Air ventilation filters act as a “gateway” between outdoor and indoor air — they capture impurities, dust, pollen, mold spores, and other particles before the air circulates inside the building. A properly functioning filter protects the building, the ventilation unit, and its occupants. In contrast, a poor-quality or incorrectly chosen filter can lead to problems ranging from reduced energy efficiency to health risks.

“Original” or “tested” filters are those designed and approved by the manufacturer for use in a specific ventilation unit. They meet strict quality and performance requirements such as air resistance, tightness, and filtration efficiency standards.

Cheaper imitation filters that claim to be compatible may look similar, but:

Indoor air quality is a key factor in overall well-being. A high-quality filter reduces exposure to dust, pollen, mold spores, and fine particles. This is especially important for people with allergies, asthma, or families with children.
Studies show that effective air filtration improves breathing air quality and can reduce respiratory symptoms by as much as 30–50%.

A properly sized and high-quality filter helps the ventilation unit operate at optimal efficiency. It keeps pressure loss low, prevents fan overload, and reduces energy consumption. Over time, this also means lower maintenance costs and a longer equipment lifespan.

Many wonder why original filters are often significantly more expensive than so-called compatible alternatives. The price difference is no accident — it reflects quality, testing, and safety.

Each original filter undergoes the manufacturer’s quality assurance process and is tested according to recognized standards (e.g., ISO 16890, EN 779). This ensures precise filtration efficiency, airflow resistance, and tightness. Copies are often insufficiently tested — or not tested at all.

Original filters are made from durable materials that maintain their shape and filtration performance over time — even in humid or warm environments. Cheap filters may collapse, tear, or quickly lose their properties.

Every original filter is designed to fit perfectly in its intended place, ensuring that air passes through the filter surface rather than around it. This improves system efficiency and prevents leakage of impurities.

Equipment manufacturers invest heavily in filter technology to enhance energy efficiency and air quality. Copy manufacturers exploit these innovations without bearing the same costs or accountability for performance.

Most manufacturers require the use of original parts to maintain warranty coverage. If equipment is damaged due to the use of a non-original filter, the warranty typically does not cover repair costs.

In short: an original filter is an investment in reliability, safety, and long-lasting performance — not just an expense.

Original and tested filters keep your ventilation unit efficient, quiet, and energy-saving. They protect your health, reduce maintenance needs, and ensure clean indoor air all year round.
Although original filters cost a bit more, they pay for themselves through better air quality, lower energy bills, and dependable operation.