How do you choose the right ventilation filter?

Choosing the right ventilation filter depends on the type of air to be handled and the requirements of the industry. In industrial settings, it is crucial to select a filter that both ensures effective particle filtration or gas filtration and contributes to low pressure drop and stable operation. Important considerations: Which area does the air come from – is it comfort air from people (e.g. offices, schools and hospitals) or industrial air that may also contain other types of dust? What filter class is required? (e.g. ePM1, ePM10, HEPA) Are there requirements for food approval, antistatic materials, moisture resistance or high temperature resistance? What is the air volume and pressure drop in the system? At konfAir, we provide advice on the selection of ventilation filters, including pocketfilters, panel filters, compact filters and carbon filters – adjusted to your system and operating conditions. We can also offer customised filter solutions if standard filters do not meet the requirements.

FILTERS FOR VENTILATION

At konfAir, you receive honest and professional guidance when choosing the right ventilation filters to match your system, its operation, and specific requirements. We assist and collaborate with you to match filter types, dimensions, and filter classes, ensuring stable system performance and making future filter changes effortless.
With more than 50 years of experience, we manufacture and sell high-quality, energy-optimized filters for ventilation systems. With production facilities in both Denmark and Lithuania, we offer short lead times on ventilation and filtration filters for commercial use.

Read here how our customers experience collaborating with konfAir.

Energy optimized filter
Welded and dimensionally stable frames
Moisture-resistant, synthetic filter media

Panel filter

Large standard program
Large filter area – low pressure drop
Robust and moisture-resistant filter media

Compact filter

Shape-stable
Depth filtration
Increased airflow

Pipe filter

Customized sizes
Optimal use of filter area
Fast and flexible delivery

Filter media

Effective as a pre-filter
Easy to customise
Fast and flexible delivery

Filter mats

Effective as a pre-filter
Available in various qualities
Can be customized in all sizes

V-belts

High quality
Wide product range
Fast and flexible delivery

Inlet bags

Optimal air circulation
Customized design
Several different permeabilities

Hepa filter

Low airflow
Large filter area
High filtration efficiency

Metal filter

Robust material
Moisture resistant
Effective against odor problems

Carbon filter

Minimizes odor problems
Contain activated carbon
Eliminates ozone and other gases

CHOOSING THE RIGHT VENTILATION FILTER

When selecting filters for a customer's ventilation system, it is all about ensuring stable operation and a healthy indoor climate.

The right filter is the one that fits the specific unit, the environment, and the technical requirements. Choosing correctly prevents purchasing errors and ensures a solution that actually works.

If you are new to the world of ventilation, consider the following:

1. START WITH THE SYSTEM AND PLACEMENT

Is the filter for intake or exhaust?
Will it be used as a pre-filter or a main filter?
Note: Placement influences both the required filter type and class.

2. CHECK DIMENSIONS AND FILTER TYPE

Dimensions (WxHxD) must be precise. In addition to measurements, note the filter type (e.g., panel, pocketfilter, or compact filter). If in doubt, simply take a photo of the label on the old filter.

3. DO YOU KNOW THE FILTER CLASS? (ISO 16890)

If you have specific filter class requirements, please let us know.

This determines the filter’s dust-holding capacity. In high-load environments, choosing a filter with high dust capacity is a smart investment, as it extends the life span.

REMEMBER

A cheaper filter is not always the most cost-effective solution. Pressure drop and service life directly impact energy consumption and replacement frequency. The goal is a solution that provides operational peace of mind and long-term economic benefits.

Our customer center

is always ready to help you if you have any questions.

CORRECT VENTILATION

Today, proper ventilation is a great part of a healthy indoor climate. We work more efficiently and experience fewer sick days when the indoor environment is optimal.

The right room temperature and correct ventilation can significantly reduce sick leave. Investing in a good indoor climate pays off, and we are happy to provide guidance on projects of all sizes to find the best solution for your customer.

Questions our customer gets from their customers

1. What is ventilation in industrial facilities?

Ventilation is the process in which warm, humid and polluted air is removed from a room and replaced with fresh air. In industrial facilities, this typically happens via a mechanical ventilation system, which ensures controlled air exchange.

Industrial ventilation is not only important for ensuring fresh air – it also plays a crucial role in terms of working environment, process stability and safety. At konfAir, we have extensive experience in supplying filters and solutions for ventilation systems in the industry, where there are high demands for both air quality and energy efficiency.

2. Why is industrial ventilation important for the working environment and production?

Industrial ventilation is essential to ensure a healthy and safe working environment. When air pollution from, for example, dust, fumes, smoke or heat is not effectively removed, it can lead to health problems, reduced productivity and poor indoor climate.

A well-designed industrial ventilation system ensures:

Good air quality and comfort for employees
Effective removal of process emissions (e.g. dust, gases and particles)
Prevention of heat build-up and moisture damage

Ventilation and filtration are closely connected. A well-functioning ventilation system must be equipped with the right filters to capture unwanted particles and protect both people and machines. At konfAir, we supply filters for ventilation systems that are optimized for industrial conditions.

3. How often should industrial ventilation filters be replaced?

Replacement intervals depend on operating hours, dust load, the process environment, and the filter type. In industrial settings, loads vary greatly; therefore, the best approach is a fixed maintenance routine combined with pressure drop monitoring.

Typical signs that a ventilation filter should be replaced:

Increasing pressure drop across the filter (measured via differential pressure).
Reduced airflow and poorer ventilation in specific zones/rooms.
Higher energy consumption because fans have to work harder.
Visible dirt, dust accumulation, or odor issues.
Alarms/error messages from the Ventilation Management System (BMS).

By replacing filters regularly, you protect both the ventilation system and the indoor climate while avoiding unnecessary energy waste and downtime.

At konfAir, we are happy to help you plan fixed replacement intervals and identify the correct products for re-ordering, ensuring you quickly get the right filters for your customer.

4. What is the difference between mechanical and natural ventilation in the industry?

The difference between mechanical and natural ventilation lies in how the air is exchanged:

Natural ventilation occurs through windows, vents and thermal buoyancy. It is a simple and energy-saving solution, but can be insufficient in industrial buildings with high demands for air quality and air exchange.
Mechanical ventilation uses fans and ducts to control the airflow. This provides controlled and consistent air exchange, regardless of season or weather conditions, and is often necessary in production halls, warehouses, technical facilities, offices, hospitals and schools.

At konfAir, we support mechanical ventilation systems with high-quality filters that are adapted to both energy needs and air requirements.