Final answer:
Most manufacturers recommend replacing PFAS filters every 3-6 months.
Step-by-step explanation:
Manufacturers generally recommend replacing PFAS (Per- and polyfluoroalkyl substances) filters every 3-6 months, depending on the specific product and usage. PFAS are man-made chemicals widely used in various industries due to their unique properties including resistance to heat, water, and oil. One common use is in water filter systems where PFAS filters are employed to remove these contaminants from drinking water. Over time, these filters can become saturated, reducing their effectiveness, thus requiring replacement.