Zehnder

Here you’ll find replacement filters for your Zehnder MVHR unit – as original Zehnder filters or as our tested house brand. We stock filter sets for the ComfoAir Q, ComfoAir E, ComfoAir 350/500/550, ComfoD, ComfoAir 70 to 200, ComfoSpot 50 and EVO series, as well as the Enervent units Pinion and Salla (by Zehnder). All filters are made in the EU.

Find the right Zehnder filter by series

Zehnder uses different filter sizes depending on the unit generation. Choose your series below – the model name is printed on the rating plate of your ventilation unit.

Zehnder ComfoAir Q350, Q450, Q600 and ComfoAir E350

The current ComfoAir Q generation and the ComfoAir E350 use the same filter set. Available as G4+G4 (standard), G4+F7 (fine filter on the supply side, recommended for allergy sufferers) and as an activated carbon set G4+G4(AC) against outdoor odours.
→ Filters for ComfoAir Q350 / Q450 / Q600 · Filters for ComfoAir E350

Zehnder ComfoAir 350, 500 and 550

The previous generation ComfoAir 350 / 500 / 550 (also “ComfoAir 350 Luxe”) uses one shared filter set – as G4+G4 or G4+F7, original or house brand.
→ Filters for ComfoAir 350 / 500 / 550

Zehnder ComfoD 350, 450 and 550

For the ComfoD 350 / 450 / 550 units, the filter set is available as G4+G4 and G4+F7, original and house brand.
→ Filters for ComfoD 350 / 450 / 550

Zehnder ComfoAir Standard 300 / 375

G4+G4 and G4+F7 filter sets for the ComfoAir Standard 300 and 375, original and house brand.
→ Filters for ComfoAir Standard 300 / 375

Compact units: ComfoAir 70, 160, 180 and 200

The smaller units for flats and single rooms each have their own filter dimensions:

• ComfoAir 70 – G4+F7 filter set
• ComfoAir 160 – G4+G4 and G4+F7
• ComfoAir 180 – G4+G4 and G4+F7
• ComfoAir 200 – G4+G4 and G4+F7

Zehnder ComfoSpot 50

Decentralised ventilation unit for single rooms – G4+F7 filter set (original).
→ Filters for ComfoSpot 50

Zehnder EVO (identical to Siber EVO)

The EVO units are also sold under the Siber name and use the same filters. There are two filter sizes: for EVO 1/2 and for EVO 3/4, each as G4+G4 or G4+F7.
→ Filters for EVO 1/2 · Filters for EVO 3/4

Enervent by Zehnder: Pinion and Salla

For the Enervent units of the Zehnder Group we stock the Pinion M5+F7 filter set, and for Salla (Compact) the M5+F7 filter set and an F7+F7 activated carbon set.
→ Filters for Pinion · Filters for Salla (Compact)

Your unit carries a different brand name or you can’t find your model here? Send us the details from the rating plate – we’ll check which filter set fits.

How to choose the right filter for your Zehnder unit

1. Check the rating plate: The model name (e.g. “ComfoAir Q350” or “ComfoD 350”) is on the rating plate on the unit’s casing. Suffixes such as the connection side (left/right) usually don’t change the filter set – the series is what matters.
2. Compare your old filters: Dimensions and filter class are usually printed on the filter frame. Compare them with the details on the product page.
3. Choose the filter class: G4+G4 is the standard fit. With G4+F7 the supply air is filtered much more finely – useful for pollen allergies, near busy roads or in the city.

What do G4, F7 and activated carbon mean?

• G4 (ISO Coarse): Coarse filter for the extract air and as the standard supply filter. It captures house dust, fibres, insects and coarse pollen and protects the heat exchanger and fans.
• F7 (ISO ePM1): Fine filter for the supply air. It also removes very fine particles such as fine dust, soot and most pollen from the outdoor air.
• Activated carbon filter (AC): additionally binds odours and gaseous substances from the outdoor air, e.g. from farming, wood smoke or traffic.

More in our guide: MVHR filter classes explained.

Original Zehnder filters or house brand?

Original Zehnder filters are made in Zehnder Group plants in Europe and match the original equipment of your unit exactly. Our house brand is also made in the EU, has the same dimensions and filter classes and is a lower-cost alternative for regular filter changes. Both fit your unit without modification. What to look out for with alternative filters: Filter alternatives or original filters?

When should you replace Zehnder filters?

We recommend replacing the filters every 3 to 6 months. Many Zehnder units show a filter reminder on the control panel or in the app. Replace them sooner if:

• your home is near a busy road, fields or a building site,
• someone in the household has a pollen allergy (before the pollen season in spring),
• the filters are visibly grey or the unit runs louder than usual.

A proven rhythm in Austria: one change before the heating season in autumn and one before the pollen season in spring. Tip: order two sets at once and you’ll already have the next change at home.

Changing Zehnder filters – step by step

1. Switch off the ventilation unit at the control panel or set it to filter change mode.
2. Open the filter covers on the unit and pull out the old filters.
3. Note the direction of installation: the fine filter (F7) always goes on the supply side (outdoor air).
4. Push the new filters in as far as they go and close the covers.
5. Switch the unit back on and reset the filter counter (on the display or in the app).

Illustrated instructions for your model are on every product page under the “How to change” tab.

Why buy Zehnder filters from Filter Markt?

• Filter sets for all common Zehnder series – original and house brand
• Filters made in the EU, with dimensions on every product page
• Personal help choosing the right filter: Contact us
• Loyalty points on every order

All brands at a glance: MVHR filters.