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Verified Reviews for Radon Detection And Reduction pros in Sumas, WA

*The Angi rating for Radon Detection And Reduction companies in Sumas, WA 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 Sumas, WA 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 November 16, 2025

Find Radon detection and reduction specialists in Sumas

Avatar for Absolute Asbestos Services

Absolute Asbestos Services

5.00(
5
)
•Approved Pro

Absolute Asbestos Services

5.00(
5
)
•Approved Pro
Customers say: Quick response
5 years of experience
Free onsite estimate

At Absolute Asbestos Services, we are dedicated to providing top-notch asbestos inspection, testing, and removal services. Our team of Washington State accredited inspectors ensures that every project is handled with the utmost care and compliance with all regulatory standards. We offer comprehensive services including mold remediation, lead renovation, Asbestos testing and Abatement. Our commitment to safety, customer satisfaction, and excellence sets us apart as a trusted partner in maintaining a safe and healthy environment for our clients. We understand the importance of addressing hazardous materials promptly and efficiently, which is why we use state-of-the-art equipment and techniques to ensure the highest level of safety and effectiveness. Our experienced team is trained to handle even the most complex projects, providing peace of mind to our clients. At Absolute Asbestos Services, we believe in building long-term relationships with our clients based on trust, reliability, and exceptional service. Choose us for your asbestos and environmental needs, and experience the difference that our expertise and dedication can make.

"I recently had the pleasure of working with Absolute Asbestos for asbestos removal in my home, and I couldn't be more pleased with their service. From the first call to the final cleanup, the team was professional, knowledgeable, and attentive to detail. They took the time to explain the process to me, ensuring I understood what to expect every step of the way. I really appreciated their thoroughness and commitment to a clean and safe environment through what proved to be a very large and challenging project. The communication throughout the project was excellent, and any questions or concerns I had were addressed quickly. The owner went above and beyond through every step of the process, even providing me with additional information and resources for other areas of need on my project. I highly recommend Absolute Asbestos to anyone in need of asbestos abatement services. Their personalized, friendly service and dedication to customer satisfaction truly set them apart!"

Sky S on March 2025

At Absolute Asbestos Services, we are dedicated to providing top-notch asbestos inspection, testing, and removal services. Our team of Washington State accredited inspectors ensures that every project is handled with the utmost care and compliance with all regulatory standards. We offer comprehensive services including mold remediation, lead renovation, Asbestos testing and Abatement. Our commitment to safety, customer satisfaction, and excellence sets us apart as a trusted partner in maintaining a safe and healthy environment for our clients. We understand the importance of addressing hazardous materials promptly and efficiently, which is why we use state-of-the-art equipment and techniques to ensure the highest level of safety and effectiveness. Our experienced team is trained to handle even the most complex projects, providing peace of mind to our clients. At Absolute Asbestos Services, we believe in building long-term relationships with our clients based on trust, reliability, and exceptional service. Choose us for your asbestos and environmental needs, and experience the difference that our expertise and dedication can make.

"I recently had the pleasure of working with Absolute Asbestos for asbestos removal in my home, and I couldn't be more pleased with their service. From the first call to the final cleanup, the team was professional, knowledgeable, and attentive to detail. They took the time to explain the process to me, ensuring I understood what to expect every step of the way. I really appreciated their thoroughness and commitment to a clean and safe environment through what proved to be a very large and challenging project. The communication throughout the project was excellent, and any questions or concerns I had were addressed quickly. The owner went above and beyond through every step of the process, even providing me with additional information and resources for other areas of need on my project. I highly recommend Absolute Asbestos to anyone in need of asbestos abatement services. Their personalized, friendly service and dedication to customer satisfaction truly set them apart!"

Sky S on March 2025

Cascade Radon Inc

4.94(
157
)

Cascade Radon Inc

4.94(
157
)
Customers say: Super punctual
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers

The Northwest's most experienced firm. Residential and commercial radon testing, mitigation, and system design for homes, schools, businesses. Radon-resistant design for new homes. We have been EPA-certified for over 25 years. Award winning. Radon is not a secondary endeavor for us… it’s all we do.

"Excellent from beginning to end. Very professional outfit from initial visit, quote, scheduling, work, followup. Price was reasonable, work quality went above and beyond, and radon levels dropped well below even the contractual level."

Claude S on April 2021

The Northwest's most experienced firm. Residential and commercial radon testing, mitigation, and system design for homes, schools, businesses. Radon-resistant design for new homes. We have been EPA-certified for over 25 years. Award winning. Radon is not a secondary endeavor for us… it’s all we do.

"Excellent from beginning to end. Very professional outfit from initial visit, quote, scheduling, work, followup. Price was reasonable, work quality went above and beyond, and radon levels dropped well below even the contractual level."

Claude S on April 2021

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

Radon Detection and Reduction questions, answered by experts

Avoid opening windows and keep doors closed during testing to obtain accurate readings.

Costs depend on property size, test types, and additional services like mold sampling.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

A DIY kit can lessen the sting that comes with paying for a professional assessment, but these comprehensive tests are true lifesavers. Inspectors are more likely to catch all of the pollutants and hazards in your air. Plus, you’ll still need a professional to verify and act on your DIY test results. 

Some kits don’t include tests for certain air pollutants or only detect their presence, but not their levels (i.e., mold spores). If you’re willing to shell out money for a DIY kit, it’s usually better to stretch your budget slightly higher for a more detailed assessment.

Costs for radon detection services typically range from $150 to $250, depending on the testing method and whether a professional assessment is required.

The Sumas, WA 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.

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