Vallox 125 filter set No. 35 G4+G4+F7 (original)
Vallox 125 filter set No. 35 G4+G4+F7 (original)
Filter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
General dust and particle filtration
Captures pollen, mold spores, and other allergens
Protects against allergens and urban pollution
Key features of this product
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 model:
- Vallox 125
What filter set protects against
Filter set includes 3 filters of different efficiency classes:
- 2 × G4 filters (Coarse 75%) – for coarse-particle filtration and MVHR protection
- 1 × F7 filter (ePM1 55%) – for incoming-air filtration and indoor air protection
This filter set follows the ISO 16890 standard for particle filtration efficiency. The G4 filters capture approximately 75% of coarse airborne particles, including household dust, larger pollen grains, fibres, sand, sawdust, plant debris and insects. They help reduce dirt accumulation inside the ventilation unit, keeping the heat exchanger, fans and air ducts cleaner. This supports efficient airflow, reduces unnecessary strain on the system and helps extend the unit’s service life.
The F7 filter captures approximately 55% of fine particles as small as 1 micron, including fine pollen, mould spores, bacteria-carrying particles, smog, combustion dust and smoke particles. It cleans incoming outdoor air before it enters your premises, helping improve indoor air quality and providing additional protection for people affected by allergies or respiratory sensitivities.
Usage and maintenance
To ensure optimal air quality and reliable ventilation-system performance, inspect the filters regularly and replace them when they become dirty or clogged. Under typical operating conditions, filters should usually be replaced every 3–6 months. 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 is time to replace them.
Manufacturing quality
This is an original Vallox filter set manufactured by Vallox for the Vallox 125 ventilation unit. Original filters are produced according to the ventilation-unit manufacturer’s technical requirements, helping maintain the intended airflow, filtration performance and energy efficiency of the system.
The set combines synthetic filter-material elements with a panel filter manufactured using Z-line technology. The folded filter structure increases the effective filtration surface area, improving particle capture and dust-holding capacity while maintaining suitable airflow through the ventilation unit. By using original Vallox filters, you help ensure that your MVHR system continues to operate according to the manufacturer’s stated technical specifications.
Original product codes
- 4122005
- 7912213
| 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 can be found in the operating manual (section “Replacing the filters”, p. 12): Vallox 125 MV manual
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