
Get matched with top radon detection and reduction specialists in Sequim, WA
Enter your ZIP and get matched with up to 5 pros
Need a pro for your radon detection and reduction project in Sequim, WA?
Verified Reviews for Radon Detection And Reduction pros in Sequim, WA
*The Angi rating for Radon Detection And Reduction companies in Sequim, 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 Sequim, 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 October 30, 2025
Find Radon detection and reduction specialists in Sequim
Cascade Radon Inc
Cascade Radon Inc
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

Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
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
The Sequim, 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.
•Discover the average indoor air quality testing cost, what impacts pricing, and how to budget for healthier air in your home.
•Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.

Radon is a radioactive gas that can enter a home from the ground. Prepare yourself for mitigation by answering these questions before hiring a pro.

You need to protect your home from radon, but what does a radon mitigation system look like? Check out this radon mitigation system diagram to learn how it works.

How long does a radon mitigation system last? A properly installed and maintained system can last 20 years or more, but various issues can reduce the life span.
•Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
- Carlsborg, WA Radon detection and reduction specialists
- Port Townsend, WA Radon detection and reduction specialists
- Chimacum, WA Radon detection and reduction specialists
- Port Hadlock, WA Radon detection and reduction specialists
- Quilcene, WA Radon detection and reduction specialists
- Port Ludlow, WA Radon detection and reduction specialists
- Coupeville, WA Radon detection and reduction specialists
- Clinton, WA Radon detection and reduction specialists
- Oak Harbor, WA Radon detection and reduction specialists
- Hansville, WA Radon detection and reduction specialists
- Brinnon, WA Radon detection and reduction specialists
- Port Gamble, WA Radon detection and reduction specialists
- Langley, WA Radon detection and reduction specialists
- Camano Island, WA Radon detection and reduction specialists
- Stanwood, WA Radon detection and reduction specialists
- Poulsbo, WA Radon detection and reduction specialists
- Kingston, WA Radon detection and reduction specialists
- Silverdale, WA Radon detection and reduction specialists
- Freeland, WA Radon detection and reduction specialists
- Seabeck, WA Radon detection and reduction specialists
- Keyport, WA Radon detection and reduction specialists
- Indianola, WA Radon detection and reduction specialists
- Suquamish, WA Radon detection and reduction specialists
- La Conner, WA Radon detection and reduction specialists
- Anacortes, WA Radon detection and reduction specialists
- Lilliwaup, WA Radon detection and reduction specialists
- Tracyton, WA Radon detection and reduction specialists
- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"


