High-efficiency particulate air (HEPA) filters are advised for allergy sufferers. By capturing microscopic particles such as mold spores, dust mites, pet dander, and pollen, HEPA filters enhance indoor air quality and lessen allergy symptoms. For efficient filtration, look for HEPA filters with a MERV rating of 17–20. It's essential to replace filters on a regular basis to preserve optimal performance and reduce allergy triggers in the house.