Ward Diesel Filter Systems

Protecting Firefighters Since 1987.

Ward Diesel Filter Systems manufactures and installs apparatus-mounted exhaust filtration systems designed to help protect firefighters from harmful diesel exhaust exposure inside the station, on scene, and wherever apparatus operate.

Established 1987

More than 30 years of exhaust filtration experience for the fire service.

Who We Are

Apparatus-mounted exhaust protection built for the fire service.

Ward Diesel Filter Systems has spent decades focused on cleaner air and firefighter safety. Our NO SMOKE filter systems are mounted directly to the apparatus, giving fire departments a flexible source-capture solution that does not rely on hanging hoses or fixed bay connections.

This vehicle-mounted approach allows departments to reduce exhaust exposure while maintaining portability, indoor protection, movement flexibility inside the station, and added protection when apparatus are operating away from the bay.

1987 Company Established
1989 NO SMOKE Patented
30+ Years Serving Fire Departments
1000s Installations Worldwide

Our History

Built around a better way to capture exhaust at the source.

Ward Diesel was established in 1987, and the NO SMOKE exhaust removal system was patented in 1989 as an apparatus-mounted alternative to older hose-based systems.

1987

Ward Diesel Filter Systems is established.

The company begins its long-term focus on diesel exhaust filtration and firefighter exposure reduction.

1989

The NO SMOKE system is patented.

Henry Kaeser patents the original apparatus-mounted NO SMOKE exhaust removal system, creating a source-capture alternative to hanging hoses.

2006

NO SMOKE 2 is developed.

NO SMOKE 2 is created for 2007 and newer EPA emission compliant apparatus, expanding protection for modern diesel engines.

2013

Ward Diesel expands under Scott H. Beecher.

The company grows its product offering and continues increasing awareness around firefighter cancer prevention and diesel exhaust exposure.

American-Made Quality

An in-house operation backed by manufacturing control.

Ward Diesel sources NO SMOKE system components and parts from sister company EL Manufacturing. This in-house relationship helps maintain product quality, consistency, and American-made production standards.

  • Apparatus-mounted source capture
  • Factory-direct installation support
  • Fire-service focused system design
  • Built for station, on-scene, and portable protection

Why Ward Diesel

Hands-on service. Proven systems. Cleaner air inside and out.

Ward Diesel works directly with fire departments to provide vehicle-mounted exhaust protection systems that are practical, reliable, and backed by decades of service.

01

Vehicle-Mounted Protection

NO SMOKE systems stay with the apparatus, giving departments protection beyond one fixed station bay location.

02

Factory Direct Installation

Systems are sold directly to the customer and installed by Ward Factory Direct Service Technicians at the customer’s facility.

03

Firefighter Health Focus

Ward Diesel is committed to reducing diesel exhaust exposure and supporting broader firefighter cancer prevention awareness.

Customer Commitment

Cleaner air for the people who protect our communities.

At Ward Diesel Filter Systems, our mission is to help fire departments reduce harmful exhaust exposure with equipment, service, and education built around firefighter safety. With thousands of installations currently operating, NO SMOKE has proven its capability and reliability to fire and rescue personnel throughout the world.

Ready to Protect Your Station?

Talk with Ward Diesel about your apparatus exhaust filtration needs.

Whether your department operates older diesel apparatus, newer EPA-compliant vehicles, gas-powered apparatus, or ARFF equipment, Ward Diesel can help identify the right NO SMOKE solution.