NIBE Filters for MVHR Units

Shop NIBE filters for your mechanical ventilation with heat recovery (MVHR) system at Filter Express. Our EU-made house-brand range includes a G4 + F7 replacement filter set for the NIBE ERS 20-250, combining extract-air filtration with finer filtration of incoming outdoor air.

Choose by the full model name on your ventilation unit, then check the filter specification before ordering. Start with the NIBE ERS 20-250 filter set to view compatibility, dimensions and the current price. These are compatible replacement filters supplied under our house brand, rather than NIBE-manufactured original parts.

Choosing the right NIBE replacement filters

The right filter needs to match both your ventilation unit and its filtration requirements. A familiar brand name or a similar-looking panel is only a starting point. Checking the complete model reference helps you avoid ordering a set intended for a different housing.

Check the ventilation unit model

Look for the model information on the ventilation unit’s identification label or in its manual. Record every part of the model name, including the series and numbers. If you also have a NIBE heat pump, check the ventilation unit itself: the heating equipment’s model name does not identify the replacement ventilation filters.

For an easier comparison, have these details ready:

• Full unit model, including any letters or numbers after ERS.
• Existing filter dimensions, including length, width and depth in millimetres.
• Filter grade and position, noting which filter serves supply air and which serves extract air.
• A clear photograph of the unit label and any markings on the existing filters.

Use dimensions as a cross-check alongside the model listing. If the label is unclear, contact Filter Express with the information you can find before placing your order. You can also read our guide to choosing MVHR filters for an overview of filter formats.

Find the listed ERS filter set

Our current NIBE selection covers the ERS 20-250 G4 + F7 set. It contains two filters: one for extract air and one for supply air. The product page provides the dimensions and technical details you need to confirm your choice.

Other NIBE ERS models can have different requirements. Treat the full model name as essential, and ask us about any model that is not listed. If you are choosing filters for several properties or different ventilation brands, browse our wider MVHR filter range and match each unit separately.

Understanding G4 and F7 NIBE filters

The two filters in an MVHR set serve different air paths. The extract filter handles air leaving your rooms, while the supply filter handles outdoor air entering the system. Knowing their roles makes it easier to check a replacement set and install each filter in its correct position.

G4 filtration for extract air

The G4 extract filter captures larger airborne debris, such as textile lint and coarse dust, helping reduce dirt reaching the ventilation unit’s internal components. Everyday activities can contribute to this build-up, so the extract side deserves attention even when outdoor conditions seem relatively clean.

F7 filtration for supply air

The F7 supply filter provides finer particle filtration for incoming air. It helps capture airborne particles such as pollen, spores and fine dust before that air is distributed through your home. This makes the supply-side specification particularly relevant when comparing replacement filters for homes exposed to traffic or seasonal pollen.

These are particle filters. Their filtration ratings do not describe the removal of gases or odours, and they should not be treated as providing complete protection from outdoor pollution. Choose the grade specified for your unit and keep it maintained so that it can perform its intended role.

Read the ratings for the actual product

The listed house-brand set specifies ISO Coarse 80% for the extract filter and ISO ePM1 70% for the supply filter. G4 and F7 are older EN 779 class names; ISO 16890 uses a different testing and classification system.

There is no universal one-to-one conversion between the two standards. Read the stated ISO rating for the individual product instead of assuming every F7 filter has the same fine-particle performance. Matching the product specification to your unit’s requirements gives you a more useful basis for choosing than a broad label such as “premium”.

Planning your NIBE filter replacement

Regular checks help you judge when your filters need attention. Filter Express recommends a 3–6 month replacement planning interval for this house-brand set, adjusted to its condition and the environment. Always follow the instructions for your particular ventilation unit as well.

Adjust checks to your home and surroundings

Filters can collect dirt at different rates. Nearby building work, dusty surroundings, pets and higher outdoor particle levels can all make closer inspection worthwhile. Look at both filters when checking the set, rather than assuming that the supply and extract sides will look equally dirty.

A simple maintenance record can make repeat ordering easier:

• Note the installation date and the exact set you fitted.
• Record what you see at each inspection, including visible dirt or damage.
• Set a reminder for the next check based on the unit’s guidance and your observations.
• Keep the product details with your maintenance notes for your next order.

Inspect filters when a reminder appears, and replace them when required. A reminder may be based on elapsed time, so it should prompt a check rather than be taken as a measurement of how much dirt the filter holds.

Prepare for the next change

Read the instructions for your exact unit before opening it. Switch off the power and wait for the fans to stop, following the manufacturer’s procedure. Note the supply and extract positions, check any airflow markings and fit the replacements as directed.

The product page includes a How to change section for replacement guidance. If access, filter position or the control display is unclear, ask your installer for help. Avoid improvising a reset sequence from instructions for a different model.

Ordering NIBE filters in the UK

Once you have confirmed compatibility, open the product listing to choose your quantity and review the current price. The set format lets you order the supply and extract filters together. Keeping a spare set ready can help you plan the next change around your maintenance checks.

For timing and costs, check our shipping information. In-stock items are normally dispatched within 24–48 hours, except products marked with a longer dispatch time. Dispatch and arrival are separate stages, so allow for the delivery estimate when planning maintenance.

If you need to return a purchase, our returns and refunds policy explains the 30-day return period and the requirement for products to be unused and intact. Check the model and specification before fitting the filters, and contact us if the supplied item appears different from what you ordered.

Common questions about NIBE filters

Are these original NIBE filters

These are Filter Express house-brand replacement filters made in the EU and listed as compatible with the specified NIBE unit. Check the product’s compatibility details when deciding whether the set is suitable for your installation.

Can I wash the filters and reuse them

Treat this replacement set as disposable. Follow the filter and unit instructions, and replace used filters rather than washing them to extend their service life. Cleaning methods for another NIBE product should not be assumed suitable for this set.

Does a NIBE filter alarm mean I need a new set

A filter reminder means it is time to inspect the filters and follow your unit’s maintenance instructions. Replace them if required, then follow the correct reminder procedure. If an alarm persists or ventilation remains poor, contact your installer to investigate.

How do I order the right set again

Keep your unit model and previous order details together. Return to the NIBE ERS 20-250 G4 + F7 replacement set, confirm that it matches your installation and check the current listing before ordering. If your unit differs, send us its details so we can help you check your options.