Servicing your Renson ventilation
Renson is a Belgian manufacturer based in Waregem. Its most common ventilation is the Healthbox, a demand-controlled extract system: stale air is drawn from wet rooms according to what its sensors measure, and fresh air comes in through vents in windows or façades. Renson also makes heat-recovery units, under the Endura Delta name.
A Healthbox is not serviced like a heat-recovery unit. There is no exchanger, but there are sensors, valves and vents that must stay clean for the control to stay accurate.
The Renson units we service
Healthbox
Demand-controlled extract system (system C), measuring room by room.
Endura Delta
Heat-recovery ventilation (system D).
Window and façade vents
The other half of a system C: this is where fresh air comes in.
Independent of the brand
What matters on a Renson
The Healthbox sensors
The Healthbox sets its airflow room by room from the humidity and air quality it measures. A dirty sensor reads wrong, and the room is badly ventilated. We clean the modules and check that the control responds.
The vents
In a system C, fresh air enters through the vents. Dirty or closed, they stop the extraction from working, even with a perfect unit. We check and dust them.
The unit and the valves
Fan, duct connections and extract valves are cleaned. On an Endura Delta, the exchanger and the condensate drain are added, as on any heat-recovery unit.
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.
From€139
Heat-recovery ventilation service
System D: filtered fresh air to living spaces, with heat recovery.
From€179
Prices exclude VAT. 6 % on servicing in a private home over ten years old, 21 % otherwise.
What the service includes
Filter replacement, on request
Filters are not included in the displayed price: what they cost depends on the model. Ask for replacement when you book and we tell you the amount before the visit. We fit the classes recommended by the manufacturer (typically ISO Coarse on extract and ePM1 on supply) and note the exact reference for your future orders.
Unit and heat exchanger cleaning
Casing stripped down, impellers de-dusted, plate or rotary exchanger cleaned, condensate tray and drain checked.
Valves and grilles
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, before and after the work, added for 15 € when you book. Readings are compared with the design flow rates (NBN D50-001) and recorded in the report.
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.
Frequently asked questions
How much does a Healthbox service cost?
A Healthbox is an extract-only system: the service costs €139 excl. VAT. An Endura Delta is a heat-recovery unit, at €179 excl. VAT. The price is shown before you book.
Do I need a Renson-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 Renson 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.