HEPA and ULPA filters are used when you need the highest filtration available. Both types of filters can remove fine particles from the air. Before buying a HEPA filter housing for your air filtration system, compare the features of HEPA and ULPA. Each filter has distinct characteristics and benefits. Here is what you should know.
What Are HEPA Filters?
A high-efficiency particulate air (HEPA) filter can trap at least 99.97% of airborne particles. These particles include pollen, dust, bacteria, and any other types of airborne particles measuring 0.3 microns or larger.
What Are ULPA Filters?
An ultra-low particulate air (ULPA) filter is made for use in commercial and industrial environments. These filters trap the smallest of particles. ULPA filters can stop at least 99.999% of airborne particulates as it traps particles measuring just 0.12 microns.
HEPA vs. ULPA – What’s the Difference?
HEPA and ULPA filters are made from tiny strands of microfibers. ULPA filters trap more particles due to the density of the material. However, the density of the ULPA filter reduces airflow. You need more power to move air.
Reducing the airflow of the filtration system also limits the collection of particulates. A room with a ULPA filter may be less effective at limiting the particulate concentration compared to a room using a HEPA filter.
The density of the material and the need for stronger air circulation may shorten the life of the ULPA filter. Most ULPA filters have lifespans of five to eight years, while HEPA filters can last up to 10 years.
HEPA vs. ULPA – Which Should You Use?
ULPA filters are capable of trapping smaller particles compared to HEPA filters. However, HEPA filters often offer a longer service life and require less air power to move air through the filter. A HEPA filter may offer a more efficient choice, depending on the application.
Both options are typically loaded into the air filter housing and fixed in place using springs. Some designs also include side access doors or bag-in/bag-out (BIBO) options.
Companies that supply air filtration systems can help you compare options and determine the best solution for your commercial or industrial setting.