ULPA filters

The Ultra-Low Particulate Air filters function similarly to a HEPA filter but are more efficient. It can remove 99.99% of 0.128µm or larger particles. Since the function of ULPA filters is similar to HEPA filters, the maintenance and replacement procedures are roughly the same. The real difference is that ULPA filters are usually much more expensive than HEPA filters, so your maintenance plan is more important. Therefore, make sure to schedule regular maintenance and keep leak tests and leak repairs.