When it comes to air purification, there are two main types of filters: HEPA and electrostatic. HEPA air purifiers typically have a first-pass efficiency rate of 87 to 99 percent, which means that they capture more particles faster than their electrostatic counterparts. On the other hand, electrostatic air purifiers have a first-pass efficiency rating of 60 to 80 percent and require more time to improve indoor air quality. In general, HEPA air purifiers have a clear advantage over electrostatic air purifiers, making them the superior choice. The term true HEPA indicates that a filter can capture 99.97% of airborne particles as small as 0.3 microns.
This type of filter also has a higher first-pass efficiency rate than its electrostatic counterpart, as it provides an efficiency of 87 to 99% the first time air passes through it. While HEPA filters capture particles with filter materials, electrostatic air purifiers trap charged particles. A HEPA filter is a type of pleated filter that removes pollutants from the air, but it cannot eradicate gaseous pollutants like an activated carbon filter would. HEPA purifiers are generally thought to be the most efficient air purifiers, although an electrostatic and HEPA air filter can further improve indoor air quality. These air purifiers use the HEPA filter to filter 99.97% of particles that are 0.3 microns or larger.
HEPA air purifiers can work at any level and still trap between 87 and 99 percent of airborne particles in the first air exchange. Some air purifier manufacturers use a combined filter that uses electrostatic precipitators to charge the particles and increase their weight, so that they can be more easily removed with a HEPA filter. Both HEPA and electrostatic air purifiers remove particulates from the air, but their processes for removing them vary significantly. With a HEPA filter, particulates are removed during the first passage of air through the filtration system. On the contrary, ensuring the performance of electrostatic air purifiers requires more time since it involves replacing the old filter; a quick and simple task with the right air purification system.
Dry ESP is the type primarily used in electrostatic air purifiers, and these use vibrations to remove particles once they have been removed from the air. These air purification systems use replaceable air filters that are easy to remove and replace, especially if your brand offers a filter subscription plan. In conclusion, when it comes to choosing an effective air purifier for your home or office, HEPA filters are generally considered superior to electrostatic filters due to their higher first-pass efficiency rate and ease of maintenance. Take a look at some of our best-selling HEPA air purifiers shown below to learn how they can help you enjoy cleaner indoor air.