Zehnder Filters

Discover our range of replacement filters for your Zehnder ventilation unit, all made in the EU! Our selection includes high-performance filter sets combining G4 (ISO Coarse 60%) and F7 (ISO ePM1 50%) filters, designed to protect your system and improve indoor air quality. Whether you’re looking for original Zehnder filters or affordable house brand alternatives, all our options are quality-tested and fully compatible with Zehnder MVHR units.

Model compatibility

This category includes filter sets compatible with all major Zehnder MVHR ventilation units, including:

• ComfoAir series
• ComfoD series
• ComfoSpot series

To ensure the right fit, it’s important to know the exact model of your ventilation unit, as different models require different filters. You’ll find helpful tips on identifying your device in the FAQ section.

Filter types and what they protect against

Our replacement filter sets for Zehnder units are designed to ensure optimal air quality and system performance by combining two filters with different filtration roles. Each set includes:

• G4 filters (ISO Coarse 60%) on the extract side: ideal for capturing larger particles like soil particles, large pollen grains, plant debris, insect wings, sawdust, sand and textile lint.
• F7 filters (ISO ePM1 50%) on the supply side: high-efficiency filters that capture very fine particles, including bacteria, smog, tobacco smoke particles, combustion dust, spores, and wildfire smoke particles.

Usage and maintenance

To keep your MVHR system running efficiently and your indoor air clean, we recommend replacing the filters every 3–6 months. However, this depends on your environment, if you have pets, or nearby construction.

To make the process easy, we provide step-by-step replacement instructions for each filter model. You can find them under the “How to change” tab on every product page.

Manufacturing quality you can trust

The original Zehnder filters are manufactured in Zehnder’s own production facilities in the Netherlands, France, and Switzerland. Our carefully developed house brand filters are also made in the European Union by certified manufacturers. Both are produced with high-quality materials, under strict ISO 16890 standards to ensure high filtration performance and reliability.