Kistler O' Brien Fire Protection

Our company was founded in 1933 for the purpose of selling and servicing portable fire extinguishers. As fire protection technology grew, so did we, adding new products and capabilities to continually improve our service. We were one of the earliest distributors of fire suppression systems for commercial cooking appliances and one of the first installing distributors of Halon 1301 fire suppression systems.

Kistler Obrien Local Fire Protection Service Fleet Lehigh Valley PA
George Kistler

We provide full service fire protection.

Kistler O'Brien handles all aspects of fire protection, from consultation to design, installation, maintenance, testing and inspections. At Kistler O'Brien Fire Protection, our number one corporate priority is to perform all service work on time. Toward that end, we are pledged to respond to all customer inquiries courteously and promptly, and provide high-quality services in a friendly and efficient manner.

George Kistler


ANSUL Manufacturer LogoAmerex Manufacturer LogoBadger Manufacturer LogoSiemens Manufacturer LogoKidde Fire Systems Manufacturer LogoIEP Technologies Manufacturer LogoVesda Manufacturer LogoPyro-Chem Manufacturer LogoStat-X Manufacturer LogoFire Trace Logo

Kistler O'Brien Fire Protection Bethlehem Pennsylvania Building and Service Vehicles

Our factory-trained, certified technicians are on call 24/7.

Kistler O'Brien Fire Protection employs factory-trained technicians who are experienced in a number of fire protection disciplines, and who can provide solutions for most service and maintenance challenges. Our service technicians are on call 24 hours a day, 7 days a week. We have almost 30 technicians that are NAFED and PAFED certified. Additionally, we have almost 40 employees that are NICET certified. Click here to view our state-of-the-art training room for new employees and ongoing technician training.

Kistler O'Brien Fire Protection Bethlehem Pennsylvania Annex Building

Kistler O’Brien Fire Protection Careers

Interested in joining our team?

Kistler O'Brien Fire Protection is looking for energetic, dedicated personnel who are eager to try new things. If this sounds like you, please check out our job openings and apply below.

Today, Kistler O'Brien provides total capabilities in fire alarm and detection systems as well as many types of fire suppression systems. We continue to grow with the industry and are always looking for new ways to help our customers.

Kistler O’Brien Fire Protection Service Van

We service Pennsylvania, New Jersey, Delaware, New York and Maryland.

Kistler O'Brien Fire Protection was founded in Allentown, Pennsylvania and now has offices in Bethlehem, Reading and West Chester, PA. We provide fire protection services for areas of Pennsylvania, New Jersey, New York and Maryland.


Philadelphia License Number 22011/28978 ● Licensed by the New York State Department of State: License Number 12000212285