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

*The Angi rating for Radon Detection And Reduction companies in Carlsbad, 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 Carlsbad, 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 July 29, 2026

Top-Rated Radon detection and reduction specialists in Carlsbad - Updated Nov 2026

Pacific Environmental & Abatement Solutions Inc
4.6(
10
)
Radon Gas - AbatementRadon Gas - Testing

Serving Carlsbad, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"The tester was well versed in this area even showing the areas that were high in moisture. Very friendly and informative as well as professional. Made me comfortable with the experience she had. When the owner and maintenance worker failed she made me comfortable. Fae who had the credentials as well experience explained everything in detail. Definitely use Fae!!!"
1 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for San Diego Abatement Services
San Diego Abatement Services
4.5(
41
)
Radon Gas - AbatementRadon Gas - Testing

Serving Carlsbad, CA and surrounding areas

Approved

In business since 1985

Emergency services offered

Warranties offered

"Professional, prompt, courteous, completed in one day. Responsive to emails and all questions. Left no mess."
Exterior Painting
Before - Acoustic Ceiling
After - Scraped & Textured
Asbestos Removal
Lead Removal Services

+2

Response time2 days
Response rate100%
2 neighbors recently requested a quote
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Avatar for All Phases And Sons Restoration INC.
All Phases And Sons Restoration INC.
5.0(
14
)
Radon Gas - Testing

Serving Carlsbad, CA and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Job went very well. All Phases & Sons responded immediately, corrected issues very promptly and in a very professional manner. Marcus and his sons are very knowledgeable in the water damage mitigation and restoration industry and very well respected in the industry. As a retired insurance adjuster, I would not hesitate to contact All Phases for any water mitigation, restoration or plumbing needs."
Additional Photos
We have top of the line industrial equipment and the highest quality service.
Manager - Charlie Mestaz
Owner - Mark Mestaz
Rosemary Mestaz Administration

+6

Recommended by92%of homeowners
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Avatar for KCS Restorations Inc
KCS Restorations Inc
4.7(
33
)
Radon Gas - Testing

Serving Carlsbad, CA and surrounding areas

In business since 2004

Free estimates

"The work that Dave’s company performed was great with the exception of the living room, that ended up being mid-matched. Dave’s crew let me know that because of this they would paint the whole living room. They asked me to call and set up an appointment and I did. The day came and nobody showed up. I called Denise and she stated her crew called in sick and they were leaving town the next day. She would have Dave call me. He didn’t, so I txt him the following week and he called and said it would be more money, which it shouldn’t as I was previously told they mid-matched it so they would make it right. He was supposed to call later in the week and never did. I find though everyone was nice, the professionalism was lacking. I would not use again because of this."
Recommended by96%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

No, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.

The Carlsbad, CA 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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