Autodarkening welding helmet with an advanced built-in air distribution system and flip-up welding shield. Provides protection of the user´s eye and face from harmful radiation including visible light, ultra-violet(UV), infra-red (IR) radiation, hot sparks and spatters resulting from arc welding and cutting. At the same time it provides protection against high speed particles. It is adapted for use with powered air purifying respirators CleanAIR® or with continuous flow compressed air breathing apparatuses CleanAIR®.