Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in West Harrison, NY

Q: What level of radon is considered safe or dangerous?

• <div><p>No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.</p></div>

Q: How do you remove radon from your home?

• <div><p>You can vent radon out of your house sometimes by simply opening a window, but it won&rsquo;t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.</p></div>

Q: What would cause radon in a house?

• <div><p>The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.</p></div>

Q: What types of radon mitigation systems are available?

• <div><p>Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.</p></div>

Q: How long can you go without a radon fan?

• <div><p>Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.</p></div>

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in West Harrison, NY?

Select your specific project to find the pro for you.

Verified Reviews for Radon Detection And Reduction pros in West Harrison, NY

*The Angi rating for Radon Detection And Reduction companies in West Harrison, NY 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 West Harrison, NY 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 May 03, 2026

Reviewed in May 2026
Jeff was professional and answered promptly. He asked questioned and was direct and completed the removal in a timely manner. I have even recommended his service to a friend.
Land & Stone Management Corp
Request a quote
Reviewed in October 2025
We used Homeguard Environmental for two asbestos removal projects and they were fantastic. Excellent service and work. The crew that did the work was very professional and worked efficiently and Francisco is extremely helpful and knowledgeable. I highly recommend them. Doug B.
Homeguard Environmental Services
Request a quote
Reviewed in September 2024
Ray did a great job,very accurate and extremely neat and clean process, highly recommend
JRT Contractor
Request a quote
Reviewed in July 2024
We recently had issues with our Radon mitigation equipment at our home. We were recommended to MDL by our realtor. Doug at MDL diagnosed our problem immediately over the phone & swiftly repaired the problem the next day. Doug is very knowledgeable, professional and personable. Highly...
MDL Radon Mitigation and Measurement LLC
Request a quote
Reviewed in March 2024
Helped us to get rid of the racoon as well as cut parts of the tree and and applied metal flashing and shingles to the roof. Was quick and responsive and kept his word. I do not have the computer skills to upload a photo.
RM ECO Pest Control
Request a quote
Reviewed in March 2024
The installation of the radon mitigation system exceeded my expectations. The installers arrived at the scheduled time, provided a detailed explanation of the work they were going to do and worked very efficiently. They were very friendly and an absolute pleasure to have in my home.
Radon Testing Labs, Inc.
Request a quote
Reviewed in June 2023
I cannot say enough good things about Andy and Poseidon Inspections. This is my husband and my first house purchase, and Andy went above and beyond to explain the process to us. When we finally got an accepted offer for a house, Andy moved quickly and was able to schedule our inspection for the...
Poseidon Home Inspections LLC
Request a quote
Reviewed in February 2023
Dennis is professional, knowledgeable, thorough and personable. His testing and remediation recommendation fees are very reasonable and his recommend solutions are cost minded and affective. I highly recommend his services.
Tri State Mold Solutions, Inc
Request a quote
Reviewed in August 2022
Removal of a Blue Spruce stump and accompanying roots and cleanup.
Full Landscaping & Tree Service LLC
Request a quote
Reviewed in September 2021
Amazing! Fernando was really helpful. He looked at our job, and helped us navigate an erroneous elevated radon level due to the weather. He saved us in a situation where we would have spent a thousand without solving anything. Thank you. Your guidance and engagement was very helpful.
Northeast Mitigation Services
Request a quote

Find Radon detection and reduction specialists in West Harrison

JCL Home Inspections

4.9(

)

Serving West Harrison, NY and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: Quick response

"Explains everything and very responsive to questions"

Response time4 hrs

2 neighbors recently requested a quote

Recommended by100%of homeowners

Request Quote

MDL Radon Mitigation and Measurement LLC

5.0(

)

Serving West Harrison, NY and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Doug was professional, timely and really took pride in his work. He took time to fully explain the process and how radon gets in the home. Our radon remediation system installation was flawless."

Response time6 hrs

Response rate90%

Recommended by96%of homeowners

Request Quote

Doctor House Inspections, LLC

4.9(

)

Serving West Harrison, NY and surrounding areas

Approved

In business since 2014

Customers say: Quick response

"Olivier was terrific. He was incredibly thorough and left no detail out of his inspection or his report. He took the time necessary to inspect all elements of the inside and outside of the home, he was patient in explaining what he found, and he was able to put all his comments within a helpful perspective. I would recommend him 100% and would use him again without hesitation."

+18

Response time4 hrs

Response rate100%

Recommended by100%of homeowners

Request Quote

Phase 1 Restoration Inc.

4.7(

)

Serving West Harrison, NY and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Men came earlier than scheduled,went right to work,and finished the job in about an hour. They were friendly and professional,answering my questions,and cleaning up afterwards.I highly recommend them.The price was almost 5 times less than the other company I got an estimate from. Highly satisfied.
"

Response time2 days

4 neighbors recently requested a quote

Recommended by89%of homeowners

Request Quote

Essential Home Services, LLC

5.0(

)

Serving West Harrison, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Credit card accepted

"He was prompt and very professional. He explained the process and how long it would take. It was a pleasure to meet this young man. I would hire him and I'll refer him to family and friends. Thanks again for your assistance. MS. M. CRAWFORD"

Response time6 hrs

8 neighbors recently requested a quote

Recommended by11%of homeowners

Request Quote

Oakhill Home Inspections

5.0(

)

Serving West Harrison, NY and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

I pride my company on reliability, great communication, integrity, and quality work. I am an expert in home inspections, mold testing and radon testing and remediation. I will do my absolute best to keep you as educated and informed on your particular inspection project. I look forward to earning your business! Book with me online or feel free to give me a call today! My focus is protecting your home investment.\n\nThank You,\nCharles Rauch\nOakhill Home Inspections

Response time5 hrs

3 neighbors recently requested a quote

Serving West Harrison, NY and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Quick response to request for quote, performed radon test as scheduled and emailed results quickly."

Response time2 days

17 neighbors recently requested a quote

Recommended by96%of homeowners

Request Quote

Secure Home Inspections of NY, LLC

4.9(

)

Serving West Harrison, NY and surrounding areas

In business since 2018

Free estimates

Warranties offered

"His report was very detailed with pictures, he fallow up to make sure I got my report, great communication and great customer service, he didn't miss anything I didn't see"

Response time1 hour

Recommended by100%of homeowners

Request Quote

S.W.A.T. Environmental NY

4.4(

)

Serving West Harrison, NY and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"They are honest, as they told me upfront, not licensed for Radon remediation, only testing in Putnam County."

Recommended by97%of homeowners

Serving West Harrison, NY and surrounding areas

In business since 2017

Credit card accepted

"Exceptional service from a well groomed, uniformed technician ..:very honest And knowledgeable ."

Response time1 day

Recommended by100%of homeowners

Request Quote

Showing 1-10 of 34

Radon Detection and Reduction questions, answered by experts

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

You can vent radon out of your house sometimes by simply opening a window, but it won’t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

The West Harrison, NY 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.

See all articles

Mitchell Grant
•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Alison Kasch
•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
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.
Angi
•
Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
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.
Amy Freeman
•
Jul 9, 2026Jul 9, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.