Top-rated radon gas abatement pros.

Get matched with top radon gas abatement pros in Longview, WA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Radon gas abatement pros in Longview

Really Fast Rapid Radon Remediation

4120 NE Burtonwod Ct
4.68(
30
)
•Approved Pro

Really Fast Rapid Radon Remediation

4120 NE Burtonwod Ct
4.68(
30
)
•Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
15 years of experience

The goal of mitigation is to reduce the radon levels in your home to a non-dangerous level. It is virtually impossible to remove all traces of radon. Radon gas is everywhere, including outside. The key is to reduce the levels you breathe in your home to a level that is safe. We use only the best equipment to help provide you with the best radon testing, mold testing and mitigations service. Call us today!

"They were not satisfied until my radon levels were pretty much annihilated! Very clean install, came back to measure levels, were still a little higher than expected, so came and dug deeper and put in a different fan and that did the trick! Very reasonable pricing and great communication."

Jeramy S on April 2024

The goal of mitigation is to reduce the radon levels in your home to a non-dangerous level. It is virtually impossible to remove all traces of radon. Radon gas is everywhere, including outside. The key is to reduce the levels you breathe in your home to a level that is safe. We use only the best equipment to help provide you with the best radon testing, mold testing and mitigations service. Call us today!

"They were not satisfied until my radon levels were pretty much annihilated! Very clean install, came back to measure levels, were still a little higher than expected, so came and dug deeper and put in a different fan and that did the trick! Very reasonable pricing and great communication."

Jeramy S on April 2024

Kelsay Environmental Building Consulting

Located At
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Kelsay Environmental Building Consulting

Located At
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
143 local quotes requested
13 years of experience

Welcome to Kelsay Environmental Building Consulting! We look forward to serving you!

Welcome to Kelsay Environmental Building Consulting! We look forward to serving you!

Avatar for Alpha Environmental Services Inc

Alpha Environmental Services Inc

11080 SW Allen Blvd
4.70(
116
)
•Approved Pro

Alpha Environmental Services Inc

11080 SW Allen Blvd
4.70(
116
)
•Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
466 local quotes requested

We are a residential and commercial environmental consulting and remediation company. Serving the greater Portland, OR, area for over 20 years, we have the experience and knowledge to handle just about anything. We offer a variety of services from mold assessment and remediation to radon testing and mitigation and tank services. We provide project oversight and technical review for projects big and small. This includes site analysis, mold assessment, and the remediation of toxins. We also offer a full range of heating oil tank services, from checking underground leaks to installing above ground storage tanks (ASTs). Our residential and commercial services include: • Environmental consulting and remediation • Environmental site assessment • Groundwater remediation • Habitat restoration • Mold testing and removal • Asbestos, radon and lead testing and inspection • Dry well sampling • Phase I & II environmental site assessments • Underground tank sampling • Vapor mitigation systems Environmental risk is an important and complex issue. Whether your concern is toxic mold or radon testing, Alpha Environmental Services can develop an environmental or engineering due-diligence solution that fits your individual needs. We are fully licensed and committed to your environmental needs. Call today for a free estimate and to schedule an appointment.

"I hired Alpha Environmental to do a tank search. They were punctual and helpful, beyond the scope of their visit. They're easy to work with and they accommodated unusual invoicing request."

Ramona M on June 2025

We are a residential and commercial environmental consulting and remediation company. Serving the greater Portland, OR, area for over 20 years, we have the experience and knowledge to handle just about anything. We offer a variety of services from mold assessment and remediation to radon testing and mitigation and tank services. We provide project oversight and technical review for projects big and small. This includes site analysis, mold assessment, and the remediation of toxins. We also offer a full range of heating oil tank services, from checking underground leaks to installing above ground storage tanks (ASTs). Our residential and commercial services include: • Environmental consulting and remediation • Environmental site assessment • Groundwater remediation • Habitat restoration • Mold testing and removal • Asbestos, radon and lead testing and inspection • Dry well sampling • Phase I & II environmental site assessments • Underground tank sampling • Vapor mitigation systems Environmental risk is an important and complex issue. Whether your concern is toxic mold or radon testing, Alpha Environmental Services can develop an environmental or engineering due-diligence solution that fits your individual needs. We are fully licensed and committed to your environmental needs. Call today for a free estimate and to schedule an appointment.

"I hired Alpha Environmental to do a tank search. They were punctual and helpful, beyond the scope of their visit. They're easy to work with and they accommodated unusual invoicing request."

Ramona M on June 2025

Cascade Radon Inc

12839 NE Airport Way
4.94(
157
)

Cascade Radon Inc

12839 NE Airport Way
4.94(
157
)
Customers say: Super punctual
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers

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

Avatar for L & L Design & Remodeling Inc.

L & L Design & Remodeling Inc.

2806 NE 65th Ave
3.33(
9
)

L & L Design & Remodeling Inc.

2806 NE 65th Ave
3.33(
9
)
Customers say: Super punctual
18 years of experience

General contractor specializing in home improvement such as weatherization, remodeling and the installation of home improvement products that are green friendly that increase market vaue and energy effiency. Our energy efficient products that we install are windows, roofs, solar vents, attic, wall, floor insulation and E-Shield radiant barrier. Other home improvement products and services that we install are countertops, cabinets, flooring, siding, roofs, gutters, exterior and interior painting, roof coating, window tinting and bathroom and kitchen remodeling. We strive to be up to date with the latest energy efficient products and home improvement products. We also specialize in removing asbestos siding and lead abatement. We are an A rated company with the Better Business Bureau doing 300 projects a year.Same as cash financing available and low interest installment financing. Additional DBAs - L and L Design and Remodel, L and L Design and Remodeling Inc, L & L Design & Remodel. Additional phones - (360) 694-7333, (877)535-7333, Fax number (360)735-5926 .

General contractor specializing in home improvement such as weatherization, remodeling and the installation of home improvement products that are green friendly that increase market vaue and energy effiency. Our energy efficient products that we install are windows, roofs, solar vents, attic, wall, floor insulation and E-Shield radiant barrier. Other home improvement products and services that we install are countertops, cabinets, flooring, siding, roofs, gutters, exterior and interior painting, roof coating, window tinting and bathroom and kitchen remodeling. We strive to be up to date with the latest energy efficient products and home improvement products. We also specialize in removing asbestos siding and lead abatement. We are an A rated company with the Better Business Bureau doing 300 projects a year.Same as cash financing available and low interest installment financing. Additional DBAs - L and L Design and Remodel, L and L Design and Remodeling Inc, L & L Design & Remodel. Additional phones - (360) 694-7333, (877)535-7333, Fax number (360)735-5926 .

Global Plasma Solutions

10 Mall Terrace
5.00(
1
)

Global Plasma Solutions

10 Mall Terrace
5.00(
1
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Avatar for Willamette Restoration Services, Inc.

Willamette Restoration Services, Inc.

PO Box 2679
5.00(
20
)

Willamette Restoration Services, Inc.

PO Box 2679
5.00(
20
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

At Willamette Restoration Services, Inc., we've built our company's solid reputation on traditional values of honesty, dependability, and affordability. We understand the confusion many of our clients are experiencing when they contact us for assistance with their fire restoration and water damage restoration needs. That's why we'll go the extra mile to explain each step of the process to you and answer any questions you may have. For storm damage, fire & smoke restoration, water & flood damage restoration, home remodeling and room additions, call Willamette Restoration Services in Portland at (971) 252-3003 to speak to a friendly professional today!

"My crawl space was flooded due to a hot water leak, major moisture damage and unfortunately I did not know about Willamette restoration and used another company to dry out crawl space but walls in laundry room and entry had to be tore down and that's when Willamette Restoration came into picture and saved the day. They completed the finish work walls, flooring, countertop, painting, replacing cabinets and I cannot say enough about their professionalism, timely manner in getting the job done. They went above and beyond my expectations and their cost was far less than a quote by another company. If you want excellent workmanship Willamette Restoration should be your company of choice."

Connie S on December 2022

At Willamette Restoration Services, Inc., we've built our company's solid reputation on traditional values of honesty, dependability, and affordability. We understand the confusion many of our clients are experiencing when they contact us for assistance with their fire restoration and water damage restoration needs. That's why we'll go the extra mile to explain each step of the process to you and answer any questions you may have. For storm damage, fire & smoke restoration, water & flood damage restoration, home remodeling and room additions, call Willamette Restoration Services in Portland at (971) 252-3003 to speak to a friendly professional today!

"My crawl space was flooded due to a hot water leak, major moisture damage and unfortunately I did not know about Willamette restoration and used another company to dry out crawl space but walls in laundry room and entry had to be tore down and that's when Willamette Restoration came into picture and saved the day. They completed the finish work walls, flooring, countertop, painting, replacing cabinets and I cannot say enough about their professionalism, timely manner in getting the job done. They went above and beyond my expectations and their cost was far less than a quote by another company. If you want excellent workmanship Willamette Restoration should be your company of choice."

Connie S on December 2022

IRS ENVIRONMENTAL OF PORTLAND INC

777 SW ARMCO AVE
4.68(
37
)

IRS ENVIRONMENTAL OF PORTLAND INC

777 SW ARMCO AVE
4.68(
37
)
Customers say: Quality work
41 years of experience

USES SUBS FOR MISC. COST IS DETERMINED BY THE JOB. TRAVEL CHARGES APPLY IF OVER 5O MILES & WE DO THE WORK. LICENSE #: CCB 155646 & DEQ #: FSC 525.

"I have heard this company used to be a very solid company for a long time. Apparently things have gone downhill. After I sent the information they needed to obtain a permit for the asbestos removal, I asked to schedule a date to have the work done. I received no reply. Six days later, I sent a followup message, asking if we could schedule a date. Again no reply. I was therefore very surprised to receive a call a few days later, that the workers were already at my condo, on a day when I was out of town, and they couldn't do the work, because there was furniture still in the rooms. Maybe I should have known that I needed to remove the furniture, but I was never told this, either on the phone or in the quote they sent. And in any case, I had no way of knowing what day they were coming, since they didn't reply to my messages. I was given a choice: either they not do the work, and I pay for the workers' wasted travel time (my condo was a 3-hour round trip from their office), or I pay them $450 to move the furniture. No explanation why it would cost $450 to move the furniture from two small bedrooms into an adjacent room, but I basically had no choice. Afterwards, I explained that it was not fair for them to charge me for this furniture removal, when it was their own fault: they never told me the furniture needed to be removed, or even when they were coming. Their response? Pay up. The work itself seems to have been completed well. My issues are with the lack of communication, the surly tone of the office staff, and the extortive practices."

Clancy R on October 2019

USES SUBS FOR MISC. COST IS DETERMINED BY THE JOB. TRAVEL CHARGES APPLY IF OVER 5O MILES & WE DO THE WORK. LICENSE #: CCB 155646 & DEQ #: FSC 525.

"I have heard this company used to be a very solid company for a long time. Apparently things have gone downhill. After I sent the information they needed to obtain a permit for the asbestos removal, I asked to schedule a date to have the work done. I received no reply. Six days later, I sent a followup message, asking if we could schedule a date. Again no reply. I was therefore very surprised to receive a call a few days later, that the workers were already at my condo, on a day when I was out of town, and they couldn't do the work, because there was furniture still in the rooms. Maybe I should have known that I needed to remove the furniture, but I was never told this, either on the phone or in the quote they sent. And in any case, I had no way of knowing what day they were coming, since they didn't reply to my messages. I was given a choice: either they not do the work, and I pay for the workers' wasted travel time (my condo was a 3-hour round trip from their office), or I pay them $450 to move the furniture. No explanation why it would cost $450 to move the furniture from two small bedrooms into an adjacent room, but I basically had no choice. Afterwards, I explained that it was not fair for them to charge me for this furniture removal, when it was their own fault: they never told me the furniture needed to be removed, or even when they were coming. Their response? Pay up. The work itself seems to have been completed well. My issues are with the lack of communication, the surly tone of the office staff, and the extortive practices."

Clancy R on October 2019

Pure Environmental

No reviews yet

Pure Environmental

No reviews yet
Avatar for Upper Left Services

Upper Left Services

12000 NE 95th St Ste 520
5.00(
8
)

Upper Left Services

12000 NE 95th St Ste 520
5.00(
8
)
Customers say: Quick response
6 years of experience

Upper Left Services is proud to offer Fire, Smoke, and Water Damage mitigation and repair services to Clark County WA and surrounding areas. We are a dedicated team of professionals committed to helping you restore your property and regain peace of mind in the face of unexpected damage. We understand that accidents happen, and when they do, it can be overwhelming and stressful. Whether you’re dealing with water or fire damage, mold growth, or any other form of property damage, we are here to provide efficient and effective solutions. Our team of experts is highly trained and experienced in all aspects of mitigation and repair. We utilize state-of-the-art equipment and techniques to assess the extent of damage and develop a customized plan to restore your property to pre-loss condition. We work diligently to minimize further damage and ensure a swift and thorough restoration process. Customer satisfaction is out top priority. We strive to provide exceptional services from the moment you contact us until the completion of the project. Our friendly and knowledgeable staff will guide you through every step of the process, answering any questions you may have and addressing any concerns. We understand that each situation is unique, and we approach every project with the utmost care and attention to detail. We believe in open communication, keeping you informed throughout the entire restoration process. When you choose Upper Left Services for your mitigation and repair services, you can have peace of mind knowing that you are working with a trusted and knowledgeable team. We take great pride in our work and are dedicated to delivering results that meet or exceed your expectations. Don’t let property damage disrupt your life. Contact us today and let us handle the mitigation and repair process for you. We are here to restore your property and your peace of mind. We work with all insurance companies and call bill directly on your behalf.

"I can't say enough about how great Upper Left is - I highly recommend them. We reached out to Upper Left based on a co-worker's recommendation after a mistake in an HVAC install on our second floor caused water damage to the second story and first floor just below it. They came out quick, devised a plan and got the dry-out going. They were here daily to follow up and their communication with both me and my insurance agent was amazing. Their work and professionalism is exceptional, but more importantly you could tell they really wanted the best outcome for me and my family."

Kori W on October 2024

Upper Left Services is proud to offer Fire, Smoke, and Water Damage mitigation and repair services to Clark County WA and surrounding areas. We are a dedicated team of professionals committed to helping you restore your property and regain peace of mind in the face of unexpected damage. We understand that accidents happen, and when they do, it can be overwhelming and stressful. Whether you’re dealing with water or fire damage, mold growth, or any other form of property damage, we are here to provide efficient and effective solutions. Our team of experts is highly trained and experienced in all aspects of mitigation and repair. We utilize state-of-the-art equipment and techniques to assess the extent of damage and develop a customized plan to restore your property to pre-loss condition. We work diligently to minimize further damage and ensure a swift and thorough restoration process. Customer satisfaction is out top priority. We strive to provide exceptional services from the moment you contact us until the completion of the project. Our friendly and knowledgeable staff will guide you through every step of the process, answering any questions you may have and addressing any concerns. We understand that each situation is unique, and we approach every project with the utmost care and attention to detail. We believe in open communication, keeping you informed throughout the entire restoration process. When you choose Upper Left Services for your mitigation and repair services, you can have peace of mind knowing that you are working with a trusted and knowledgeable team. We take great pride in our work and are dedicated to delivering results that meet or exceed your expectations. Don’t let property damage disrupt your life. Contact us today and let us handle the mitigation and repair process for you. We are here to restore your property and your peace of mind. We work with all insurance companies and call bill directly on your behalf.

"I can't say enough about how great Upper Left is - I highly recommend them. We reached out to Upper Left based on a co-worker's recommendation after a mistake in an HVAC install on our second floor caused water damage to the second story and first floor just below it. They came out quick, devised a plan and got the dry-out going. They were here daily to follow up and their communication with both me and my insurance agent was amazing. Their work and professionalism is exceptional, but more importantly you could tell they really wanted the best outcome for me and my family."

Kori W on October 2024

...
Showing 1-10 of 134
FAQs for radon gas abatement projects in Longview, WA

The only way to know whether your home or water supply contains radon is to schedule a professional test. A qualified radon inspector will collect samples, deliver lab-verified results, and explain the findings for $150 to $800. Once you know your exact levels, you and your radon mitigation pro can choose the right system and tackle the problem before it affects your family’s health.

Both roles tackle radon, but they focus on different steps. Inspectors test your home, interpret the results, and determine whether levels exceed EPA guidelines. Mitigation pros design and install the system that lowers those levels. Some companies do both, but the skills and equipment differ, so always verify that the person you hire is properly certified for the specific service you need.

Installing a mitigation unit fixes radon problems by reducing indoor gas levels to established safe standards. A system designed and installed by a mitigation expert, tailored to your home's specific layout and foundation, guarantees effective radon reduction. This expert installation ensures consistent performance over time while safeguarding your indoor air quality.

Open windows and doors do not reduce radon levels because they trigger a pressure imbalance that draws radon-laden air into your home. This practice fails to control radon concentration and can even worsen the issue. An active suction mitigation system provides a proven, safe, and effective solution to reliably reduce radon levels.

Radon mitigation systems generally last between 10 and 30 years, depending on system type and maintenance. Passive systems endure the longest because they have no moving parts, whereas active systems, which use a fan, require fan replacement every 5 to 10 years. System components, such as PVC pipes, seals, and fittings, can remain effective for decades when paired with periodic inspections and proper maintenance.

Radon mitigation systems consume between 300 and 3,000 kWh of electricity per year, depending on fan size and system design. On average, an active radon fan draws 100 to 300 watts continuously, which translates to roughly 876 kWh annually, and adds $30 to $300 to your energy bill each year. Choosing a high-efficiency fan and ensuring tight sealing around pipes helps minimize these ongoing costs.

The Longview, WA homeowners’ guide to radon gas abatements

From average costs to expert advice, get all the answers you need to get your job done.

See all articles