F8 Filters

About F8 Filters

F8 filters are part of the former EN 779 classification system and are recognized as higher-level fine filters within legacy HVAC terminology. They are typically selected for air handling systems requiring stronger fine particulate removal than F7, while still remaining below HEPA-level filtration.

Even though ISO 16890 has replaced EN 779, F8 remains a useful and commercially relevant term in many replacement and engineering contexts. These filters are commonly used where air cleanliness expectations are elevated and finer dust control is needed.

Typical Applications

F8 filters are commonly used in:

• hospitals and healthcare support environments
• commercial HVAC systems
• technical rooms and equipment areas
• laboratories and controlled support areas
• higher-performance air handling units
• buildings requiring improved fine particle control

Key Features

• higher fine filtration than F7
• improved indoor air quality performance
• suitable for demanding HVAC applications
• supports cleaner airflow and equipment protection
• recognized legacy term in replacement markets

F8 Filters and ISO 16890

F8 is a legacy EN 779 grade often associated with ISO ePM2.5 and, in some cases, more efficient ISO ePM1 performance, depending on actual filter test results.

As with other EN 779 grades, this is not a strict one-to-one equivalence. F8 should be treated as a legacy specification term that helps customers identify suitable filters in the newer ISO 16890 framework.

Selection Considerations

F8 filters are typically selected when applications require stronger fine particle control than F7 filters, especially in buildings with higher air quality expectations or more sensitive operating conditions. They are often used in systems where cleaner air and better protection for downstream components are priorities.

FAQ

What is an F8 filter?

An F8 filter is a legacy EN 779 fine filter grade used in HVAC systems requiring higher fine particle removal.

Is F8 still used?

Yes. F8 is still widely recognized in replacement and legacy specification markets, although EN 779 has been replaced by ISO 16890.

What is the ISO equivalent of F8?

F8 is commonly associated with stronger ISO ePM2.5 performance and may overlap with some ISO ePM1 ranges, depending on actual test results.

Where are F8 filters used?

They are commonly used in hospitals, technical rooms, laboratories, and high-performance HVAC systems.