MVHR filters

Most Airobot AIRBOX installations run on a two-stage, ISO 16890-rated filter set:

• Extract side — coarse M5-class filter
• Supply side — finer F7/ePM1 filter

Because Airobot's sensors continuously adjust airflow based on real-time air quality, filters can load up faster during high-demand periods such as parties, cooking or humid weather, so it's worth checking them slightly more often than the standard 3–6 month interval.

Yes. Airobot's demand-controlled algorithm relies on stable airflow readings to interpret its CO2 and humidity sensors correctly. A clogged filter reduces airflow and can cause the system to run at higher fan speeds than necessary, increasing both noise and energy use — replacing filters on schedule keeps the smart control logic accurate.

The full model code is usually printed in one of a few places on your unit:

• On a nameplate on the unit's front or side panel, often near the power connection or control panel
• On a sticker inside the front cover, next to the filter compartment
• In your installation documentation or original purchase invoice

Any of these will give you the exact code needed to match the correct replacement filter, rather than relying on the series name alone.

Not as a general rule. Komfovent's Domekt, Verso and Kompakt (REGO/RECU) ranges each use different filter housing shapes and sizes, and even within the same series, filter dimensions can vary between compact and larger-capacity variants. Always match by your exact model code or measured filter dimensions rather than assuming a filter from one model will fit another.

The standard guidance for Komfovent units is every 3–6 months, in line with typical ISO 16890 filter loading. Consider checking sooner if:

• You have pets or nearby renovation or construction dust
• A household member is allergy-sensitive, especially during high-pollen season
• The property is in an urban area near busy roads

Most Domekt and Verso controllers also display a maintenance reminder based on running hours or pressure drop — treat it as a useful prompt alongside the calendar interval, not a replacement for it.

Both are built to meet the same requirements, but they differ in a few practical ways:

• Certification — both original and our compatible filters are tested to ISO 16890 filtration classes
• Manufacturing — Komfovent's originals are produced at their own facility in Lithuania, while our compatible alternatives are made elsewhere in the EU to the same standard
• Price — compatible filters are typically priced well below the Lithuanian-made originals
• Fit — both are cut to the exact Domekt, Verso or Kompakt housing dimensions

Using a correctly sized, correctly classed compatible filter does not affect your unit's warranty, since filters are a routine consumable part rather than a structural component.

Yes — on Domekt, Verso and Kompakt units, filter replacement is designed to be tool-free:

1. Open the front access panel or filter compartment cover
2. Note the airflow direction marked on the old filter's frame
3. Slide out the old filter and wipe down the housing if it's dusty
4. Insert the new filter in the same orientation and close the panel

The process typically takes just a few minutes, and most units don't require powering down first — check your manual if you're unsure.

Yes — our ISO 16890-certified compatible filters for Airobot AIRBOX units typically cost noticeably less than manufacturer-branded originals while matching the same M5/F7 filtration classes and dimensions. Because the filter media and housing size are identical, there's no drop in filtration performance or airflow, only in price.

Many AIRBOX housings can accommodate a higher-grade F9 or H13 HEPA-class filter on the supply side without modification, capturing significantly finer particles than the standard F7/ePM1 filter. This is worth considering for households with severe allergies or asthma, though it's worth checking your specific model's pressure-drop tolerance first, since denser filter media can slightly increase fan load.

We stock replacement filter sets for the Atrea Duplex range, the brand's most widely installed residential and light-commercial MVHR series across Central and Eastern Europe. If your unit carries a Duplex nameplate but you're unsure of the exact variant, measuring the filter's length, width and height is the most reliable way to match it in our catalogue.

If a filter you've ordered turns out not to match your Duplex variant, we accept returns or exchanges as long as the filter is unused and in its original packaging. Sending us your exact Duplex model code or the measured filter dimensions upfront is the easiest way to avoid a mismatch in the first place.

Some Atrea Duplex variants support an additional activated carbon filter layer on the supply side, which helps absorb traffic fumes, cooking odours and general VOCs before they enter the home. It's typically fitted alongside — not instead of — the standard M5/F7 filtration, so check your unit's housing depth before ordering.

Many Atrea Duplex units accept both standard M5 and higher-grade F7/ePM1 filters in the same housing without any modification. If you or a family member suffers from pollen or dust allergies, upgrading the supply-side filter to F7 is one of the simplest performance upgrades available for these units.

Atrea's guidance for Duplex filters covers three checkpoints:

• Check filters every 3 months
• Replace them at least twice a year, even if they still look clean
• Watch for the RD5/RD6 controller's on-screen maintenance reminder, which triggers once pressure drop across the filter rises

Following that on-screen prompt rather than a fixed calendar date gives the most accurate result for your specific air quality conditions.

Blauberg produces a broad range of residential and commercial ventilation units, so the model code on the unit's rating plate (usually near the electrical connection panel) is the quickest way to identify the correct filter set. If the plate is missing, filter dimensions in millimetres will narrow it down within our catalogue.

No — most Blauberg residential units are designed for tool-free filter access:

1. Open the front or side panel by hand
2. Slide the old filter out
3. Slide the new filter in and close the panel

The whole process typically takes a few minutes and doesn't require an installer visit.

Our ISO 16890-certified compatible filters for Blauberg units are generally priced well below manufacturer-branded originals, since you're not paying a premium for brand packaging. Filtration class, dimensions and airflow performance remain matched to the OEM specification, so the savings don't come at the cost of air quality.

Blauberg has periodically updated internal filter housings across production batches while keeping the same commercial model name. If your replacement filter doesn't fit despite matching the nameplate, checking the physical filter dimensions rather than relying on the model number alone will get you the correct fit.

Blauberg's residential heat recovery units typically ship with a G4 coarse filter on the extract side and an M5 filter on the supply side, giving solid protection against dust and larger particles at an accessible price point. Upgrading the supply filter to F7 is possible on most models for households wanting stronger allergen filtration.

We carry replacement filters for Brink's most common residential lines:

• Renovent Excellent
• Renovent Sky
• Flair

All three are widely installed across the Netherlands and Belgium, with the model name generally printed on a label inside the front cover, next to the filter compartment itself.

We ship Brink filters across the Netherlands and Belgium, with most orders arriving within a few business days. Ordering slightly ahead of your next scheduled filter change avoids running the unit on a saturated filter while you wait.

No — filter dimensions vary between the Renovent Excellent, Renovent Sky and Flair series, even though all three use the same M5/F7 filtration logic. Always match by your exact series and model code, or measure your current filter directly, rather than assuming size compatibility across the Brink range.

The warning light on Renovent and Flair units is triggered by a timer or pressure sensor, not by the filter reaching some measurable "empty" point — it's a maintenance reminder based on typical saturation timing. It's still worth a quick visual check before ordering a replacement, especially if the unit was installed recently.

Brink units are typically fitted with an M5 filter for coarse particles and an F7 (ePM1) filter for fine dust and pollen on the incoming air side, in line with Dutch indoor air quality guidance. Because Brink units are often installed in newer, well-sealed homes, filters can last closer to the 6-month mark unless the property is near a busy road or construction site.

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.

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.

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.

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.

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.

Defro is best known for biomass heating, but its Defro AIR range extends into residential mechanical ventilation with heat recovery, often installed alongside Defro heating equipment in the same property. Filters for Defro AIR units are sized and classed the same way as other MVHR systems, so identifying your model or measuring the filter directly works just as reliably.

Yes, several ComfoAir models can accept an H13 HEPA-grade supply filter in place of the standard F7/ePM1, giving a meaningfully higher level of fine particulate and allergen capture for severe allergy or asthma sufferers. Check your specific Q-model's fan capacity first, since HEPA-grade media has higher airflow resistance than standard filtration.

Filter dimensions scale with the Q-series model number, so a Q350 takes a different size than a Q450 or Q600 even though all three use the same M5(ePM10)/F7(ePM1) filtration logic. Always confirm your exact Q-model on the front panel before ordering rather than assuming size compatibility across the range.

Because ComfoAir's F7-class supply filter is specifically designed to capture fine airborne particles including pollen, it can load up faster during spring and early summer than during the rest of the year. Checking filters monthly during peak pollen season, even within the standard 3–6 month replacement window, helps maintain steady airflow and allergy protection.

Zehnder ComfoAir units are typically fitted with two filter classes as standard:

• M5 (ePM10) extract filter
• F7 (ePM1) supply filter

This reflects the brand's strong focus on Passive House-grade air quality — many allergy-sensitive households upgrade further where the housing supports higher-grade filtration.

The exact ComfoAir model — such as Q350, Q450 or Q600 — is printed on the unit's front panel and is the fastest way to match the correct filter set in our catalogue. If the label is missing, measuring the extract and supply filter panels directly will identify the right size just as reliably.