MACC2 Residential Catalytic Silencers

20 to 25 dBA Noise Reduction

The MACC2 provides customizable emission reduction combined with Maxim’s best silencing technologies and is engineered to provide a residential grade attenuation. Maxim MACC Catalytic Silencers are engineered for larger horsepower engines while maximizing your emissions and noise compliance. Constructed of carbon steel with multiple orientation options available, the MACC Catalytic Silencer can be engineered and designed to your specific requirements. Maxim Silencers are proudly made in the USA.

Highly Efficient Emission Reduction

  • Three-Way (NOx, CO, NMHC, HcHo)
  • Oxidation (CO, NMHC, HcHo)
  • Diesel Oxidation (CO, NMHC, PM)

Typical applications: Gas reciprocating internal combustion engines, natural gas compression packages, electrical power generation, and engine driven pumps


  • Easy access to rectangle catalysts, one person can service unit
  • Guaranteed emission reductions
  • Catalyst wedge-sealing design
  • Heavy duty, welded construction
  • ANSI drilled flanges on inlet and outlet
  • Sampling ports per EPA and TCEQ guidelines.
  • Elements are installed parallel to each other to reduce back pressure

Options / Accessories

  • Stainless steel construction: 304 or 316
  • External insulation available
  • Multiple attenuation/noise reductions available
  • Multiple rectangle element sizes and configurations available
  • Three-Way (NOx, CO, NMHC, HcHo), Oxidation (CO, NMHC, HcHo) or Diesel Oxidation (CO, NMHC, PM) rectangle elements
  • Special paints and finishes available
  • Complete range of exhaust accessories

Attenuation Curve

Download the Maxim MACC2 spec page click here

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Fields Marked with * are required

Listed sound data is based on typical performance and should not be considered absolute.

*See nomenclature guide for additional information on part number creation.

To order or for more information, call us at 800-234-6778 or complete our Contact Form

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