F5

F5 filters are commonly introduced when basic pre-filtration is no longer sufficient and improved air cleanliness is required.

They help reduce the concentration of finer dust particles that can affect indoor environments, equipment performance, and downstream filtration stages.

As an intermediate filtration level, F5 filters support better air quality while keeping system resistance within acceptable limits.

Typical Applications

F5 air filters are used in ventilation systems where higher air cleanliness is required compared to G-class filtration, but HEPA-level efficiency is not necessary.

Common applications include:

• Commercial buildings with increased indoor air quality requirements

• Office HVAC systems

• Industrial facilities with moderate fine dust levels

• Secondary filtration stages following G4 pre-filters

• Supply air systems serving occupied spaces

In these applications, F5 filters contribute to cleaner air delivery and improved system performance.

Performance Highlights

F5 filters are designed to provide reliable fine particle control without significantly increasing system pressure drop.

Key performance characteristics include:

• Improved capture of fine airborne particles

• Balanced pressure drop suitable for HVAC operation

• Stable airflow during extended service life

• Enhanced protection for downstream filters

• Suitable for continuous ventilation systems

These characteristics make F5 filters a practical choice for systems upgrading from coarse to fine filtration.

FAQ

When should an F5 filter be used instead of a G4 filter?

An F5 filter is typically selected when a ventilation system requires improved fine particle removal beyond what G4 pre-filtration can provide, such as in occupied commercial spaces or offices.

Can F5 filters be used as the final filtration stage?

In many comfort HVAC applications, F5 filters can serve as the final filtration stage. Environments with higher cleanliness requirements may need higher-efficiency F-class filters.

Are F5 filters suitable for continuous HVAC operation?

Yes. F5 filters are designed for continuous operation and are commonly used in systems that run for long periods without interruption.

How do F5 filters work with multi-stage filtration systems?

F5 filters are often installed downstream of G4 filters to improve air cleanliness while reducing the dust load on higher-efficiency filtration stages.