What Happens if You Don't Replace a HEPA Filter? - The Consequences

If you're looking to improve the air quality in your home, a HEPA filter is a great option. But what happens if you don't replace it in time?HEPA filters are designed to capture dust, dandruff, pollen, and other contaminating particles. They are made of synthetic fibers bundled inside that trap these contaminants when air passes through them. A true HEPA filter works when it can trap and remove 99.97 percent of particles that are 0.3 microns in size. Most manufacturers offer a recommended exchange interval (usually between six and 12 months), and some portable air purifiers have an indicator light that indicates when the HEPA filter needs to be replaced.

With proper care and maintenance, the HEPA filter can last three to five years (depending on the brand). However, if your air purifier is constantly running or if your space is particularly filled with smoke or pollen, plan to replace the HEPA filter more often. If the filter is not changed in time, it will become clogged with microorganisms such as bacteria, viruses, and mold particles. You will not be able to clean the new ones and will only capture them on the surface of the filter. If you notice a visible buildup of dust or particulate matter on a HEPA filter (it may look gray or dirty) or notice a reduction in air flow through your portable air purifier, you can assume that this indicates that the HEPA filter needs to be replaced.

However, experts say that HEPA filters should always be replaced rather than cleaned. So, if you want to improve the air quality in your home without breaking the bank, a HEPA filter could be the perfect solution. But make sure to replace it regularly to ensure that it's working properly.