Komfovent Domekt R 400 V C6M filter set M5+M5 (house brand)
Komfovent Domekt R 400 V C6M filter set M5+M5 (house brand)
Filter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
General dust and particle filtration
Filter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
Certified quality to international ISO standards
Manufactured entirely within the European Union
Effective filtration for up to 6 months.
Price for set
Model compatibility
Compatible with the following models:
- Komfovent Domekt R 400 V C6M
What filter set protects against
Filter set includes 2 filters:
- Extract filter – M5 (ePM10 55%) – for MVHR protection
- Supply filter – M5 (ePM10 55%) – for indoor air protection
This filter set follows the ISO 16890 standard for particle filtration efficiency.
The M5 filters capture around 55% of particles that are 10 microns or larger, such as pollen, mold spores, pet dander, and house dust. One of them filters the air extracted from your indoor space and protects the MVHR unit; while the other cleans the outdoor air supplied into your premises, improving indoor air quality and protecting your health. This helps reduce visible dust, lowers energy consumption, keeps the system running quietly, and extends its lifespan.
Usage and maintenance
Komfovent recommends replacing the filters every 6 months, to ensure optimal air quality and system performance.
However, replacement frequency may vary depending on factors such as:
- Air pollution levels (e.g. urban vs rural areas)
- Allergies or respiratory sensitivities
- Indoor pets or smoking
- Dust from nearby construction sites
If your system includes a filter change indicator, follow its alerts. Otherwise, check the filters visually – if they appear very dirty or clogged, it's time to replace them.
Manufacturing quality
This filter set is manufactured in Europe by an ISO 16890 certified production facility that operates under the same strict standards as original Komfovent filters. The facility is managed by the same authorities responsible for overseeing ISO certification. The filtering materials are sourced from leading European suppliers and meet the same high standards for performance and reliability.
The filters are made using Minipleat technology, a dense pleating method where the filter media is tightly folded and bonded with glue. This glue fixation keeps the pleats evenly spaced and stable, ensuring consistent filtration across the entire surface. Compared to standard pleat types, this design offers a larger effective filtration area, more uniform airflow distribution, improved particle capture, and a lower pressure drop.
Filter Type / EN 779 Class | ISO 16890 Class | Efficiency (%): Coarse (>10 µm) | PM10 (≤10 µm) | PM2.5 (≤2.5 µm) | PM1 (≤1 µm) | Gas/VOC Removal | Real-Life Particle & Pollutant Examples |
---|---|---|---|---|---|---|---|
G1 | ISO Coarse | ~40% | <10% | ~0% | ~0% | Sand, textile fibers, carpet fluff, plant debris, insect wings, visible lint | |
G2 | ISO Coarse | ~50% | <15% | ~0% | ~0% | Sawdust, hair, coarse textile particles, large flakes of paint or rust | |
G3 | ISO Coarse | ~60% | <25% | ~5% | ~0% | Coarse dust, lint, animal hair, some pollen | |
G4 | ISO Coarse | 65-75% | 25-35% | 10-15% | <5% | Large pollen grains, soil particles, textile lint | |
M5 | ISO ePM10 ≥50% | ~80% | 50–65% | 20–30% | 10–15% | Pollen, mold spores, pet dander, house dust | |
M6 | ISO ePM10 (60–80%) | ~90% | 65–80% | 30–45% | 15–25% | Building/construction dust, concrete dust, ash particles, fine cement dust | |
F7 | ISO ePM2.5 (50–65%) | >90% | 75–90% | 50–65% | 30–45% | Bacteria, smog, tobacco smoke particles, combustion dust, spores, wildfire smoke particles | |
F8 | ISO ePM2.5 (65–80%) | >95% | 85–95% | 65–80% | 45–60% | Fungal spores, air pollution aerosols | |
F9 | ISO ePM1 (80–95%) | >95% | >95% | >90% | 80-95% | Diesel soot, airborne viruses, smoke from traffic and industry, combustion particles, ultra-fine dust, secondary organic aerosols from chemical reactions in air | |
Activated Carbon | Not classified (gas filter) | Varies (combined with prefilter) | Varies | Varies | Varies |
High Efficiency |
Volatile Organic Compounds (VOCs), formaldehyde, ozone, nitrogen dioxide (NO₂), sulfur dioxide (SO₂), benzene, toluene, cooking odors, cigarette smoke odors, pet smells, perfumes |
Instructions for changing the filters are provided in the manuals below:
Filter Replacement Manual for Komfovent Domekt C6M
Filter Replacement Manual for Komfovent Domekt R & Domekt CF
Frequently Asked Questions
Frequently asked questions ordered by popularity.


Filter class refers to the size and amount of particles a filter can trap. The higher the classification, the more effectively the filter removes particles from the air.
For incoming outdoor air, it’s generally recommended to use higher-class filters. However, we always suggest following the manufacturer’s guidance and using the specific filter sets outlined in your unit’s eco-commissioning documentation.
For more information, take a look at our comprehensive guide to filter classes for heat recovery units.




It is recommended to change the filters in your HRV every 3 to 6 months, depending on how dirty they become. However, the key signs that your filters need replacing include:
- An increase in noise from the HRV
- A reduction in the amount of air being supplied or extracted
Smart HRVs with an electronic control panel and display screen show the volume of air supplied and extracted per hour.
For example, if a Zehnder ComfoAir Q350 HRV in a 140m² home operates at an optimal rate of 190m³ per hour but drops to 150–170m³, the filters should be replaced.


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