AHU Filters: what are they?

What is a AHU filter?

Indoor air quality has never been as crucial as it is today. With the external world facing unprecedented environmental challenges and rising air pollution, maintaining a healthy indoor environment is essential.

Especially when we understand the impact of PM1 on our health.

This is where the Air Handling Unit (also known as AHU) comes into play.

In this article, we offer you a detailed overview of what an Air Handling Unit is and its essential components: AHU filters.

What is an AHU, or Air Handling Unit?

The different types of AHUs

We can mention two main types of AHUs:

• The single flow.
• The double flow.

Each of these AHUs has its specificities and applications according to the ventilation needs and air quality of an indoor space.

On one hand, the single-flow AHU focuses on the treatment of incoming or outgoing air.

In comparison, the double-flow AHU offers more complex and dynamic management of the air circulating in the building. This air handling unit can notably mix all the airflows of a building: fresh air, return air, treated air, and exhausted air.

Moreover, it is also necessary to make a clear distinction between an AHU and a Mechanical Ventilation with Heat Recovery (MVHR), which allows for the evacuation of air from an indoor space. The difference between these two types of installation lies mainly in the amount of air that can be treated.

The role of AHU filters

AHU filters ensure the purity of the air we breathe. Within an AHU, filters capture and retain fine particles, pollutants, dust, bacteria, pollen, spores, and molds.

Choosing the right filter is therefore a crucial decision for your health, but also for the filtration efficiency of your Air Handling Unit.

There are indeed several types of filters, categorized according to the ISO 16890 standard.

Depending on their efficiency, we can mention filters:

• ISO Coarse,
• ISO ePM10,
• ISO ePM2.5,
• ISO ePM1.

This classification allows building managers and technicians to choose a filter according to the size of the particles they wish to filter. For example, an ISO ePM1 filter is capable of capturing extremely fine particles, such as tobacco smoke and aerosols.

Deltrian, a key player in air filtration since 1967, can offer you filters belonging to each of these categories. Contact us via the form below for more information.

Furthermore, beyond filtering the air, AHU filters also protect the physical integrity of the AHU itself. By preventing the internal components such as heat exchangers and fans from becoming clogged, filters extend the life of the equipment and avoid costly repairs.

Maintaining and optimizing your AHU

To conclude, an AHU requires regular maintenance to provide optimal operation over the long term. Indeed, your AHU filters must be cleaned and replaced at regular intervals to avoid the accumulation of dirt and a loss of efficiency.

Moreover, by ensuring maintenance, you are sure to avoid problems and breakdowns that can prove costly.

If you choose Deltrian, we can not only provide you with filters that meet your needs, but we can also guarantee maintenance to maximize the lifespan of your AHU.