Top-rated mold testing and remediation specialists.

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    Verified mold testing and remediation services reviews

Find Mold testing and remediation specialists in Merrimack

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
147 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


"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
72 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 Green Home Solutions of North Central MA

Green Home Solutions of North Central MA

15 Coughlin Street
4.89(
9
)
Approved Pro

Green Home Solutions of North Central MA

15 Coughlin Street
4.89(
9
)
Approved Pro
Customers say: Quick response
82 local quotes requested
4 years of experience

We provide comprehensive indoor air solutions that target the root cause of the problem, not just the symptoms. Our team of experts utilizes science-backed, eco-friendly treatments to eliminate mold, mildew, and other pollutants. With years of experience and a commitment to sustainability, we've successfully transformed thousands of homes, offices, and healthcare facilities across America. Our customers trust us to deliver cleaner, healthier indoor air without harming people, pets, or the planet. Our services include: Indoor Air Quality Assessments: Identifying and addressing potential health risks. Mold Remediation: Effective removal of mold and mildew. HVAC Duct Cleaning: Improving air circulation and reducing allergens. Probiotic Treatments: Enhancing indoor air quality and promoting a healthier environment. Breathe easy with Green Home Solutions.

"Kenson was very thorough and professional, and applied lots of experience to tailor their services to our exact needs."

Anthony G on February 2025

We provide comprehensive indoor air solutions that target the root cause of the problem, not just the symptoms. Our team of experts utilizes science-backed, eco-friendly treatments to eliminate mold, mildew, and other pollutants. With years of experience and a commitment to sustainability, we've successfully transformed thousands of homes, offices, and healthcare facilities across America. Our customers trust us to deliver cleaner, healthier indoor air without harming people, pets, or the planet. Our services include: Indoor Air Quality Assessments: Identifying and addressing potential health risks. Mold Remediation: Effective removal of mold and mildew. HVAC Duct Cleaning: Improving air circulation and reducing allergens. Probiotic Treatments: Enhancing indoor air quality and promoting a healthier environment. Breathe easy with Green Home Solutions.

"Kenson was very thorough and professional, and applied lots of experience to tailor their services to our exact needs."

Anthony G on February 2025


Avatar for Indoor Doctor, LLC

Indoor Doctor, LLC

35 Manchester Road, Unit 11A #213
4.87(
154
)
Approved Pro

Indoor Doctor, LLC

35 Manchester Road, Unit 11A #213
4.87(
154
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
258 local quotes requested

We provide peace of mind & solutions for your indoor environmental needs. IndoorDoctor ® evaluates the health of your indoors using proven testing techniques, unmatched state-of-the-art equipment, and years of experience handling environmental issues like yours. We help determine if your indoor environment is healthy through an unbiased assessment using proven testing techniques, unmatched state-of-the-art testing equipment, and years of experience handling issues like yours. We've successfully completed over 35,000+ indoor environmental inspections. Our goal is to provide you peace of mind about the true nature of your indoor environment. Environmental engineering combines science and engineering principles to improve aspects of the environment. IndoorDoctor® specialists use these fundamentals to define your environmental concern, evaluate its significance, and develop corrective actions or preventative plans to reduce the perceived hazard.

"Everything was done within a week. The job itself was done in 2 hours. Everything went great. "

Marianne D on October 2025

We provide peace of mind & solutions for your indoor environmental needs. IndoorDoctor ® evaluates the health of your indoors using proven testing techniques, unmatched state-of-the-art equipment, and years of experience handling environmental issues like yours. We help determine if your indoor environment is healthy through an unbiased assessment using proven testing techniques, unmatched state-of-the-art testing equipment, and years of experience handling issues like yours. We've successfully completed over 35,000+ indoor environmental inspections. Our goal is to provide you peace of mind about the true nature of your indoor environment. Environmental engineering combines science and engineering principles to improve aspects of the environment. IndoorDoctor® specialists use these fundamentals to define your environmental concern, evaluate its significance, and develop corrective actions or preventative plans to reduce the perceived hazard.

"Everything was done within a week. The job itself was done in 2 hours. Everything went great. "

Marianne D on October 2025


Environmental Consulting Solutions LLC

.
No reviews yet

Environmental Consulting Solutions LLC

.
No reviews yet

At ECS we provide safe, reliable, and consistent indoor environmental air quality testing. From asbestos bulk sampling for renovations or demolition of residential and commercial properties, to air quality sampling for microbial damage. With over a decade of experience in environmental testing and remediation, ECS can handle any project from large commercial demolition to residential renovations.

At ECS we provide safe, reliable, and consistent indoor environmental air quality testing. From asbestos bulk sampling for renovations or demolition of residential and commercial properties, to air quality sampling for microbial damage. With over a decade of experience in environmental testing and remediation, ECS can handle any project from large commercial demolition to residential renovations.


Avatar for Acadia Contractors

Acadia Contractors

780 Auburn Rd
No reviews yet

Acadia Contractors

780 Auburn Rd
No reviews yet
24 years of experience

Acadia Contractors specializes in Asbestos Removal across the state of Maine and New Hampshire. We have the most experience in the industry and give our customers the quality they deserve. As a DEP Licensed Asbestos Training Facility, we even train our competition. No one knows asbestos like we do. Give us a call for a free quote today!

Acadia Contractors specializes in Asbestos Removal across the state of Maine and New Hampshire. We have the most experience in the industry and give our customers the quality they deserve. As a DEP Licensed Asbestos Training Facility, we even train our competition. No one knows asbestos like we do. Give us a call for a free quote today!


"Tim and Chris were great to work with. They contacted me when they were going to be late due to traffic. The answered all my questions and they were very thorough. I would hire them in a heartbeat."

Rick P on July 2024

Our business specializes in removing mold from homes. We do quality work at low prices. We are a small locally owned business. We are certified and ready to help you with your mold issues.

"Tim and Chris were great to work with. They contacted me when they were going to be late due to traffic. The answered all my questions and they were very thorough. I would hire them in a heartbeat."

Rick P on July 2024


Avatar for Aspen Air Duct Cleaning Company

Aspen Air Duct Cleaning Company

270 Lawrence St
4.77(
43
)

Aspen Air Duct Cleaning Company

270 Lawrence St
4.77(
43
)
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Aspen Air Duct Cleaning are experts in diagnosing and eliminating indoor air quality problems for both residential and commercial customers in Boston, MA, and the surrounding areas since 2008. We also specialize in dryer vent cleaning to eliminate a commonly overlooked fire hazard as well as mold removal and remediation. We proudly offer 24/7 emergency services. Call for an estimate today!

"Punctual, responsive, knowledgable, hard working problem solvers, and straight shooters in their evaluation of our system. Did not duct seal, not appropriate for our configuration. Had lower estimates but these folks were worth it to me; I’d use them again."

Michael B on September 2022

Aspen Air Duct Cleaning are experts in diagnosing and eliminating indoor air quality problems for both residential and commercial customers in Boston, MA, and the surrounding areas since 2008. We also specialize in dryer vent cleaning to eliminate a commonly overlooked fire hazard as well as mold removal and remediation. We proudly offer 24/7 emergency services. Call for an estimate today!

"Punctual, responsive, knowledgable, hard working problem solvers, and straight shooters in their evaluation of our system. Did not duct seal, not appropriate for our configuration. Had lower estimates but these folks were worth it to me; I’d use them again."

Michael B on September 2022


American Environmental Testing Services of NE, LLC

1 Hardy Rd.
5.00(
5
)

American Environmental Testing Services of NE, LLC

1 Hardy Rd.
5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

AETS was founded in 2011 to provide our clients with lead inspections / risk assessments, indoor air quality assessments, healthy home assessments and training for professionals in Massachusetts and New Hampshire. With over 17 years of experience of providing knowledgeable, accurate & thorough environmental inspections and consulting services, Mickey Laskey of AETS has performed thousands of lead inspections and indoor air quality assessments in New England, and can assist you with the following services: Commercial: OSHA Surveys Residential: Lead Inspections, Lead Risk Assessments Lead Exposure Hazard Reduction Plans (NH) Specification Writing & Consulting Indoor Air Quality Assessments Mold Inspections and Consulting Services Healthy Home Surveys Homeowner / Agent Deleading Training (MA) Lead Inspector / Risk Assessor Training (NH) Water Sampling for Lead Mickey is well versed in the Massachusetts regulations and New Hampshire rules, and has guided thousands to successful results. He is also a Certified Microbial Consultant (CMC); a statutory requirement to do assessments in New Hampshire and is a highly recommended certification in Massachusetts. Whether you are under a Massachusetts Order to Correct Lead Hazards or a New Hampshire DHHS Order of Lead Hazard Reduction, Mickey can help.

AETS was founded in 2011 to provide our clients with lead inspections / risk assessments, indoor air quality assessments, healthy home assessments and training for professionals in Massachusetts and New Hampshire. With over 17 years of experience of providing knowledgeable, accurate & thorough environmental inspections and consulting services, Mickey Laskey of AETS has performed thousands of lead inspections and indoor air quality assessments in New England, and can assist you with the following services: Commercial: OSHA Surveys Residential: Lead Inspections, Lead Risk Assessments Lead Exposure Hazard Reduction Plans (NH) Specification Writing & Consulting Indoor Air Quality Assessments Mold Inspections and Consulting Services Healthy Home Surveys Homeowner / Agent Deleading Training (MA) Lead Inspector / Risk Assessor Training (NH) Water Sampling for Lead Mickey is well versed in the Massachusetts regulations and New Hampshire rules, and has guided thousands to successful results. He is also a Certified Microbial Consultant (CMC); a statutory requirement to do assessments in New Hampshire and is a highly recommended certification in Massachusetts. Whether you are under a Massachusetts Order to Correct Lead Hazards or a New Hampshire DHHS Order of Lead Hazard Reduction, Mickey can help.

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Mold Testing and Remediation questions, answered by experts

Not necessarily. If the mold is only on the surface or in small areas, you may be able to clean it effectively without removing all the caulk. However, if the mold has deeply penetrated the caulk or the caulk is damaged or deteriorating, you should remove the caulk completely and replace it to ensure thorough mold removal and prevent future growth.

Mold remediation is required if the mold growth covers more than 10 square feet of an area or the mold spore concentration is above 500 spores per cubic meter of air. You should also seriously consider remediation if there is a lot of water damage along with mold growth or if you suspect your HVAC system has been contaminated with mold. Remediation is also crucial if the mold damage has been caused by sewage or other contaminated water.

Figuring out why you have a musty smell in your house is the first step to getting rid of it. Mold or mildew is most likely causing the unpleasant odor. People use these terms interchangeably, but they’re actually different.

Mold is a fungus that loves to grow in moist, humid places. It’s typically black or green and has a raised, uneven texture. Stay vigilant for signs mold may be growing in your home. 

You’ll find mildew growing on your shower walls and in your bathroom’s nooks and crannies. It’s a specific type of mold that grows flat. Mildew is usually white, gray, or yellow.

Yes, drywall mud can get moldy—though the presence of moisture is required for this to happen. That’s why the best way to keep your powdered drywall mud fresh for as long as possible is to keep it in dry storage conditions. If you live in a humid area, it might not make sense to stockpile a lot of powdered drywall mud before you’re ready to use it. As for premixed drywall mud, avoid opening the container until you’re ready to use it—and don’t expect it to last longer than six months.

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

The Merrimack, NH homeowners’ guide to mold testing and remediation services

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