About Us

In 1933, Kistler O’Brien Fire Protection, a Lehigh Valley native, was founded by George W. Kistler Sr., for the purpose of selling and servicing portable fire extinguishers. As fire protection technology grew, Kistler O’Brien Fire Protection added new products and capabilities to continually improve service and become the leader in special hazard fire protection. 

It was our mission to advance life safety in the workplace. We now manage all aspects of fire protection, which include consultation, design, installation, maintenance, testing, inspection and repair. We provide total capabilities in portable fire extinguishers, fire alarm and detection systems as well as many types of fire suppression systems including FM-200, Novec, Ingeren, CO2 and Foam. 

In 1975, George W. Kistler Sr. turned the presidency over to his son, the late George W. Jr. In their leadership, the company grew from just two employees to now over 180 with the support of Eric Blasser, Kistler O’Brien’s current CEO/President. The company has continued its momentum to grow and innovate within the fire protection industry and surrounding communities.

Dedicated to protecting life and property since 1933.

One-Stop-Shop, Streamlined Solution

As a one stop shop, streamlined solution for your company’s fire protection needs, the Kistler O’Brien team is committed to not only keeping you up to code, but helping you to protect your employees and your property from fire. It’s quite simple — our work makes your work safer.

Our Work Makes Your Work Safer

Kistler O’Brien Fire Protection is your local, commercial, fire protection provider. We offer streamlined fire protection services to businesses throughout the Tri-State Area. With offices in Bethlehem, Reading and West Chester, Pennsylvania, Kistler O’Brien proudly services over 10,000 businesses within the region.

By choosing “KOB” as your life safety partner, you can expect uncompromising service standards. We are dedicated to offering the best in the business, to help protect your employees and your property from a worst-case scenario and to keep you in compliance. We understand that our work makes your work safer, so you can expect the level of service to be top quality from a team ingrained with integrity.

Additionally, we pride ourselves on being the most reliable fire protection company during an emergency. It is all hands-on deck when one of our customers needs our assistance and time is of the essence. Our factory-trained and industry-certified technicians are available 24/7 to respond immediately and effectively.


Through The Years


Founded by George W. Kistler Sr.


Kistler O’Brien Fire Protection became one of the first in the region to install an automatic suppression system in the ventilation of commercial cooking operations.


Installed first CO2 Suppression System.


Kistler O’Brien Fire Protection was the first in the Mid-Atlantic region to install Halon 1301 fire suppression system, which could safely suppress a fire without causing more damage to the equipment.


Became a Fenwal Explosive System distributor.


George W. Kistler Sr. turned the presidency over to his son, George W. Jr.


Became a Pyrotronics Fire Alarm Distributor.


Kistler O’Brien worked with DuPont Senior Engineering Designer to develop an extended release Halon 1301 system for gloveboxes at Savannah River Plant.


Kistler O’Brien joined the Vehicle Suppression System game as we installed our first Offroad Vehicle System.


We began Sprinkler System inspection, testing and maintenance & Foam Sprinkler System commissioning.


Kistler O’Brien opens the Reading, Pa. location. This office is currently located at 101 Blair Avenue, Reading Pa.


Kistler O’Brien opens the West Chester, Pa. location. This office is currently located at 210 Carter Drive, Unit 5A, West Chester.


Installed our first nitrogen generator system (protect dry & preaction system piping from internal corrosion).


Installed our first water mist system.


Introduced Kistler O’Brien’s Company Mascot, “KOBe” at the Lehigh Valley IronPigs’ Opening Night.

Our Passion Reflected in Our Partners

Kistler O’Brien Fire Protection is a proud supporter, sponsor and partner of the Burn Prevention Network, Camp Susquehanna and the LVHN Burn Unit Survivor Programs.

We are here to help with full-service fire protection services.



2210 City Line Road

Bethlehem, PA 18017

MON - FRI: 7:30AM - 4:30PM

Emergency Service 24/7


101 Blair Avenue


MON - FRI: 7:30AM - 4:30PM

Emergency Service 24/7


210 Carter Drive, Unit 5A

west chester, pa 19382

MON - FRI: 7:30AM - 4:30PM

Emergency Service 24/7

© 2021 Kistler O.Brien Fire Protection. All Rights Reserved.