Ventilair Calma - F7 Filter

The Ventilair Calma F7 Filter is a replacement and upgrade filter designed specifically for Ventilair Calma heat recovery ventilation units. It is sold individually and is installed within the unit to support enhanced supply air filtration.

F7 is a recognised European filter classification, historically defined under EN 779 and now broadly aligned with ISO 16890 standards. In practical terms, F7-grade filters are designed to capture a high proportion of fine airborne particles, including smaller dust fractions that may pass through basic coarse filters.

Within a heat recovery ventilator, filtration protects both indoor air quality and the internal components of the system. By fitting an F7 filter, the Ventilair Calma can provide a higher level of fine particle removal on the supply air side, helping to improve overall indoor air conditions.

It is important to note that each Ventilair Calma unit requires two filters. These must be installed as a matched set within the system to maintain balanced airflow and consistent performance. When replacing filters, both should be changed at the same time to avoid uneven resistance or reduced system efficiency.

F7 filtration is particularly suitable in:

• Urban or roadside environments

• Areas with elevated external dust levels

• Residential or light commercial buildings where improved air cleanliness is desired

Regular inspection and timely replacement are essential. As filters load with captured particles, airflow resistance increases. Replacing filters at appropriate intervals helps maintain ventilation performance and system longevity.

The Ventilair Calma F7 Filter is designed exclusively for the Calma range and is not a universal ventilation filter. Always confirm model compatibility before purchase.

If you are maintaining or upgrading your Ventilair Calma heat recovery system, this F7 filter provides a practical solution for enhanced fine particle filtration.