Top-rated radon detection and reduction specialists.

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There are 3 highly-rated local radon detection and reduction specialists.

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Radon detection and reduction specialists in Amherst

ENVIROTEST LABORATORY INC

375 Westfield St
4.65(
184
)
Approved Pro

ENVIROTEST LABORATORY INC

375 Westfield St
4.65(
184
)
Approved Pro
Customers say: Terrific value
34 years of experience
Free onsite estimate

Our company started in 1991, with a focus on building hazards such as Mold Testing, Mold Inspection, Air Quality and Sick Building Syndrome. Envirotest then naturally progressed to focus on Asbestos, Radon and Lead Paint testing. Our mold expert is Samuel N. Cohen, he has over 25 years experience in the Environmental Science field, has intimate knowledge of Construction Codes, and can determine air quality problems quickly and then recommend many cost effective ways to solve your air quality problem. He is an innovator in the Mold field who was one of the first mold testing consultants to successfully utilize thermal imaging in this field. We are dedicated to serving our customer's needs, and our goal is 100% customer satisfaction. We strive to bring you the best in quality service. If something isn't right, please let us know.

"All good. Technicians are polite and deliver promises"

John B on February 2021

Our company started in 1991, with a focus on building hazards such as Mold Testing, Mold Inspection, Air Quality and Sick Building Syndrome. Envirotest then naturally progressed to focus on Asbestos, Radon and Lead Paint testing. Our mold expert is Samuel N. Cohen, he has over 25 years experience in the Environmental Science field, has intimate knowledge of Construction Codes, and can determine air quality problems quickly and then recommend many cost effective ways to solve your air quality problem. He is an innovator in the Mold field who was one of the first mold testing consultants to successfully utilize thermal imaging in this field. We are dedicated to serving our customer's needs, and our goal is 100% customer satisfaction. We strive to bring you the best in quality service. If something isn't right, please let us know.

"All good. Technicians are polite and deliver promises"

John B on February 2021


Avatar for Greenwave Solutions LLC

Greenwave Solutions LLC

5.00(
3
)
Approved Pro

Greenwave Solutions LLC

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
69 local quotes requested

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule a FREE estimate today! BBB accredited and A+ Rating.

"It was great! Matt:s schedule was very accommodating. He explained everything very carefully. The job was more difficult than anticipated and every detail was addressed for a fair price. Matt was very nice to work with"

Mary M on September 2025

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule a FREE estimate today! BBB accredited and A+ Rating.

"It was great! Matt:s schedule was very accommodating. He explained everything very carefully. The job was more difficult than anticipated and every detail was addressed for a fair price. Matt was very nice to work with"

Mary M on September 2025


Avatar for Mazyck's Mold Services

Mazyck's Mold Services

152 Pleasant Terrace
5.00(
2
)
Approved Pro

Mazyck's Mold Services

152 Pleasant Terrace
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
51 local quotes requested

A family-owned and operated mold remediation company with roots in Westminster, MA, we're committed to making your home healthy again. We provide expert, top-quality services, ensuring a safe and clean environment for your family.

"It went great! Clean, fast, simple. Great company and people!"

Tim M on November 2024

A family-owned and operated mold remediation company with roots in Westminster, MA, we're committed to making your home healthy again. We provide expert, top-quality services, ensuring a safe and clean environment for your family.

"It went great! Clean, fast, simple. Great company and people!"

Tim M on November 2024


Radon Systems LLC

170 Burbank Rd
4.97(
226
)
Approved Pro

Radon Systems LLC

170 Burbank Rd
4.97(
226
)
Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
71 local quotes requested

Guaranteed Results! Radon Systems LLC has installed over 20,000 successful Radon mitigation systems since 1985. Radon Systems LLC is one of the few full service Radon mitigation companies that remediate both Radon in air and Radon in water. We are state certified and fully insured. Radon Systems LLC is recognized by the National Environmental Health Association (NEHA) and the American Association of Radon Scientists and Technologists (AARST).

"Derick did a great clean job. I live in a ranch with an unfinished basement. Install took around 1 hour. Derick was punctual, professional and informative. System is doing its job!"

James P on July 2024

Guaranteed Results! Radon Systems LLC has installed over 20,000 successful Radon mitigation systems since 1985. Radon Systems LLC is one of the few full service Radon mitigation companies that remediate both Radon in air and Radon in water. We are state certified and fully insured. Radon Systems LLC is recognized by the National Environmental Health Association (NEHA) and the American Association of Radon Scientists and Technologists (AARST).

"Derick did a great clean job. I live in a ranch with an unfinished basement. Install took around 1 hour. Derick was punctual, professional and informative. System is doing its job!"

James P on July 2024


Avatar for Octagon Cleaning and Restoration

Octagon Cleaning and Restoration

232 Calef Hwy
5.00(
3
)
Approved Pro

Octagon Cleaning and Restoration

232 Calef Hwy
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 local quotes requested

Since 2002, Octagon Cleaning & Restoration has been the trusted choice for homeowners and businesses across Maine and New Hampshire. With our ACAC & IICRC Certifications and membership in the Better Business Bureau, we adhere to the highest standards in cleaning and restoration. Our experienced teams are on call 24/7, ready to protect and restore your property quickly and efficiently. We specialize in Water Damage Remediation, Mold Removal, Fire & Smoke Damage Remediation, Commercial Air Duct Cleaning, and Asbestos & Lead Removal. Octagon is here to help every step of the way. We provide thorough assessments, effective mitigation strategies, and seamless communication with your insurance providers. Our commitment to customer satisfaction is reflected in every job we do. From small home cleanups to large commercial restorations, we stand by our 5-Year Guarantee, giving you peace of mind that the job was done right. Octagon Cleaning & Restoration – Your trusted partner in keeping your property safe, clean, and healthy. Contact us today for a free estimate and experience the Octagon difference. Your peace of mind is our priority.

"I would give 10 stars if I could. Octogon did a fabulous job after a frozen pipe disaster. They really went over and above what was required. Blaine, in particular, was wonderful. The house was left in perfect readiness for the rebuild. Thank you, Blaine and Octogon!"

Bonnie P on August 2023

Since 2002, Octagon Cleaning & Restoration has been the trusted choice for homeowners and businesses across Maine and New Hampshire. With our ACAC & IICRC Certifications and membership in the Better Business Bureau, we adhere to the highest standards in cleaning and restoration. Our experienced teams are on call 24/7, ready to protect and restore your property quickly and efficiently. We specialize in Water Damage Remediation, Mold Removal, Fire & Smoke Damage Remediation, Commercial Air Duct Cleaning, and Asbestos & Lead Removal. Octagon is here to help every step of the way. We provide thorough assessments, effective mitigation strategies, and seamless communication with your insurance providers. Our commitment to customer satisfaction is reflected in every job we do. From small home cleanups to large commercial restorations, we stand by our 5-Year Guarantee, giving you peace of mind that the job was done right. Octagon Cleaning & Restoration – Your trusted partner in keeping your property safe, clean, and healthy. Contact us today for a free estimate and experience the Octagon difference. Your peace of mind is our priority.

"I would give 10 stars if I could. Octogon did a fabulous job after a frozen pipe disaster. They really went over and above what was required. Blaine, in particular, was wonderful. The house was left in perfect readiness for the rebuild. Thank you, Blaine and Octogon!"

Bonnie P on August 2023


"The 1964 bulkhead I had out back was replaced a year ago, but the wood and insulation underneath (the ceiling of the walkway underground to my basement under the back living room) took in water damage and the area was very musty for years. Tom Morneault of Morneault Environmental was the only guy I could find that would not only treat the wood to remove anything growing on it/get rid of the smell, but his team also removed old wood and insulation and re-insulated for me as part of the deal, which was still hundreds of dollars cheaper than the other companies I talked to, which would only remove the old wood and insulation, they don't put anything back in. Tom's team was here by 8:30 this morning and by 2pm they were done and it looks fantastic and smells crisp and clean. They didn't even stop for breaks or have to make any trips to get supplies, they had them all in the van, including the insulation boards. Very highly recommended if anyone is in the same situation."

Stephen T on June 2024

Veteran owned and operated with over a decade of experience in the demolition and environmental services.

"The 1964 bulkhead I had out back was replaced a year ago, but the wood and insulation underneath (the ceiling of the walkway underground to my basement under the back living room) took in water damage and the area was very musty for years. Tom Morneault of Morneault Environmental was the only guy I could find that would not only treat the wood to remove anything growing on it/get rid of the smell, but his team also removed old wood and insulation and re-insulated for me as part of the deal, which was still hundreds of dollars cheaper than the other companies I talked to, which would only remove the old wood and insulation, they don't put anything back in. Tom's team was here by 8:30 this morning and by 2pm they were done and it looks fantastic and smells crisp and clean. They didn't even stop for breaks or have to make any trips to get supplies, they had them all in the van, including the insulation boards. Very highly recommended if anyone is in the same situation."

Stephen T on June 2024


Avatar for Tri State Flood Inc

Tri State Flood Inc

10 Grant Ave W
2.00(
1
)
Approved Pro

Tri State Flood Inc

10 Grant Ave W
2.00(
1
)
Approved Pro
370 local quotes requested
21 years of experience

At Tri State Flood Inc, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of water, fires, mold and storms. Here’s what sets us apart: Water Removal and Storm Damage Restoration: When water wreaks havoc due to storms or other incidents, we’re here to help. Our 24/7 emergency response team swiftly tackles water extraction, drying, and structural repairs. Comprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup and fire restoration. Choose Tri State Flood Inc for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.

"Lesson learned. Always get an estimate. BEFORE the work is done. At least a digital copy. Arrangements for the project were made, with some one named Lynn, for the company to send someone to complete the work. We were quoted over the phone 4500-5000 which included a mold test. A sub contractor with an entirely different company (National Mold Company) was sent. When the contractor arrived, he stated that the job would be much more simpler than first thought. This led us to believe that the job would cost less, no. All said and done, they charged $5500. All said and done, it's almost like no work was done. The stains and the smell are still there. Only one actual board was taken upon the attic room. The ceiling in the bedroom was primed and painted but are still visible and have a funky smell. At this point I'm going to. Do what we should have done; Do the job ourselves. Just now with $5500 less dollars in our pockets. A detailed receipt was not given even though it was requested."

David B on August 2025

At Tri State Flood Inc, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of water, fires, mold and storms. Here’s what sets us apart: Water Removal and Storm Damage Restoration: When water wreaks havoc due to storms or other incidents, we’re here to help. Our 24/7 emergency response team swiftly tackles water extraction, drying, and structural repairs. Comprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup and fire restoration. Choose Tri State Flood Inc for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.

"Lesson learned. Always get an estimate. BEFORE the work is done. At least a digital copy. Arrangements for the project were made, with some one named Lynn, for the company to send someone to complete the work. We were quoted over the phone 4500-5000 which included a mold test. A sub contractor with an entirely different company (National Mold Company) was sent. When the contractor arrived, he stated that the job would be much more simpler than first thought. This led us to believe that the job would cost less, no. All said and done, they charged $5500. All said and done, it's almost like no work was done. The stains and the smell are still there. Only one actual board was taken upon the attic room. The ceiling in the bedroom was primed and painted but are still visible and have a funky smell. At this point I'm going to. Do what we should have done; Do the job ourselves. Just now with $5500 less dollars in our pockets. A detailed receipt was not given even though it was requested."

David B on August 2025


Avatar for Airtight Radon Solutions LLC

Airtight Radon Solutions LLC

11 Mandinbarb Cir
5.00(
15
)
Approved Pro

Airtight Radon Solutions LLC

11 Mandinbarb Cir
5.00(
15
)
Approved Pro
Customers say: Quick response
31 local quotes requested
1 years of experience

Welcome to Airtight Radon Solutions LLC ! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! Achieving a safer and healthier environment for every home by providing effective radon mitigation solutions and raising awareness about the dangers of radon gas. Professional Radon Testing and Mitigation Services

"Quick response and Great job! "

Kathy Z on July 2025

Welcome to Airtight Radon Solutions LLC ! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! Achieving a safer and healthier environment for every home by providing effective radon mitigation solutions and raising awareness about the dangers of radon gas. Professional Radon Testing and Mitigation Services

"Quick response and Great job! "

Kathy Z on July 2025


Avatar for Erickson Foundation Solutions

Erickson Foundation Solutions

14 Clement Rd.
4.54(
51
)
Approved Pro

Erickson Foundation Solutions

14 Clement Rd.
4.54(
51
)
Approved Pro
Customers say: True professional
24 local quotes requested
46 years of experience

Erickson Foundation Solutions specializes in foundation repair and basement waterproofing systems. We have been helping homeowners in our community fix their homes since 1979. With the help of the Supportworks and Basement Systems dealer networks, we have access to the best materials and foundation solutions in the industry to efficiently and effectively solve any problem you might have in your basement. All of our technicians are professionally trained, so you can be sure that you’re receiving high standards of professionalism and courtesy at every turn. Do you have any foundation problems? We can help!

"The company is working with me."

Richard N on April 2025

Erickson Foundation Solutions specializes in foundation repair and basement waterproofing systems. We have been helping homeowners in our community fix their homes since 1979. With the help of the Supportworks and Basement Systems dealer networks, we have access to the best materials and foundation solutions in the industry to efficiently and effectively solve any problem you might have in your basement. All of our technicians are professionally trained, so you can be sure that you’re receiving high standards of professionalism and courtesy at every turn. Do you have any foundation problems? We can help!

"The company is working with me."

Richard N on April 2025


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Radon Detection and Reduction questions, answered by experts

Installing a mitigation system reduces radon levels, which can cause lung cancer, providing peace of mind and long-term health benefits. It can also increase your home’s value, as many buyers prefer properties with radon safety measures in place. The investment is relatively low compared to the potential health risks associated with prolonged radon exposure.

Sampling typically takes 1-3 hours, and depending on the provider, lab results are available within 2-7 days.

Costs depend on property size, test types, and additional services like mold sampling.

DIY kits are available for basic testing. Professional services provide comprehensive results and recommendations.

Services test for allergens, mold, VOCs, and carbon monoxide levels to ensure a healthy indoor environment.

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The Amherst, NH 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.