A HEPA filter is designed to filter out up to 99.5% of PM2 particles, but after months of use, this value will decrease. If your filter efficiency drops below 95-90%, it's time to replace your HEPA filter. The best way to know when your HEPA filter needs to be replaced is with a separate air quality monitor. To check the condition of the filter, start by shaking it to remove any accumulated dirt and particles.
Then, look for any breaks or holes in the filter, especially along the edges. If you see any tears or holes, replace the filter. You can also hold the filter up to the sunlight and if you can't see any light through it, it's time for a new one. Most air purifiers have notifications that tell you when it's time to replace the HEPA filter.
For mine, it's once a year, but for other filters, it may be less time. It's best to follow what the manufacturer suggests just to be sure. Additionally, a quick visual inspection can reveal if your filters still retain their structural integrity, so it would be a good idea to set up a routine schedule for checking them. Another sign that you may need to change your air filter is a sudden increase in your electricity or electricity bill for several months. If the air cleaner is not working efficiently, it could be a sign that the HEPA filter needs to be cleaned or replaced. Before diving into the signs that it's time to change your air filter, it's important to understand the most common types of filters on the market.
Some are washable and reusable, while others need to be replaced. If you have a washable filter, make sure it is completely dry before placing it back in the air cleaner. When purchasing HEPA filtration units, it is important to note that these tests are to verify not only that the unit is well built, but that it is also installed correctly. But it may not be so important that you feel compelled to buy new filters every 6 months, or whatever the manufacturer recommends. The best way to know for sure if your HEPA filter needs replacing is with a professional test. A technician will spray dispersed oil particles (DOP) onto the filter surface and measure how much passes through.
This will give an accurate reading of how much your filter has been degraded. Increased Allergies and Respiratory Problems If you notice a sudden increase in allergies or respiratory illnesses among residents of your home or workers in a facility, it's often a strong sign that air filters are clogged and can't filter out the particles that aggravate these conditions. HEPACART believes in clearing your air, so not only can you trust us for knowledge and advice, but you can also rely on us to be practical. It is important to ensure that your HEPA filter is properly maintained and replaced when necessary in order to keep your air clean and healthy.