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Best radon detection and reduction specialists near Harriman, NY

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Top-Rated Radon detection and reduction specialists in Harriman - Updated Nov 2026

Acceptable Environment
4.9(
138
)
Radon Gas - Abatement

Serving Harriman, NY and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"I recently hired Acceptable Environment to install a new radon mitigation system in my home in Warwick, NY, and I couldn’t be happier with the results. From the very first call, their team was professional, knowledgeable, and responsive. They walked me through the entire process clearly, answered all my questions about the system and what to expect, and scheduled the work promptly. The crew arrived on time, worked efficiently, and installed the new system with minimal disruption to my household. They went above and beyond by carefully sealing the basement foundation and taking every precaution to contain dust and debris. When they finished, they cleaned up so thoroughly that you’d never know major work had just been done — no mess left behind at all. The best part? The post-mitigation testing came back with radon levels at just 0.3 pCi/L — down from well above EPA action levels before the install."
Response time11 hrs
Response rate89%
5 neighbors recently requested a quote
Avatar for Doctor House Inspections, LLC
Doctor House Inspections, LLC
4.9(
9
)
Radon Gas - Testing

Serving Harriman, 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."
Deck issues
Oil line in concrete slab
Rusted oil tank
A boiler with a direct hot water heater
Loose electrical service entrance wire

+18

Response time4 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for Next Level Home Inspection & Property Management
Next Level Home Inspection & Property Management
5.0(
7
)
Radon Gas - Testing

Serving Harriman, NY and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Tyler was very thorough. He paid attention and documented every detail. Next Level Home Inspection explained every step of the home inspection process and was very professional. I would completely recommend to others."
Response time11 hrs
Recommended by100%of homeowners
Avatar for Expediant Environmental Solutions, LLC
Expediant Environmental Solutions, LLC
3.9(
438
)
Radon Gas - AbatementRadon Gas - Testing

Serving Harriman, NY and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"They only tested for mold no other toxins It was only an air test A MOMENT IN TIME I was told so how accurate is this?? There's mold but not what they consider a problem. I can't breathe in my home It smells like mold The mold is in the walls Im not sure how the tests are accurate. Also They ruined my leather couch with the mist from the test pod"
Response time2 days
Response rate100%
6 neighbors recently requested a quote
Avatar for Family Home Inspections, Inc.
Family Home Inspections, Inc.
4.3(
45
)
Radon Gas - Testing

Serving Harriman, NY and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Mine was very meticulous and honest. I appreciate him doing a whole inspection when I only had a few issues needing a check up. He was not in a rush and made sure he checked every floor and room! I would friendly hire him again!"
Mold
Start of Mold Problems
Response time3 hrs
Recommended by88%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

Yes, many systems include warranties for performance. Confirm terms with your installer.

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.

The Harriman, NY homeowners’ guide to radon detection and reduction services

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