Vallox 145 MV/SE / ValloPlus 510 filter set No. 28 G4+G4+F7 (original)
Vallox 145 MV/SE / ValloPlus 510 filter set No. 28 G4+G4+F7 (original)
Filter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
General dust and particle filtration
Protects against allergens and urban pollution
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.
Model compatibility
Compatible with the following models:
- Vallox 145 MV
- Vallox 145 SE
- ValloPlus 510 SE
- ValloPlus 510 SC
- ValloPlus 510 MV
- Filter set No. 28
What filter set protects against
Filter set includes 3 filters of different efficiency classes:
- Extract filter – G4 (Coarse 70%) – for MVHR protection
- Supply filter – G4 (Coarse 70%) – for indoor air protection (pre-filter)
- Supply filter – F7 (ePM1 55%) – for indoor air protection
This filter set follows the ISO 16890 standard for particle filtration efficiency.
The two G4 filters capture up to 70% of coarse airborne particles that are larger than 10 microns, such as soil particles, large pollen grains, plant debris, insect wings, sawdust, sand and textile lint. One of them cleans the air extracted from your indoor space and protects the MVHR unit by reducing visible dust and general build-up in the ventilation system. This keeps the unit quiet, and extends your system’s lifespan. Meanwhile, the second one acts as a pre-filter on the supply side, capturing larger particles from incoming outdoor air before it reaches the main filter.
The F7 filter captures around 55% of very fine particles as small as 1 micron, including bacteria, smog, tobacco smoke particles, combustion dust, spores, and wildfire smoke particles. It helps clean incoming outdoor air before it enters your premises, improving indoor air quality and protecting your health.
Usage and maintenance
Vallox 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 by Vallox, a trusted partner we’ve worked with for many years. By purchasing all products directly from them, we ensure authenticity and consistent quality. Vallox filters are designed and manufactured in Finland, adhering to high European production standards. With over 50 years of experience, Vallox is a leader in ventilation solutions, continuously innovating to improve energy efficiency, reduce noise, and enhance user convenience. Their commitment to quality is reflected in the use of certified materials and thorough testing, ensuring every filter delivers reliable performance and durability.
The F7 filter is 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.
On the other hand, the two G4 filters are made from a durable, fabric-like material designed to capture larger particles. The extract-side filter protects the MVHR unit from internal dust build-up, while the supply-side acts as a pre-filter, helping to prolong the lifespan and performance of the main F7 filter.
Choosing original Vallox filters ensures that your MVHR system operates according to the manufacturer’s stated technical data, maintaining both optimal air quality and energy efficiency.
Original product codes
- 3357000
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 manual below:
Filter Replacement Manual for Vallox 145 MVSE; ValloPlus 510; filter set No. 28
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.


- Check the label on the unit itself, which usually displays the manufacturer and model number.
- Contact your installer or the developer/builder of your property for details.
- Measure the width, length, and height of the filter, then use these measurements to browse our online shop. Our system will suggest the correct recuperator filters for your unit.
- If none of the above help, please get in touch via the chat box at the bottom right of the page, and we’ll be happy to assist you.
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