Replacement Filters for Brofer

Brofer RDCD filters: choose the size and configuration

RDCD25 and RDCD40/50 require different formats. Within these families, the catalogue includes G4 + G4 sets and combinations with one F7 filter plus two G4 elements.

Compare the listed replacements

• Brofer RDCD40SK / RDCD50SK
  Compatible Filter Set ePM1 60% (F7) + 2 × ISO Coarse (G4), 240 × 199 mm
• Brofer RDCD40SK / RDCD50SK — G4 + G4
  Compatible Filter Set 2 × ISO Coarse (G4 + G4), 240 × 199 × 22 mm
• Brofer RDCD25SK / RDCD25SH Series
  Compatible Filter Set ePM1 60% (F7) + 2 × ISO Coarse (G4), 216 × 199 mm
• Brofer RDCD25SK / RDCD25SH Series — G4 + G4
  Compatible Filter Set 2 × ISO Coarse (G4 + G4), 216 × 199 × 22 mm

Understanding F7 and G4

F7 is a former fine-filter class and G4 a coarse-filter class. Use the ISO classification declared for each replacement. Read the differences between F7 and G4 filters. Before changing class, check that the unit supports the configuration and resistance to airflow.

Why do some Brofer sets contain three elements?

F7 + 2 × G4 contains an additional element compared with G4 + G4. Check the unit's filter arrangement before changing the configuration.

How often should Brofer filters be replaced?

ZenAero's guide uses 4–6 months as an orientation for many residential installations, not a universal interval for this set. Follow the manual and assess each element and the air conditions; a damaged or heavily loaded filter may need earlier replacement. See replacement intervals and how to change ventilation filters.

These are ZenAero compatible replacements, not original Brofer filters. Check the supported models, pack contents and availability on each product page. For another brand, browse the ventilation filter catalogue.