Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Princeton, NJ

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Princeton, NJ?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Princeton

Avatar for North Jersey Radon Services LLC
North Jersey Radon Services LLC
5.0(
10
)

Serving Princeton, NJ and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Chris came to my house. He was here for about four or five hours. He really worked hard getting around all the other pipes and things in the basement. He’s very thorough and what he does. Every aspect of the job was done precisely. I would hire him again and recommend him to anybody that needs a Radon system. And he’s a very nice guy. I hope this helps you on picking a good Radon person to do your radon system. Northern New Jersey Radon services is the one to choose."
Internal piping
external fan
Pit installation
excavation of the pit
start of concrete removal

+7

22 neighbors recently requested a quote
Avatar for Radon Shield LLC
Radon Shield LLC
4.9(
103
)

Serving Princeton, NJ and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"Radon Shield was hired after I got a higher then expected reading for radon in by home when selling it. Benedict shared a lot of great advice about radon gas in the home, he was able to schedule the install in a very fast time frame which was extremely helpful because I was selling my home. The quality of work was outstanding and he did a great job explaining thing to me and by wife. He also did a great job cleaning up after the install. I would hire Radon Shield in the future in needed."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+10

Recommended by100%of homeowners
Avatar for Radon Shield, LLC
Radon Shield, LLC
5.0(
85
)

Serving Princeton, NJ and surrounding areas

In business since 2013

Free estimates

"My home was recently tested for radon, and needed remediation. I'm glad I gave Radon Shield a call! Benedict was able to come by within the week to take a look. He walked me through the challenges, and we were able to figure out where to put the system in a manner that followed regulations and was still fairly unobtrusive. He had given me an estimate over the phone, so there were no surprises when the time came. They installed the system on the spot. My large and cluttered basement wasn't the easiest to work with, but Benedict and his team were able to handle it professionally and cleanly in the span of about 5 hours. With the system they installed, they brought the radon level down from 5.6 to 0.8. I wish I had tested for radon again a few years ago and installed this system sooner. I think they even left the basement cleaner than when they started! Thanks again!"
Plainsboro NJ
Trenton NJ
Mitigation system
Newark NJ
Flemington NJ

+10

Recommended by100%of homeowners
Avatar for RADATA, LLC
RADATA, LLC
4.2(
200
)

Serving Princeton, NJ and surrounding areas

In business since 1984

Free estimates

Warranties offered

"Top notch company and extremely professional. They did an excellent job and worked with me on the best placement for the radon mitigation system. Perhaps the best review I could give them is to say I will be hiring them to do my own house as well as I am situated on the Reading Radon belt. The job I am rating them on was my Dadâ s house which I am selling."
System on back of house
System next to downspouts
System in back corner
System by AC units
interior pipe in garage

+7

Recommended by95%of homeowners
Gara's Radon Solutions, LLC
4.6(
75
)

Serving Princeton, NJ and surrounding areas

In business since 2022

Free estimates

Warranties offered

"When my husband and I discovered we had elevated radon levels we contacted a company that our neighbors used. They made us wait 2 weeks came out and gave us a price and then said they had to â think overâ how they would install the system. Frustrated- I did a search and found Garaâ s Radon. Kevin came out right away to give a quote. He was very professional and his price was lower than the previous company. He quickly and efficiently installed our system within a few hours. What was more impressive was the results of our radon test after the installation of the mitigation system, as they dropped from 10.0 to 1.20. Thank you Kevin!"
Recommended by98%of homeowners
Avatar for Fresh Air Solutions, LLC
Fresh Air Solutions, LLC
4.7(
99
)

Serving Princeton, NJ and surrounding areas

In business since 2020

Free estimates

Warranties offered

"Looking to finish my basement, so I did a radon test. It came in at 2.5, which isn’t bad but I wanted to get it lower. Fresh Air LLC came out and set me up with a mitigation system. Upon re-test, the level was under 0.4. They were quick and effective."
Frost Wall
2 System Install
System and Sump Discharge
System
Interior Guage

+2

Response time12 hrs
Recommended by96%of homeowners
Avatar for Professional Home Inspections of New Jersey LLC
Professional Home Inspections of New Jersey LLC
4.6(
87
)

Serving Princeton, NJ and surrounding areas

In business since 1987

Free estimates

Credit card accepted

"It was a terribly cold and rainy day (it had just snowed 6inches).  Despite these conditions, he said he preferred to do the inspections and it proved very fruitful.  He arrived at the house 30min before the inspection time and had already taken countless pics and assessed the exterior prior to our arrival.  We walked around the house, checked out the roof and exteriors, gutters, etc...Spending nearly 90min just on the exterior!
We then moved inside to the basement, and once again, he walked us through every single step and provided great simple explanations to any questions we had.  In total, we spent approximately 4 hrs to finish the inspection on the 3400 sq ft house.
Going back to the rain, he was dead on!  We found a minor leak in one part of the roof which our Seller arranged to fix. This would never have been found on a nice, sunny day!
As promised, 2 days after the inspections, we received a very thorough report and 2 days after that (4d after inspection), the radon report. 
Everything went exactly as anticipated and planned. 
"
.
Chimney Needs Repair
Don't close before you get leaks repaired.
Old Electrical Panels can cause fires.
Recommended by94%of homeowners
Showing 1-10 of 20
Radon Detection and Reduction questions, answered by experts

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

The average radon mitigation system uses about 876 kWh of electricity per year, although the exact amount of electricity used will vary depending on the size of the radon fan. Once the system is installed, the annual increase to your energy bill could range from $30 to $300 per year, again depending on the size of the fan.

Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

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 Princeton, NJ 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.