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

*The Angi rating for Radon Detection And Reduction companies in Clearlake, 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 Clearlake, 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 December 25, 2025

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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 Heartland Environmental Services

Heartland Environmental Services

No reviews yet

Heartland Environmental Services

No reviews yet
Free onsite estimate

Heartland Environmental Services serves the entire Tulare area with the best environmental services available. We are a multi-functional inspection, remediation and restoration company that offers the best service at competitive prices. Any form of environmental damage you have experienced on your property, whether residential or commercial, is our specialty; from mold damage to stagnant water, fire and smoke, or any other harmful substances or environmental factors. Our website offers more information on the services we offer, as well as information on the negative affects of mold and other environmental hazards. You can also contact a customer service representative Monday through Friday, 8am to 5pm, who can answer any specific questions you may have, as well as schedule an appointment with one of our technicians.

Heartland Environmental Services serves the entire Tulare area with the best environmental services available. We are a multi-functional inspection, remediation and restoration company that offers the best service at competitive prices. Any form of environmental damage you have experienced on your property, whether residential or commercial, is our specialty; from mold damage to stagnant water, fire and smoke, or any other harmful substances or environmental factors. Our website offers more information on the services we offer, as well as information on the negative affects of mold and other environmental hazards. You can also contact a customer service representative Monday through Friday, 8am to 5pm, who can answer any specific questions you may have, as well as schedule an appointment with one of our technicians.

Radon Detection and Reduction questions, answered by experts

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

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.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

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.

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 Clearlake, CA homeowners’ guide to radon detection and reduction services

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