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Horizon DPF

The Horizon® is specifically designed to provide cost-effective diesel particulate (PM) reductions for in-use diesel engines operating in on-road vehicles and duty cycles including cold exhaust and older engines. Features of the Horizon include include:

  • CARB verification to Level 3+ (>85%) for PM
  • The practical alternative to vehicle replacement
  • Proven retrofit solution for school buses
  • Industry leading advanced monitoring, diagnostics and data retrieval
  • Durable state-of-the-art stainless steel technology
  • Eligible for local, state and federal funding programs

This active regeneration system uses clean electricity, through an integrated heating element, to “cook-off” the captured diesel particulate, much like a self cleaning oven, while the vehicle is parked.

The Horizon is managed by ESW CleanTech’s proprietary MLC® which monitors system parameters and controls the regeneration process. The MLC also logs the monitored parameters for later retrieval and analysis.


ESW CleanTech uses only the highest quality materials, including all stainless steel construction, and a robust silicon carbide diesel particulate filter for enhanced durability. Additionally, numerous inlet/outlet end cone configurations are available for installation ease.

The modular design of the Horizon facilitates service and de-ashing of the diesel particulate filter. The reusable metal seal (i.e. no gaskets to replace!) and band clamp design enables quick turnaround for maximum uptime.


The Horizon balances the mandate for cleaner air with the demanding requirements of real-world on-road diesel applications, and the desire to maximize the economic life cycle of your equipment, while avoiding costly replacement.

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