If you don't replace your HEPA filter in time, it can lead to serious consequences. Clogged with microorganisms such as bacteria, viruses, and mold particles, the filter will not be able to clean the new ones and will only capture them on the surface. As a result of not changing the HVAC filter regularly, your air conditioning unit will eventually break down and stop working. The motors in the air conditioning system are not designed to operate continuously under voltage.
If the air filter or filters remain full for too long, the air conditioning system will fail completely. 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 airflow through your portable air purifier, it's time to replace the filter. Experts suggest that HEPA filters should always be replaced rather than cleaned. The HEPA filters in an air purifier are used to remove dust, dandruff, pollen, and other contaminating particles. The best way to know when it's time to replace your HEPA filter is to watch out for (and pay attention) to any signs that it's not working as well as it used to.
Most manufacturers also offer a recommended exchange interval (which usually ranges from six to 12 months), and some portable air purifiers have an indicator light that tells you when to replace the HEPA filter. However, time isn't always the best indicator, as the real reason to replace a HEPA filter is based on the amount of particulate matter that is collected, which can vary a lot in different environments. A HEPA filter has synthetic fibers tightly packed inside that trap these contaminants when air passes through them. They can also be found in your home air treatment system, and some vacuums have them, too. 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.
HEPA filters are very good at capturing particles of all sizes and, in theory, they remove at least 99.97 percent of particles with a size of 0.3 microns. With proper care and maintenance, your HEPA filter can last three to five years (depending on the brand).It's important to remember that not replacing your HEPA filter can have serious consequences for your air conditioning system and your health. To ensure that your air purifier is working properly and efficiently, make sure you replace the filter regularly according to manufacturer's instructions.