Servicing your Itho Daalderop ventilation
Itho Daalderop is a Dutch manufacturer whose ventilation is common in Belgium, especially in Flanders and Brussels: CVE extract units, HRU heat-recovery units, then APure Flow.
We service these generations: unit, fans, valves and, on a heat-recovery unit, filters, exchanger and condensate drain.
The Itho Daalderop units we service
CVE (extract only)
Common extract unit, often run by a remote or a sensor.
HRU ECO (250, 300, 350)
Very widespread heat-recovery unit.
HRU 400
Heat recovery for larger homes.
APure Flow (380, 450)
Current heat-recovery generation.
Independent of the brand
What matters on a Itho Daalderop
The remote and the sensors
Many Itho units run from a wireless remote or a humidity sensor. A flat battery or a disconnected sensor and the ventilation stays on its lowest setting. We check that the unit responds.
The condensate drain
An HRU produces water in winter. The trap must stay filled and the drain clear, or the water comes out of the unit. We check them on every visit.
Itho-size filters
Each HRU and each APure takes its own filter sizes. We note the exact reference.
What this service costs
One price per system, published before you book, with no questionnaire to fill in to get it. Anything out of the ordinary (a lot of valves, an unreachable unit, a system never opened) we tell you before the visit, never on the invoice.
Extract ventilation service
System C: mechanical extract from wet rooms, façade vents for supply.
€139
Heat-recovery ventilation service
System D: filtered fresh air to living spaces, with heat recovery.
€159
Prices exclude VAT. 6 % on servicing in a private home over ten years old, 21 % otherwise.
What the service includes
Unit and heat exchanger cleaning
Casing stripped down, impellers de-dusted, plate or rotary exchanger cleaned, condensate tray and drain checked.
Valves, optional
15 €, ticked when you book. Extract and supply valves removed, cleaned and refitted without altering their original setting, a frequently missed detail that unbalances the whole system.
Airflow measurement, optional
Room-by-room measurement with a flow meter, added for 20 € when you book. Readings are compared with the design flow rates (NBN D50-001) and recorded in the report: that is what reveals an anomaly and confirms the system is doing its job.
Electrical and mechanical checks
Motor, bearings, direction of rotation, humidity and CO₂ sensors where fitted, and the controls (switch, remote, home automation).
Service report
A written document covering the condition found, the parts replaced, our recommendations, and the measured airflow if you took the option. Useful for a building manager, a landlord or a future sale.
Prefer to change the filters yourself between services? Our catalogue lists the filters that fit each Itho Daalderop model.
Frequently asked questions
Where can I find the filters for my Itho HRU?
In our catalogue, under your model's name. We show you how to change them during our visit.
Do I need a Itho Daalderop-approved installer?
Servicing a ventilation system is not restricted to the brand's installers. If your unit is still under warranty, check its terms: some require regular, documented servicing. Our written service report is there for that.
How often should a Itho Daalderop be serviced?
Manufacturers generally recommend a filter check every 3 to 6 months and a full service once a year. After a first visit, we tell you the realistic interval for your system.