With allergy season approaching, I am looking for honest feedback on whether are hepa air purifiers effective at removing fine dust and pet dander from a large living room. I understand the science behind the filtration levels, but I’m curious if they actually make a noticeable difference in air quality and respiratory comfort in a real-world home setting rather than a lab. I am considering a True HEPA filter versus a "HEPA-type" filter and would like to know if the higher cost of replacement filters for the certified models is actually worth the investment for a standard household.