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Extract filter size: 248x183x22 mmSupply filter size: 248x183x22 mmFilter class (EN779): G4+G4Filter quantity in a set: 2 filtersProtection level
Filter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
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Customer Reviews
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We’ve gathered answers to the most common questions about our products and services. If you can’t find an answer here, please contact us directly.
Does using a compatible Brofer filter instead of an original affect my unit’s warranty?


Using a correctly sized, ISO 16890-compliant compatible filter does not affect your Brofer unit's mechanical or heat-exchanger warranty, since filters are a routine consumable part rather than a structural component. Manufacturer warranties typically only require that filters meet the correct class and dimensions, not that they carry the original brand name.
How should I store spare Brofer filters so they stay effective until I install them?


Keep unopened Brofer filters ready for installation by following a few simple storage rules:
- Leave them in their original packaging until you're ready to install
- Store in a dry, room-temperature space
- Keep away from direct sunlight and moisture
Filter media can absorb ambient humidity if left unwrapped for long periods, which slightly reduces its dust-holding capacity before it's even installed.
How often should Brofer filters be replaced?


We recommend the standard 3–6 month interval for Brofer units, checked more frequently in the first year after installation to establish how quickly your specific environment loads the filters. Homes with pets or nearby renovation work should lean toward the 3-month end of that range.
What filter classes are compatible with Brofer units?


Brofer residential units generally accept standard M5 and F7-class filter combinations, consistent with the ISO 16890-rated filtration used across most European heat recovery systems. Both our original-spec and house brand alternatives are cut to the same tolerances, so filtration performance is unaffected by the choice.
How can I find the right filter for my Brofer ventilation unit?


Because Brofer units are supplied in several regional configurations, the safest way to identify your filter is by measuring the extract and supply filter panels directly (length × width × height in mm) and matching them against our size filter. The model code on the unit's front cover label will also narrow down the correct listing.
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