Replacement for IQAir HealthPro Compact, HealthPro and HealthPro Plus Air Purifier. Replace every 2-4 years. IQAir Cleanroom grade HEPA filter uses as replacement filter for the HealthPro air purifier contains 99.97% DOP media, mini-pleat with solvent-free separators, and patented expanded polystyrene (EPS). This filter lasts up to 2-4 years.