Four-way cassette air conditioner mounted in a suspended ceiling

Cassette and ducted AC maintenance and repair

We solve cleaning, drainage and air distribution problems in cassette units recessed into suspended ceilings and in concealed ducted systems.

In shortA cassette air conditioner is an indoor unit recessed into a suspended ceiling that blows air in four directions; a ducted air conditioner is concealed in the ceiling and distributes air through diffusers. The most common issues with these units are the condensate pump, dirty filters and air distribution; YOİ Mühendislik installs, maintains and repairs all brands.
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About cassette and ducted air conditioners

Cassette and ducted indoor units are preferred in stores, restaurants and open-plan offices for even air distribution. Because they are hidden in the ceiling, their maintenance gets neglected; a clogged condensate pump leaks water into the ceiling, and a dirty duct reduces capacity.

What we do

  • Cassette panel and filter cleaning
  • Condensate pump and float switch replacement
  • Fan and coil cleaning on ducted units
  • Grille, plenum and duct airtightness
  • Static pressure and airflow adjustment
  • Control board, sensor and remote control repair
  • Fresh air connection
  • Installation and suspended ceiling coordination
Ceiling-mounted cassette air conditioner indoor unit
Drain pump and panel check on a cassette AC.

Common problems

Symptom / alarmPossible causeWhat we do on site
Water dripping from the ceilingCondensate pump failure, clogged drain panPump testing and replacement, drain pan cleaning
Weak airflowDirty filter, duct leak, fan settingFilter, duct and fan speed check
NoiseFan imbalance, loose panelFan balancing, mounting check
Error codeFloat switch, sensor, PCBCode reading and part testing

Buildings we serve

StoreRestaurant and caféOpen-plan officeMeeting roomClinicShowroom

Our base is in Ankara Etimesgut. We provide cassette and ducted air conditioner 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

My cassette AC is leaking water into the ceiling. What should I do?

Turn off the unit and message us. It is usually caused by the condensate pump or a clogged drain pan, and is repaired on site without damaging the ceiling.

How is a ducted air conditioner maintained?

The fan, filter and coil are cleaned through the access panel, the drain and diffusers are checked, and airflow is measured.

Can a cassette AC be connected to a VRF system?

Yes. Cassette and ducted indoor units are used in both single split and VRF systems.

From 1 unit to 1,000 units, from a single provider.

Sales, installation, maintenance and repair for all brands and equipment. Nationwide across Türkiye.