A4 form with checklist, measurement table and signature fields.Download PDFView the form
Looking for scheduled maintenance? See our air handling unit maintenance page for maintenance intervals, the checklist, the maintenance form and the factors that determine the price.
About air handling units
In hospitals, shopping malls, factories and office buildings, air cleanliness and temperature depend on the condition of the AHU. A clogged filter increases energy consumption; a loose belt reduces airflow; and a dirty coil impairs both efficiency and hygiene. On hygienic AHUs, maintenance must be documented in line with standards.
What we do
- G4, F7, F9 and HEPA filter replacement
- Fan, belt, pulley and bearing service
- Cooling and heating coil cleaning
- Drain pan and trap check
- Humidifier and droplet eliminator maintenance
- Heat recovery (rotary, plate) service
- Damper and actuator check
- Differential pressure and flow rate measurement
AHU maintenance schedule
- Monthly: filter differential pressure, belt tension
- Quarterly: pre-filter replacement, drainage, dampers
- Semi-annual: coil cleaning, bearing lubrication
- Annual: bag/HEPA filters, fan balancing, airflow measurement
Buildings we serve
Our base is in Ankara Etimesgut. We provide air handling unit services daily in Ankara, and on a project and contract basis in all 81 provinces of Türkiye, including İstanbul, İzmir, Bursa, Antalya, Konya, Kayseri, Eskişehir, Kocaeli, Adana, Gaziantep, Samsun and Trabzon. See our service areas.
Frequently asked questions
When should AHU filters be replaced?
Differential pressure matters more than the calendar; filters are replaced when they reach the manufacturer's limit. Pre-filters are usually replaced every 3 months, bag filters every 6-12 months.
Is hygienic air handling unit maintenance different?
Yes. It requires hygiene-compliant materials, disinfection and documentation; in hospitals, maintenance is planned with the infection control committee.
Does ventilation stop during AHU maintenance?
Planned maintenance is carried out after hours or during low-load periods; redundant systems are serviced one unit at a time.