Concealed ceiling fan coil unit and chilled water pipes inside the suspended ceiling

Fan coil unit maintenance, repair and installation

We inventory each of the hundreds of fan coil units supplied by chillers and boilers, and carry out filter, valve and motor service on a planned basis.

In shortA fan coil unit is a terminal device that delivers chilled or hot water from a central chiller or boiler into a room through a coil and a fan. YOİ Mühendislik services fan coil units under contract or on a one-time basis: filter replacement, coil cleaning, drainage, valves, thermostats and fan motors.
Free Fan Coil Unit Maintenance Form (PDF)
A4 form with checklist, measurement table and signature fields.
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About fan coil units

Hotels, hospitals and office towers have a fan coil unit in every room. That makes fan coil maintenance a matter of quantity and planning: records must show which unit on which floor was serviced on which date. Seasonal changeover is critical in 2-pipe systems, while valve and control settings are critical in 4-pipe systems.

What we do

  • Filter cleaning and replacement (G4, nanofiber)
  • Coil and drain pan cleaning
  • Fan motor and capacitor replacement
  • Motorized valve and actuator service
  • Thermostat and room control unit replacement
  • Air purging and flow balancing
  • Floor-by-floor equipment inventory
  • New fan coil unit installation and commissioning
YOİ Mühendislik team in the chiller plant room that supplies water to the fan coil units
The fan coil system is handled together with the chiller and pump group.

Fan coil unit maintenance checklist

  1. Filter condition and pressure drop
  2. Coil fins and drain pan
  3. Drain line and pump (if any)
  4. Fan motor current and bearing noise
  5. Valve open/close and thermostat
  6. Water inlet-outlet temperature difference

Buildings we serve

HotelHospitalOffice towerResidenceDormitoryPublic building

Our base is in Ankara Etimesgut. We provide fan coil 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 a fan coil unit filter be replaced?

Cleaning every 3-6 months depending on use and replacement once a year are recommended. In hospitals and hotels the interval is shorter.

Fan coil unit is not cooling. What could be the cause?

The most common causes are a closed valve, an unbled line, a clogged filter, a faulty thermostat or insufficient water supply from the chiller.

Do you offer contracts for hundreds of fan coil units?

Yes. We take a floor-by-floor inventory and schedule maintenance according to the hotel's or hospital's occupancy plan.

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

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