flexible in scheduling. He and his crew did a great job for us in removing asbestos tiles from our basement flooring so we could have interior drain tiling installed. In the process, they also discovered some mold, which they were able to deal with at the same time. He came with a large crew, so they finished a large job very quickly. The space was well cleaned afterwards, and we received the necessary clearances. Highly recommend."

Kirsty C on June 2025

Pretty Odd Workers

No reviews yet

Pretty Odd Workers

No reviews yet
10 years of experience

Pretty Odd Workers strives for success and a happy customer! We will work with you and for you to get the job done for you, how you want it, and at a reasonable price!!!

Pretty Odd Workers strives for success and a happy customer! We will work with you and for you to get the job done for you, how you want it, and at a reasonable price!!!

Load Runner Services

.
5.00(
4
)

Load Runner Services

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

Welcome to Load Runner Services, your trusted local, family-owned company committed to simplifying your moving needs. Whether you're looking to declutter your home, dispose of construction debris, sourcing landscaping materials or transport heavy equipment across state lines, we've got you covered with our heavy-duty trailers and expert team. Too much stuff cluttering your space? Need materials for your next project? Reach out to us at 844-OFF-LOAD (633-5623) today for a complimentary estimate and let us exceed your expectations with our exceptional service. We OFF-LOAD your load, quick, efficient and hassle-free

"Arun was quick to come out, and was an immense help in cleaning out my garage. Very professional and would definitely hire again."

Omar G on July 2024

Welcome to Load Runner Services, your trusted local, family-owned company committed to simplifying your moving needs. Whether you're looking to declutter your home, dispose of construction debris, sourcing landscaping materials or transport heavy equipment across state lines, we've got you covered with our heavy-duty trailers and expert team. Too much stuff cluttering your space? Need materials for your next project? Reach out to us at 844-OFF-LOAD (633-5623) today for a complimentary estimate and let us exceed your expectations with our exceptional service. We OFF-LOAD your load, quick, efficient and hassle-free

"Arun was quick to come out, and was an immense help in cleaning out my garage. Very professional and would definitely hire again."

Omar G on July 2024

Integrity Building & Remodeling

5110 Highcrest Rd.
4.81(
31
)

Integrity Building & Remodeling

5110 Highcrest Rd.
4.81(
31
)
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Integrity Building & Remodeling is a full-service remodeling company with many satisfied customer's from ALL disciplines of remodeling. We are committed to operating our business based on integrity, honesty and fairness. We pride ourselves in getting things done 'the right way' and not cutting corners. We are able to help take you from the 'dreaming about it' stage to the 'reality' stage.

"Excellent. Bob was very reliable, skilled, and attentive to detail and a very pleasant man. I selected and purchased the floor tile, vanity, sink, light fixture, and bathroom fixtures and he installed everything flawlessly. He even disposed of the old stuff. He bought the paint and painted the walls and ceiling. I was very happy with the outcome."

Steve K on February 2021

Integrity Building & Remodeling is a full-service remodeling company with many satisfied customer's from ALL disciplines of remodeling. We are committed to operating our business based on integrity, honesty and fairness. We pride ourselves in getting things done 'the right way' and not cutting corners. We are able to help take you from the 'dreaming about it' stage to the 'reality' stage.

"Excellent. Bob was very reliable, skilled, and attentive to detail and a very pleasant man. I selected and purchased the floor tile, vanity, sink, light fixture, and bathroom fixtures and he installed everything flawlessly. He even disposed of the old stuff. He bought the paint and painted the walls and ceiling. I was very happy with the outcome."

Steve K on February 2021

RESTORx

4497 S Park Road
No reviews yet

RESTORx

4497 S Park Road
No reviews yet
46 years of experience

Contact us at (815) 599-1332 in Freeport, IL, to learn more about damage restoration.

Contact us at (815) 599-1332 in Freeport, IL, to learn more about damage restoration.

Moldlab

2501 Mayes Road
4.66(
401
)

Moldlab

2501 Mayes Road
4.66(
401
)
Customers say: True professional
25 years of experience

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018

Global Plasma Solutions

10 Mall Terrace
5.00(
1
)

Global Plasma Solutions

10 Mall Terrace
5.00(
1
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

VSI Radon Reduction Corp.

27900 W Concrete Dr
4.85(
82
)

VSI Radon Reduction Corp.

27900 W Concrete Dr
4.85(
82
)
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

VSI Radon Reduction Corp. has two locations to serve the greater Chicagoland and Rockford area. Providing radon reduction since 1987. State licensed installer at every job. We install and service sump pumps and backup pumps as well.

"Great service!"

Norman C on March 2025

VSI Radon Reduction Corp. has two locations to serve the greater Chicagoland and Rockford area. Providing radon reduction since 1987. State licensed installer at every job. We install and service sump pumps and backup pumps as well.

"Great service!"

Norman C on March 2025

Showing 1-10 of 47
FAQs for radon gas testing projects in Cortland, IL

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 Cortland, IL homeowners’ guide to radon gas testings

From average costs to expert advice, get all the answers you need to get your job done.

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