Ducted rooftop packaged unit on a commercial building roof

Rooftop unit maintenance and repair

On self-contained rooftop packaged units, we service the condenser, compressor, fan and economizer without disrupting store opening hours.

In shortA rooftop unit is a packaged air conditioner installed on the roof that combines cooling, heating and fresh air in a single cabinet. YOİ Mühendislik provides condenser washing, compressor and fan service, and belt, economizer and filter maintenance for rooftop units.

About rooftop units

Rooftop units used with duct systems in supermarkets, shopping malls, warehouses and gyms operate outdoors, so they are affected by dust, pollen and weather. Units that are not serviced before the season go into high-pressure alarm on the hottest days.

What we do

  • Condenser and evaporator washing
  • Compressor, contactor and protection tests
  • Fan motor, belt and bearing replacement
  • Economizer and damper adjustment
  • Filter replacement
  • Gas heater / burner check
  • Refrigerant pressure and superheat measurement
  • Duct connection and insulation check
YOİ Mühendislik technical team walking to rooftop HVAC units
Team and occupational safety planning for rooftop maintenance.

Pre-season checklist

  1. Condenser fins and fans
  2. Belt tension and bearings
  3. Filters and economizer
  4. Electrical connections and contactors
  5. Refrigerant pressures and currents
  6. Thermostat and automation

Buildings we serve

Shopping mallSupermarket chainWarehouse and logisticsGymFactoryCinema

Our base is in Ankara Etimesgut. We provide rooftop 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

Can rooftop maintenance be done while the store is open?

Condenser and outdoor maintenance can be done while the system is running; short shutdowns for fan and compressor work are scheduled outside working hours.

Do you offer multi-site contracts for retail chains?

Yes. We set up a single contract and a single reporting structure for branches in different provinces.

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

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