Your home deserves clean, fresh air every day. An air handling unit (MVHR) brings outdoor air inside and filters it, so the quality of your filters directly affects both indoor air and how smoothly the system runs. Especially during the heating season, when fine particles (PM10, PM2.5) increase, a good filter isn’t a luxury — it’s a must.

Fully sealed — so air goes through the filter

If a filter isn’t properly sealed, part of the air slips around the edges and dust enters the system unfiltered. CleanFilter offers only filters for air handling units and filters for MVHR systems that are securely glued along the entire frame to ensure maximum airtightness.

Proven filtration performance

Not every filter cleans the air as well as the label suggests. That’s why we use media tested to ISO 16890. In the CleanFilter range you’ll find these filters for MVHR systems, tested in the “Fiatec” laboratory in Germany:

• G3–G4 (Coarse): blocks larger dust and insects
• ePM10 (M5–M6): pollen and mould spores
• ePM2.5 (M6–F7): fine combustion particles (urban pollution)
• ePM1 (F7–F9): smog and ultra-fine particles

Hygienic, PFAS-free

It matters not only what a filter captures, but also what it’s made of. CleanFilter uses safe synthetic fibres without PFAS, certified to VDI 6022 — ideal for everyday use at home.

Breathe easy — trust your clean air to CleanFilter.

Filters fully compatible with the most popular models

CleanFilter manufactures filters for air handling units and filters for MVHR systems exactly to the technical specifications of each ventilation unit manufacturer.

• Precise German production ensures a size deviation of less than 1 mm.
• High-efficiency filter media from Sandler AG. PFAS-free.
• Moisture-resistant cardboard or synthetic frames.

This guarantees airtight sealing, long service life, and stable performance. Filtration efficiency is tested to the ISO 16890 standard both at the factory and in an independent laboratory in Germany.

It’s no coincidence that some manufacturers choose the same filters for their ventilation units.
Whether you have a popular system like Flexit, Komfovent, Wolf, Systemair, Zehnder, or a less common one such as Brink, Oxygen, Salda, Vallox, or Viessmann — our filters always deliver clean air and maximum performance.

Order today — fast delivery, clean air included

CleanFilter maintains the largest ventilation filter warehouse in Europe, covering more than 2,000 m² and stocking filters for over 1,500 different ventilation unit models. That’s why we can offer filters for air handling units and filters for MVHR systems not only for the most popular brands like Komfovent, Wolf and Zehnder, but also for many less common manufacturers.

Our range includes:

• High-efficiency F7 – ePM1 70% filters that capture over 25% more of the most harmful ePM1 particles than standard filters.
• Activated carbon filters — full protection against smog, effectively removing volatile pollutants and harmful gases (NOx, O₃), keeping the air fresh even in heavily polluted or odorous areas. Ideal for winter smog filtration.

Your filters for ventilation systems will be delivered within 3-5 business days with eco-friendly shipping to your nearest parcel locker, pick-up point, or by courier straight to your door.

Replace your filter and enjoy a fresh airflow!

Dirty filters reduce airflow, increase noise, and raise energy use. That’s why it’s important to replace your air handling unit filter or MVHR filter on time, following the manufacturer’s recommendations or any system alerts.

But not all filters are the same. Choosing the right filter class helps reduce air pollution when you need it most.

We offer different types of filters for MVHR systems for every need:

• G4 / M5: Basic filtration — ideal if your outdoor air is already clean and you want minimal airflow resistance. Usually lasts up to 6–8 months.
• F7 – F9: Fine filtration — best for city centres, busy roads, or industrial areas with higher pollution and fine dust (PM2.5, PM1). Typically lasts 4–6 months.
• Activated carbon filter: Full protection against smog — ideal for heavily polluted areas with odours or higher levels of gases such as nitrogen oxides or ozone. Replace every 3–4 months.

Tip: If you or your family members suffer from pollen allergies, choose at least an M5-class filter.

Remember: Higher filtration gives cleaner air, but it can slightly increase energy use and may require more frequent replacements.

The right ventilation filter helps keep indoor air clean and also affects energy use and noise levels. Depending on your location, outdoor air quality and everyday needs, different filters for ventilation units may be the better choice. Below you will find a simple overview to help you decide which air filter, ventilation filter or AHU filter best suits your situation.

G4 – the most cost-effective choice

A simple air filter for situations where outdoor air is relatively clean. A good option if you want lower cost, longer service life and quieter operation. Read more

M5 – balanced ventilation filter

A good choice for everyday use in ventilation units. This filter helps capture pollen, dust and mould spores while keeping a good balance between filtration and energy use. Read more

F7 – better air quality in polluted areas

Especially suitable in cities, near heavy traffic or for allergy sufferers. This ventilation filter noticeably improves indoor air quality. Read more

Activated carbon – for odours and gases

Complements standard filters for ventilation units and helps reduce odours, smoke and harmful gases from outdoor air. Often chosen as an additional AHU filter where extra protection is needed. Read more