"True HEPA" is an unfortunate side-effect of companies like BlueAIR, which use names like "HEPASilent" to refer to filtration which doesn't meet HEPA requiremen

"True HEPA" is an unfortunate side-effect of companies like BlueAIR, which use names like "HEPASilent" to refer to filtration which doesn't meet HEPA requirements. (Note that I'm not saying that HEPASilent is better or worse than HEPA H13, just that the name is designed to obfuscate.) Companies need some way to help consumers differentiate filters which meet HEPA requirements from those which don't.