New posts

ePM10 Filter Class: Features and How to Choose the Right Filter

date_range 09 December 2024
thumb_up_alt 0

Filters in the ePM10 class must capture at least 50% of PM10 particles (0.3–10 μm) during testing. For instance, a filter rated as ePM10 55% captures more than 55% of PM10 particles. The term "ePM" stands for Efficiency of Particulate Matter.

These filters are especially useful in areas with high PM10 pollution and can trap allergens like pollen, improving indoor air quality.

Read More
ePM1 Filter Class: Key Features and When to Choose It

date_range 21 November 2024
thumb_up_alt 1

Filters in the ePM1 class must capture at least 50% of PM1 particles (0.3–1 μm) during testing. For example, a filter rated as ePM1 70% captures more than 70% of PM1 particles. The term ePM stands for Efficiency of Particulate Matter.

These filters effectively remove fine solid particles, ensuring healthier indoor air. They are the most efficient filters in the ISO 16890 classification.

Read More
M5 Filter Class: Features and Choosing the Right Filter

date_range 07 November 2024
thumb_up_alt 2

An M5 filter helps protect your ventilation system—especially the heat exchanger—from clogging, while also filtering out PM10 particles common in many European cities. Positioned between G4 and F7 filters, the M5 offers more effective filtration than G4 with lower energy use and a longer lifespan than F7.

Read More

G4 Filter Class: Characteristics and When to Choose It

date_range 16 October 2024

Filters are categorized based on their efficiency, and the G4 filter belongs to the "coarse filtration" category. These filters are designed to capture larger particles, typically ranging from 10 to 50 microns in size, helping to protect ventilation systems from dust, debris, and other contaminants.

Why Choose a G4 Filter?

G4 filters are commonly used because they offer:

Lower airflow resistance compared to higher efficiency filters like M5 or F7, meaning less energy is needed to run your ventilation system.
Longer lifespan, as they are less likely to clog quickly.

What Does a G4 Filter Capture?

G4 filters are effective at trapping medium-sized dust particles, sand, insects, lint, and even some larger pollen particles. They provide sufficient filtration to keep ventilation systems running smoothly and cleanly.

Common Uses for G4 Filters

Due to their low resistance and efficiency, G4 filters are often used in:

Exhaust air filtration: Standard in many air handling units (e.g., Brink, Vallox, Zehnder) to protect heat exchangers from clogging.

Dust protection in air ducts: Installed in extract air valves to prevent dust build-up in ducts.

Pre-filters in ventilation systems: They catch the majority of contaminants, extending the life of higher-grade supply air filters like F7-F9. These can be installed in separate filter boxes or directly in the unit.

Main supply air filters: In low-pollution areas, where the air quality is good and occupants are not sensitive to pollen, a G4 filter can be an excellent long-lasting choice without increasing energy use.

When to Choose a G4+G4 Filter Set

Consider the G4+G4 filter set for your air handling unit if:

No one in your household suffers from hay fever.
There are no asthma sufferers or people with chronic respiratory conditions in the home.
Your home is away from busy roads or streets.
You live in a suburban area with little pollution and where neighbors don’t use solid fuels for heating.
There is no smog in your area.