Established in 1985, OBAR SYSTEMS is one of the first radon mitigation companies in the country. OBAR has installed over 30,000 radon mitigation systems in NJ, NY, CT, and PA. We are a full service company that provides testing, design and mitigation services for both radon and Vapor intrusion mitigation. OBAR also provides a full line of mitigation products and radon supplies to contractors and homeowners. We strive to maintain our reputation as honest, hard working professionals who can be trusted to get the job done.

  • Diagnostics and system design and installation for residential and commercial properties
  • Guaranteed results confirmed by independent testing
  • Prompt & friendly service
  • Free estimates
  • Serving NJ, NY, CT, & Eastern PA


If your home has tested above 4 pCi/L you can count on us to help. We have over 30 years of experience helping homeowners, realtors, and attorneys resolve radon problems. While some companies are content to send out a technician to “phone in your radon system” we have a Radon Specialist at your home overseeing every aspect of the job. We not only guarantee our system we guarantee your satisfaction.

The most common radon mitigation is an active Sub Slab Vent system. Combined with simple sealing, it is the most cost effective solution for a radon problem. It is so standard that many states have adopted it in their building codes. If your home is in northern NJ and was built after 1991 you may have a passive system that only requires a fan installation to fix the radon problem in your home.

We have the solution for your home. Obar’s experience ranges from 200 year old historic homes to new construction, from little lake front cabins to 500,000 sq. ft. commercial buildings, and in every case we have produced a cost effective solution to solve our clients radon problems.


  • Radon Testing for air and water
  • Independent lab results sent from RTCA directly to you

It is important that you test your home for radon, both in the air and the water. Obar has provided radon testing services for over 30 years. We have always used a 3rd party lab because we believe it is a conflict of interest for a company to be both the lab and the mitigation company. Nowadays with numerous mitigation companies owning their own labs, frequently the first time a homeowner hears of a radon problem is when they receive a call from someone offering to fix it. We consider the practice of labs using the results obtained from home inspectors tests to solicit jobs is unethical at best. We guarantee that OBAR SYSTEMS has never and will never take part in that type of practice

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