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Avatar for Angstrom Testing Services LLC
Angstrom Testing Services LLC
4.9(
9
)
Radon Gas - AbatementRadon Gas - Testing

Serving Syosset, NY and surrounding areas

Approved

Small jobs welcome

Credit card accepted

Offers commercial services

"Angstrom Testing used a moisture meter and found that one of the kitchen walls and an area of the kitchen ceiling in my mom's apartment were wet. Then they took an air sample in the kitchen and sent the sample to the lab to determine the level of mold in the air. After that, they made a cut into the wet area of the kitchen ceiling and found a dripping water pipe. The top side of the ceiling was black with mold. They also took a piece of sheetrock out of the top of the wet kitchen wall and found more mold on the back of the wall (yuck!!).
They called me two days later with the air test results, and they told me that the level of mold in the air was very high. They also told me that there was probably a connection between my mom's symptoms and high levels of mold in the air. Makes sense. They also told me that that my mom should stay upstairs with me and my husband until we get rid of the moldy ceiling and wall in her apartment.
A few days after they called, Angstrom emailed me a report with all of the details of what they did and found. In the report, they wrote recommendations and procedures that a mold removal contractor should follow to safely remove the mold and dry and treat the wood wall frames and wood ceiling. Since the level of mold in the air was so high, they said in their report that the kitchen air should be cleaned with an air cleaner and that the kitchen appliances, cabinets, and floor should be wiped down to get rid of all the mold spores that were laying around.
I really appreciated all the work they did and all of the advice that they gave me to help me and my mom. My mom is now living upstairs with me and my husband, and she says that she is already starting to feel better. Although my husband is not too happy (LOL). Great company! Thanks.
"
Ground water infiltration occurred through the concrete slab in two rooms on the ground floor of the house causing water damage and mold growth on the overlying flooring. The cause of the water infiltration appears to be associated with cracks and a crater in the concrete slab, which is believed to have been caused by pile driving work being performed during the construction of an adjacent building.
Mold in HVAC Coil Compartment
Construction/demolition work in an  apartment unavoidably released high levels of dust that migrated into adjacent apartments. Dust containment methods, such as negative air filtration and poly sheeting, should have been used to prevent dust migration into adjoining spaces. Settled dust samples were collected from a table & curtain rod in a nearby apt, which revealed the presence of substantially elevated levels of silica and asbestos in the dust. Asbestos and silica are known carcinogens.
Water sampling
Recommended by44%of homeowners
Avatar for Phase 1 Restoration Inc.
Phase 1 Restoration Inc.
4.7(
21
)
Radon Gas - Testing

Serving Syosset, NY and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"The rep came out and reviewed the areas of concern.  He gave me an estimate on the spot. The next day I decided to go with JBH and the project was scheduled for the following week.  The workers arrived within the scheduled time period and they were very pleasant to work with. They were responsive, efficient and neat. The job was completed in no time.
"
Additional Photos
Response time2 days
2 neighbors recently requested a quote
Recommended by89%of homeowners
Oakhill Home Inspections
5.0(
1
)
Radon Gas - Testing

Serving Syosset, 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
2 neighbors recently requested a quote
Avatar for Anthi Environmental Corp.
Anthi Environmental Corp.
5.0(
9
)
Radon Gas - AbatementRadon Gas - Testing

Serving Syosset, NY and surrounding areas

Emergency services offered

"Very Professional, thorough and cost effective. Peter fulfilled his promise of removing the areas that tested lead positive at a GREAT price, was very prompt , professional and all in a timely manner. Would definitely use again. Highly recommended... Honest business."
Lead removal under HPD violations
Mold testing and remediation
Mold remediation
Lead removal under HPD violations
Mold testing and remediation

+59

Response time40 mins
Recommended by100%of homeowners
Jet Environmental Testing, Inc.
4.6(
8
)
Radon Gas - Testing

Serving Syosset, NY and surrounding areas

In business since 1998

Free estimates

Small jobs welcome

"We had contractors come in and give us a price for removal of what we thought was asbestos floor tile. A friend of ours who works in the school district told us to call Jet Environmental and get it tested. We did and as it turn out it wasn’t asbestos and save us a lot of money."
Response time5 hrs
Response rate98%
Recommended by57%of homeowners
Avatar for Northeastern Environmental Testing, Inc.
Northeastern Environmental Testing, Inc.
5.0(
2
)
Radon Gas - AbatementRadon Gas - Testing

Serving Syosset, NY and surrounding areas

In business since 2018

Free estimates

Emergency services offered

Northeastern Environmental Testing specializes in environmental consultation & testing. Our expert team will treat your home as if it was our own. Navigating the remediation plan together until your home is good as new. We offer 24/7 service please call to set up your inspection today!

Response time6 hrs
Response rate100%
Recommended by100%of homeowners
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Radon Detection and Reduction questions, answered by experts

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.

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 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.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

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.

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

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