Additional equipment for recoVAIR heat recovery units: filter set F9 and G4 260/360/4 (2 pcs) 0020180873

Filter set F9 and G4 is an original accessory for Vaillant recoVAIR 260/4 and 360/4 heat‑recovery ventilators, designed for direct tool‑free replacement. It consists of two filters: one for the supply‑air channel (F9), the other for the exhaust channel (G4) – each sold singly, together 2 pieces per package.

Filter F9, ISO ePM1 class (90 % efficiency in removing fine particles) captures pollen, allergens and fine dust – a key element for indoor air quality, especially for allergies or high‑dust‑load environments. Filter G4, ISO Coarse class (≈ 65–90 %), acts as a pre‑filter, protecting the heat exchanger and fans from larger contaminants such as dust, fibers or external dust.

The cooperation of these two filtration levels maintains constant system performance and prevents