Oxygen is a Lithuanian company specialising in the development and production of advanced ventilation systems aimed at delivering high indoor air quality and energy efficiency. A key component of these systems is the Oxygen filters, which are designed to purify air from outdoor and indoor dust particles as well as other fine pollutants. When properly maintained and replaced on time, these filters contribute to a healthy indoor microclimate and help prevent system overload and clogging.
In this article, we’ll explore the practical aspects of Oxygen heat recovery unit filters – including their placement, replacement process, filter classifications, and other essential information.
Filters in the Ventilation Unit
Ventilation systems are equipped with both supply air and extract air filters, which play a crucial role in maintaining air quality and protecting the system from contamination.
Supply Air Filter
- Ensures the quality of incoming air by filtering out outdoor dust and insects.
- Available filter classes: M5, Carbon G4, and F7.
Extract Air Filter
- Protects the ventilation unit from dust and debris from inside the building.
- Filter used: M5 class.
How to Replace an Oxygen Filter – Step-by-Step Guide
Follow these steps to properly replace the filter in your Oxygen heat recovery unit and ensure your system runs efficiently.
1. Preparation
- Switch off the unit and disconnect it from the electrical supply.
- Identify the correct replacement filter (e.g., standard M5 filter for the C series).
2. Removing the Old Filter
- Open the filter compartment of the unit marked “OXYGEN”.
- Carefully remove the used filter to avoid releasing dust.
3. Inserting the New Filter
- Unpack the new filter and check for any damage.
- Insert it into the unit securely, ensuring it is properly positioned and locked in place.
4. Closing the Unit
- Close the filter compartment and ensure it fits tightly against the unit body.
- Turn the unit back on and check that it is operating correctly.
5. Reset the Filter Counter
- Follow the manufacturer’s instructions to reset the filter age counter.
Tip: If you’re unsure about the replacement process, consult a specialist or refer to the manufacturer’s user guide.
Filter Classifications – What Do They Mean?
Filters are classified based on the size of particles they can trap. Understanding these classifications is key to choosing the right filter. All Oxygen filters comply with the modern ISO 16890 standard, although you may also come across the older EN 779:2012 classification in product descriptions.
- M5 (EN 779:2012) / ePM10 50% (ISO 16890) – Captures particles between 0.3 and 10 µm with 50% efficiency. Ideal for general protection of the ventilation system against larger particles.
- F7 (EN 779:2012) / ePM1 70% (ISO 16890) – Captures finer particles (0.3 to 1.0 µm) with 70% efficiency. Especially suitable for sensitive individuals and allergy sufferers, ensuring superior indoor air quality.
How Often Should You Replace the Filters?
To maintain effective air filtration and system performance:
- Replace M5 filters at least every 6 months.
- Replace F7 filters every 4 months.
Regular filter replacement helps prevent air contamination, improves overall air quality, and protects the heat recovery unit from blockages and excessive strain.
The Importance of Oxygen Filters in Ventilation Systems
Oxygen filters are an essential part of your home or commercial ventilation system, ensuring clean and healthy indoor air. By understanding filter classifications and replacing them every 4–6 months, you can significantly improve your air quality, extend the life of your equipment, and reduce energy consumption.
Whether you’re looking to maintain your system’s efficiency or prioritise clean air for allergy-sensitive individuals, choosing the right Oxygen filter and changing it regularly is key.
