Confined space fans, blowers, and ventilation equipment circulate air in confined spaces to remove contaminated, stale, or hazardous gases and fumes and replace them with safe, breathable air. Air-powered fans and blowers connect to an air compressor to move air. They're intrinsically safe for use in areas where explosive gases are present. Electric fans and blowers plug into an outlet or connect to a 12V battery to move air and don't produce hazardous fumes like gas-powered systems. Gasoline-powered blowers and kits are used where access to electric power or an air compressor is not available. Ducts and vents connect to fans and blowers to direct airflow into and out of confined spaces.