The HENRY Company

This term for dust control (High Efficiency Particulate Arrestance) used to only be used for machines that could reliably recover asbestos, lead, etc., without contaminating the user or his surroundings, and it was usually a $400 to $500 option (mostly only available on commercial wet/dry vacs). If it said it was HEPA, it was, mainly because if it wasn't, the legal liability would be huge when someone got lead poisoning from your vacuum's false claims of emission control. Apparently now the rules concerning the use of this term have been relaxed (a lot!), because some of dirt-blowingest vacuums on the market claim to be "HEPA". Technically, they probably are HEPA for a couple of days - when all the filters are brand new. After a few weeks or months, though, many of them (especially bagless ones) are the worst for dust emissions. Ironically, probably the best vacuum for dust control has really distanced themselves from using the term "HEPA" (probably to avoid the aforementioned lawsuit thing). Come in & see which one it is.