HEPA filters are renowned for their ability to capture microscopic particles, making them a popular choice for improving air quality in homes and businesses. But how often should these filters be replaced? The answer depends on the type of filter, the environment, and the level of use. At Service Champions, we recommend changing standard HEPA filters twice a year, once in the spring and once in the fall. This is also the recommendation of the Environmental Protection Agency (EPA), which states that studies have shown that portable air filters can reduce indoor pollutants and improve cardiovascular and respiratory health. For some cleanrooms, this may mean changing the HEPA filters every year. On the other hand, ultra-low penetration air (ULPA) filters, which capture more than 99.999% of particles, can last up to 8 years if regularly evaluated and considered effective. In addition to following a twice-a-year schedule, it's important to be aware of signs that indicate it's time to change the filter.
These include a musty smell or visible damage. Vacuum cleaners with HEPA filters should be changed more often if used in a commercial environment. Disposable humidifier filters or pads should also be changed regularly - usually every three months - to absorb mineral deposits and impurities from water and particles and bacteria from the air. When replacing a filter, it's important to sign and date it so that workflows are clear. This will help ensure that your HEPA filter is always working effectively and providing you with clean air.
