DOMEKT R400F
DOMEKT R400F filter sets – F7 art. 774300005, M5 art. 774132408
Filter size: 278 × 258 × 46 mm
NB! Do not confuse with the newer DOMEKT R400F C6M model or with DOMEKT R400V / R400H – the filter dimensions and sets are different and are not interchangeable.
In this category you will find both original and high‑quality compatible filter sets for the Komfovent DOMEKT R400F ventilation unit. The same filters are also compatible with several REGO and R‑series units listed below. The filters are manufactured according to the manufacturer’s specifications and ensure:
- very good indoor air quality
- stable and quiet operation of the unit
- energy‑efficient performance
Compatible (non‑original) filters are produced in the same dimensions as the originals and fit precisely into the filter slots of the unit (278 × 258 × 46 mm).
Recommended filter combination: F7 + M5
For standard residential use, the manufacturer generally recommends the following filter combination:
- F7 / ePM1 60% – supply air filter (outdoor air)
- M5 / ePM10 50% – extract air filter
You can order this set here:
- Compatible F7 + M5 filter set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-filterset-f7-m5 - Original F7 + M5 filter set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-f7-m5-original-filterset
This combination offers a good balance between high filtration efficiency and a reasonable pressure drop.
Other available filter combinations
- F7 + M5 – recommended standard set
Compatible F7 + M5 set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-filterset-f7-m5
Original F7 + M5 set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-f7-m5-original-filterset - F7 + F7 – higher cleanliness level also on extract air side
Original F7 + F7 filter set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-f7-f7-original-filterset - M5 + M5 – lower filtration level but longer service life
Original M5 + M5 filter set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-m5-m5-original-filterset - Carbon filter set – for reduction of odours and VOCs (volatile organic compounds)
Carbon filter set for DOMEKT R400F / REGO 400 PE / REGO 400 PW and compatible units:
https://filters24.eu/domekt-r400f-rego-400pe-pw-carbon-filterset
Technical data of original KOMFOVENT filters
F7 / ePM1 filter – art. 774300005
- Filtration efficiency: ePM1 60% (ISO 16890)
- EN class: F7 (EN 779:2012)
- Dimensions: 278 × 258 × 46 mm
- Type: compact filter 278x258x46-C
- Use: supply air filter for outdoor air
M5 / ePM10 filter – art. 774132408
- Filtration efficiency: ePM10 50% (ISO 16890)
- EN class: M5 (EN 779:2012)
- Dimensions: 278 × 258 × 46 mm
- Type: compact filter 278x258x46-C
- Use: extract air filter
Compatibility – which units do these filters fit?
These filter sets (278 × 258 × 46 mm, compact filter 278x258x46-C) are compatible with the following KOMFOVENT models:
- Domekt REGO 400 PE
- Domekt REGO 400 PW
- Domekt R400F
- Domekt REGO 250 PE
- Domekt REGO 250 PW
- Domekt R250F (controllers C6.1 and C6.2)
- Domekt R250F C8
NB! These filters do not fit DOMEKT R400F C6M (new model), DOMEKT R400V or DOMEKT R400H. Those units use different filter dimensions and different filter sets.
Always check the exact model name on the unit’s nameplate and the dimensions of the existing filters before ordering.
Filter installation
Before replacing the filters, it is recommended to read the unit’s user manual. During installation you must follow the direction of the airflow – the arrows printed on the filter must point towards the rotor (heat exchanger).
Make sure that the filter frame sits straight and seals well, without gaps around the edges where air can bypass the filter.
Filter position in L and R versions
- L version: the supply air (outdoor air) filter is on the right
- R version: the supply air filter is on the left
This applies to all compatible DOMEKT R400F / R250F and REGO 250 / REGO 400 units using these filter dimensions.
FAQ – DOMEKT R400F / REGO 400 / REGO 250 filters
Which filters fit the DOMEKT R400F unit?
The following filters are compatible with the DOMEKT R400F unit. The same filters also fit the REGO 400 PE / PW and the REGO 250 / R250F models listed above:
- F7 / ePM1 60% supply air filter – art. 774300005
- M5 / ePM10 50% extract air filter – art. 774132408
You can order:
- Compatible F7 + M5 set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-filterset-f7-m5 - Original F7 + M5 set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-f7-m5-original-filterset - Original F7 + F7 set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-f7-f7-original-filterset - Original M5 + M5 set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-m5-m5-original-filterset - Carbon filter set:
https://filters24.eu/domekt-r400f-rego-400pe-pw-carbon-filterset
What is the difference between F7 and M5 filters?
- F7 / ePM1 60% – fine filter that captures most fine particles, pollen and allergens. Recommended for the supply air.
- M5 / ePM10 50% – medium‑class filter that captures coarser dust and larger particles. Usually used as the extract air filter to protect the unit and heat exchanger.
How do I install the filters in my DOMEKT R400F / REGO unit?
When installing:
- follow the airflow direction indicated on the filter – the arrows must point towards the rotor (heat exchanger)
- make sure the filter frame sits straight and seals well, without gaps
Filter positions:
- L version: supply air (outdoor air) filter on the right
- R version: supply air filter on the left
How often should I replace the filters in my DOMEKT R400F?
Recommended replacement interval:
- 1–2 times per year in residential applications
- more frequently if:
- you live in a high‑traffic or polluted area
- there are construction works nearby
- your home has a lot of dust or pets
Filters should also be replaced earlier if they are visibly dirty or if the unit shows a maintenance / filter alarm.
Can these filters be used in other Komfovent models?
Filters are designed for specific models and dimensions. These sets fit:
- Domekt REGO 400 PE / REGO 400 PW
- Domekt R400F
- Domekt REGO 250 PE / REGO 250 PW
- Domekt R250F / R250F C8 (controllers C6.1 and C6.2)
They must not be used in DOMEKT R400F C6M, R400V, R400H or in units with different filter dimensions. Always check the exact model name and existing filter size before ordering.
What is the difference between original and compatible filters?
- Original filters – approved by Komfovent and fully match the manufacturer’s specifications.
- Compatible filters – manufactured in the same dimensions and filter classes, fit into the same filter slots and provide a comparable filtration level.
Compatible filters are often a more cost‑effective solution while still maintaining the required filtration class and correct fit.
