About Us
You only get one chance to do it right the first time. When you take all things into consideration, there is only one best way to get the job done.
Our History
Mark Nardontonia, the owner and president of ESI, is a second-generation security professional and has been actively involved in providing security services in Central PA since 1980. Mark’s father John started working with electronic security in the early 1960s and later established his own company in the 70s. When John retired in 1997, Mark founded ESI and has been providing security installation and maintenance to many of the same longstanding customers. With close to 40 years of experience and expertise in the field, Mark continues to uphold the family legacy of providing top-notch security solutions.
Why We Stand Out
Staying at the forefront comes with a cost and challenges. Nobody willingly becomes a Beta test site, but it is a necessary role that someone has to take on. This is why we meticulously test and assess each product before introducing it to any of our clients.
