Clean Diesel Clearing House

The Clean Diesel Clearing (CDCH) House is a trusted, web‐based tool that enables users to determine the best available emission reduction technology (BAT), including verified products (and other product options allowed by specific program requirements) for retrofitting diesel‐powered vehicles and equipment.

The CDCH can be used to support retrofit products, clean fuel options and clean fuel vehicle selections that satisfy BAT regulations, as well as voluntary emission reduction program requirements.