FLEXIT ECONORDIC WH4/W4
FLEXIT EcoNordic WH4 / EcoNordic W4 Filter Sets – Original, High-Quality Alternative and Carbon
In this category you will find the original FLEXIT filter set (art. 117079) as well as carefully selected high-quality alternative sets and a carbon filter set for the FLEXIT EcoNordic WH4 / EcoNordic W4 ventilation unit. All sets are manufactured in the correct size 270 × 242 × 95 mm to ensure:
- very good indoor air quality
- reliable and quiet unit operation
- energy-efficient performance with low pressure drop
Our alternative (non-original) filters are produced with the same dimensions and filtration class as the originals and fit precisely into the filter slots of the unit (270 × 242 × 95 mm).
Compatibility
These filter sets are designed specifically for:
- FLEXIT EcoNordic WH4
- FLEXIT EcoNordic W4
Do not confuse these units with other FLEXIT Nordic or EcoNordic models – filter sizes and sets may differ. Always check the model name on the nameplate and compare the filter dimensions (270 × 242 × 95 mm) before ordering.
Available Filter Sets
1. High-Quality Alternative F7 / ePM1-55% Filter Set (Recommended)
A popular and cost-effective choice that keeps maintenance costs lower while maintaining high air quality.
- Content: 2× F7 / ePM1-55% compact filters
- Dimensions: 270 × 242 × 95 mm
- Same filtration class as original F7 / ePM1-55%
- Reliable fit and comparable filtration performance
Order the high-quality alternative set here:
FLEXIT EcoNordic WH4 / W4 Alternative Filter Set
2. Original FLEXIT F7 Set – Art. 117079
- Original set number: 117079
- Content: 2× F7 / ePM1-55% filters
- Dimensions: 270 × 242 × 95 mm
- Use: supply and exhaust air filtration with high efficiency
- Ideal if you prefer to use OEM parts from FLEXIT
Order the original FLEXIT set here:
FLEXIT EcoNordic WH4 / W4 Original Filter Set (Art. 117079)
3. Carbon Filter Set – Odour and VOC Reduction
- Content:
- 1× carbon filter for supply air (outdoor air)
- 1× regular filter for exhaust air (extract air)
- Dimensions (both filters): 270 × 242 × 95 mm
- Carbon filter on supply air side reduces odours and VOCs
- Regular exhaust filter protects the unit and exhaust ductwork
Recommended in urban locations, near busy roads or anywhere odour reduction is important.
Order the carbon filter set here:
FLEXIT EcoNordic WH4 / W4 Carbon Filter Set
Recommended Solution for Most Users
-
Standard residential use:
High-quality alternative F7 / ePM1-55% set (2× filters) – same protection level as original filters and very good balance between air quality, energy efficiency and price. -
Areas with odour issues (traffic, industry, restaurants, smoke):
Carbon filter set (1× carbon supply + 1× regular exhaust filter).
Technical Data – Filter Specification
- Filtration efficiency: ePM1-55% (ISO 16890)
- EN class: F7 (EN 779:2012)
- Filter type: Compact filters
- Set content: 2 pcs (supply + exhaust)
- Dimensions: 270 × 242 × 95 mm
- Compatibility: FLEXIT EcoNordic WH4, FLEXIT EcoNordic W4
- Original set number: 117079
Filter Installation
- Switch off the unit and follow the FLEXIT user manual.
- Remove old filters and insert new ones in the same position.
- Observe airflow arrows (if printed) – they must point in the airflow direction inside the unit.
- Ensure the filters sit firmly without gaps around the edges.
- Close and lock the door properly for a good seal.
Replacement Interval
- Typically 1–2 times per year in normal residential use.
- Replace more often if:
- you live in a polluted or high-traffic area,
- there is construction work nearby,
- there is a lot of dust or pets indoors.
- Replace earlier if filters look dirty or the unit shows a filter alarm.
FAQ – FLEXIT EcoNordic WH4 / W4 Filters
Which filters fit FLEXIT EcoNordic WH4 and EcoNordic W4?
- Original set: art. 117079 – 2× F7 / ePM1-55% filters, 270 × 242 × 95 mm
- High-quality alternative set: 2× F7 / ePM1-55% filters, same dimensions
- Carbon set: 1× carbon supply filter + 1× regular exhaust filter, same dimensions
Why choose the high-quality alternative filter set?
- Same filtration class (F7 / ePM1-55%) as the original.
- Correct dimensions and good fit in the FLEXIT filter slots.
- Attractive price level with very good performance.
- Ideal if you want to keep regular maintenance costs under control while maintaining air quality.
When should I use the carbon filter set?
- If you want to reduce outdoor odours (traffic, smoke, restaurants, industry).
- To improve perceived indoor air quality and reduce VOCs.
- Especially suitable for city apartments and houses near busy streets.
How do I make sure I order the right set?
- Check the unit’s nameplate – it must be FLEXIT EcoNordic WH4 or FLEXIT EcoNordic W4.
- Measure your existing filters (approx. 270 × 242 × 95 mm).
- Compare with the product description (original set art. 117079).
Using the wrong filter size or class may cause:
- air bypass (leakage around the filter),
- poorer indoor air quality,
- higher energy consumption and fan noise,
- faster soiling of the heat exchanger and ductwork.
Stock and Delivery
Original FLEXIT, high-quality alternative and carbon filter sets for FLEXIT EcoNordic WH4 / EcoNordic W4 are usually available from stock, ensuring fast dispatch and quick delivery within the EU.
