Itho Daalderop HRU ECO 350 filters

The filter indicator on HRU ECO units is a maintenance reminder. Check the filters, fit a new set if they are dirty — which they usually are after 3–6 months — and reset the indicator as described in your manual. Resetting it without changing the filters only postpones the reminder while airflow keeps dropping.

We stock original filter sets for the Itho Daalderop HRU ECO range — HRU ECO 150/200 and HRU ECO 350 — one of the most widely installed balanced ventilation units in Dutch new-build housing. The model code is usually printed on a sticker inside the unit's front cover.

In-stock Itho Daalderop filters are dispatched within 24 to 48 hours and typically arrive in about 4 to 5 business days anywhere in Belgium. Because HRU ECO units are so common in Belgian and Dutch new-build housing, we keep both filter classes for them in stock to avoid delays, and delivery is free on orders from €100.

For each HRU ECO size we stock two original sets:

• G4+G4 — coarse filters on both sides, the standard option
• F7+F7 — fine F7 (ePM1) filters that also catch pollen and fine dust

The F7 set is the better choice for allergy sufferers or homes near busy roads.

No. The HRU ECO 150 and 200 share one filter size, while the HRU ECO 350 takes a different set. Check the model code on the sticker inside the front cover before ordering, then choose G4+G4 or F7+F7 in the matching size.

Yes, and for an owners' association it is usually the practical way to do it. Send us the list of units and quantities and we can prepare a consolidated order with a delivery schedule; above four filter sets it is worth contacting us directly about pricing rather than ordering at list price. A valid Belgian VAT number gives 0% VAT in the basket once verified, and VAT invoices are e-mailed automatically after each purchase, with a pro forma invoice available in advance on request. One thing to do before sending the list: check the model per apartment. Buildings are often fitted out in phases, and HRU variants in the same block can take different filter sizes.