NIKRO manufactures both electric and gas powered negative air vacuum equipment to capture particulate removed from duct systems. These high performance machines provide the vacuum and CFM required to achieve a negative pressure and collect contaminants in air duct systems. These portable vacuum systems are designed for both residential and commercial air duct cleaning and meet the National Air Duct Cleaning Association (NADCA) standards for the proper capture and Source Removal method of cleaning HVAC systems.