California Air Resources Board

Note: Verifications are issued chronologically. The most recently issued Executive Order or individual attachment is the one which is currently in effect and is listed below each manufacturer’s verification. The most recent Executive Order supersedes any previous Executive Orders for the same product. Should you wish to view any previous Executive Orders or attachments for reference purposes related to a manufacturer’s verification, please view the associated link below each description.

CARB has verified ESW Technologies' (formerly ESW Canada) ThermaCat^TM diesel retrofit system for certain 1996 through 2010 model year heavy-duty diesel engines used in off-road vehicles and certain 1993-2006 model year heavy-duty diesel engines used in on-road vehicles. The ThermaCat^TM system reduces emissions of diesel particulate matter by at least 85 percent and is designated as a Level 3 plus system. The primary components of the actively regenerated ThermaCat^TM system include a silicon carbide wall-flow filter, a diesel oxidation catalyst and a system controller. The ThermaCat^TM systems are compatible with on-road and off-road vehicles using diesel fuel that contains up to 20 percent biodiesel. Specific conditions for which the ThermaCat^TM system has been approved may be found in the Executive Orders below.

Superseded Executive Orders