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Verified Reviews for Radon Detection And Reduction pros in Delano, CA

*The Angi rating for Radon Detection And Reduction companies in Delano, CA 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 Delano, CA 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 January 17, 2026

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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 Indoor-Environmental Services of Shafter

Indoor-Environmental Services of Shafter

No reviews yet

Indoor-Environmental Services of Shafter

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Free onsite estimate

Indoor-Environmental Services of Shafter is the premier provider of environmental services in Central California. Our main focuses are mold inspection, testing, and remediation, as well as the testing and abatement of other hazardous substances that may be existing in your home or office building. Indoor-Environmental Services offers the best prices available, and are the only company in the industry that provides a 10-year warranty upon the completion of any mold remediation project. Mold inspections can prove to be beneficial whether there is visible mold growth or if a test is performed prior to purchasing a home. Indoor fungal contaminants have proven to be capable of affecting the structural integrity of your property as well as the respiratory health of your family or employees. If you have questions regarding mold and its affect on your health, go to our website and click on the "Mold and Your Health" section.

Indoor-Environmental Services of Shafter is the premier provider of environmental services in Central California. Our main focuses are mold inspection, testing, and remediation, as well as the testing and abatement of other hazardous substances that may be existing in your home or office building. Indoor-Environmental Services offers the best prices available, and are the only company in the industry that provides a 10-year warranty upon the completion of any mold remediation project. Mold inspections can prove to be beneficial whether there is visible mold growth or if a test is performed prior to purchasing a home. Indoor fungal contaminants have proven to be capable of affecting the structural integrity of your property as well as the respiratory health of your family or employees. If you have questions regarding mold and its affect on your health, go to our website and click on the "Mold and Your Health" section.

Radon Detection and Reduction questions, answered by experts

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

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

Through air sampling devices and surface swabs in key areas of concern.

Properties should ideally be tested for radon every 2 to 5 years or sooner when changes to the property structure or ventilation occur that might impact airflow.

The short answer is no, air purifiers do not help with radon. While they certainly can improve the air quality of your home, they only clean pollutants from the air. Radon is radioactive, and it isn’t affected by the same filtration systems that handle other airborne particles, like dust and mold. The only thing that works is a radon mitigation system.

The Delano, CA homeowners’ guide to radon detection and reduction services

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