Ventilation works out of sight, so problems are often noticed late. These signs mean it is time for a service:
- Odours or stuffy air in the room
- Dust around the grilles
- New noise or vibration
- Weaker airflow
- Humidity or condensation
- An unexplained rise in electricity use
A planned service checks the filters, fans, ducts and controls. How often filters need changing depends on the manufacturer's guidance and how the building is used. Regular servicing extends the life of the system and prevents unexpected downtime.
