Atrea Duplex EC5/ECV5 370 Filters

We stock original filters for the Atrea Duplex range, including Duplex EC5/ECV5, Easy, Easy2, Pro, Pro-V and Slim units. Filters for the EC5/ECV5 and Easy models come in packs of 10 of one class (G4 or F7), while Easy2, Pro, Pro-V and Slim filters come as sets of two. If you know your unit is a Duplex but are unsure of the exact variant, measure the length, width and depth of the current filter in millimetres and match it on the product page.

Atrea's manufacturer recommendations for Duplex filters cover a few points:

• check the filters every 3 months
• replace them at least twice a year, even if they look clean
• watch for the maintenance reminder shown on the RD5/RD6 controller display, which is triggered once the pressure drop across the filter increases

Following this on-screen reminder rather than a fixed calendar date gives a more accurate result, matched to the actual air quality conditions in your space.

On most Duplex models, yes. Atrea filters come in two classes: G4 for coarse dust and F7 (ePM1) for fine dust and pollen. For most EC5/ECV5, Easy, Easy2, Pro and Pro-V sizes we stock both classes in the same size, so you can switch from G4 to F7 without any modification — one of the simplest upgrades for households with pollen or dust allergies. A few compact models, such as the Duplex Slim 150, Easy2 200 and Pro-V 160, are available in G4 only.

Duplex EC5/ECV5 and Duplex Easy units use single filters, and Atrea supplies them in packs of 10 pieces of one class — G4 or F7. A pack covers several replacements, so check how many filters your unit takes and order G4 and F7 packs separately if you run a different class on each side. Newer models such as Duplex Pro, Pro-V and Easy2 use matched sets of two filters instead.

If the filter you ordered doesn't match your Duplex variant, we accept returns or exchanges as long as the filter is unused and still in its original packaging. The simplest way to avoid this situation in the first place is to send us the exact Duplex model code, or the filter's own dimensions, before ordering – this way you avoid a mismatch and the unnecessary wait involved in a return.