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

*The Angi rating for Radon Detection And Reduction companies in Seatac, 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 Seatac, 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 June 12, 2025

Find Radon detection and reduction specialists in Seatac

Avatar for 5 Microns Inc.
5 Microns Inc.
4.9(
74
)
Radon Gas - Testing

Serving Seatac, WA and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"Pascal was very prompt in communication and coordinating the testing. The results were provided next day and he answered all my questions. I recommend 5 Microns Inc and will use their services in the future."
Vinyl sheeting asbestos test
Wall asbestos test
Asbestos air test
Mold and moisture testing
Mold air test

+32

Response time3 hrs
Response rate98%
Recommended by100%of homeowners
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Avatar for The Home Private Investigator/Home P.I., LLC
The Home Private Investigator/Home P.I., LLC
4.7(
60
)
Radon Gas - Testing

Serving Seatac, WA and surrounding areas

Approved

In business since 2005

Emergency services offered

Credit card accepted

"A very good service by a very good guy. He was available to answer questions and exceeded my expectations. Highly recommend."
OUR WORK
OUR WORK
OUR WORK
Response time3 hrs
Recommended by94%of homeowners
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Avatar for BranDan Home Solutions
BranDan Home Solutions
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving Seatac, WA and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

"BranDan did a careful job with good attention to details. I will contact them again when needed in the future."
BranDan Home Solutions
7 neighbors recently requested a quote
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Avatar for Edgeline Restoration
Edgeline Restoration
4.9(
12
)
Radon Gas - Testing

Serving Seatac, WA and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"Great, Colby did a great job and helped me understand the whole pricess as well as the insurance side so i was fully i formed the entire time"
Additional Photos
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Additional Photos

+23

Response time4 hrs
Response rate100%
2 neighbors recently requested a quote
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Palm Construction and Remodeling Inc.
4.2(
88
)
Radon Gas - AbatementRadon Gas - Testing

Serving Seatac, WA and surrounding areas

In business since 2020

Free estimates

Offers commercial services

"My good friend recommended me Palm Construction on my roof replacement. I also contacted some other recommended roofing contractors and offer from Palm Construction was very acceptable. Lee and his crew started roof replacement soon after we signed a contract. Lee was very professional, honest and helpful. His crew kept working area clean as possible and they finished my roof quick and on time. The roof passed inspection and it looks great. I would highly recommend Palm Construction!"
Response time2 days
Recommended by90%of homeowners
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Avatar for Diversified Crawlspace Services
Diversified Crawlspace Services
4.5(
13
)
Radon Gas - AbatementRadon Gas - Testing

Serving Seatac, WA and surrounding areas

"RatSlab specializes in offering Crawl Space, Rat & Rodent Removal Services that are cost-effective, reliable and efficient in controlling premises area from rats and mice."
Additional Photos
Additional Photos
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Additional Photos

+61

Recommended by84%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
1.8(
4
)
Radon Gas - Abatement

Serving Seatac, WA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

SWAT Environmental is the nation's largest radon abatement engineer. Our experienced staff has corrected radon problems for over 60,000 customers since 1988 with 100% success!

Recommended by50%of homeowners
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Showing 1-10 of 13
Radon Detection and Reduction questions, answered by experts

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

The average radon mitigation system uses about 876 kWh of electricity per year, although the exact amount of electricity used will vary depending on the size of the radon fan. Once the system is installed, the annual increase to your energy bill could range from $30 to $300 per year, again depending on the size of the fan.

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.

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

The Seatac, 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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