California Environmental Solutions cleans, repairs and installs DPF's (Diesel Particulate Filters). We service all makes and models including Cummins, Caterpillar, Detroit Diesel, etc., and retrofit systems including HUG, Huss, Donaldson, JMI, and Cleaire. We are experts at downloading fault codes and other engine data. This allows us to properly diagnose the fault and perform the correct repair as needed. Need emissions testing? California Environmental Solutions is a J1669 certified smoke opacity testing facility. Looking to improve DPF regeneration performance? We stock EnerBurn, a liquid diesel fuel combustion catalyst in convenient sizes for "cash and carry" at all of our CES service locations.