GEN-TES Co.Ltd. was established in January 1979 and undertook Mechanical Engineering design & design consultancy, preparation of tender documents and construction supervision of buildings. Starting from year 2010, the company added Electrical Engineering design, Dispute Adjudication & Dispute Avoidance/Adjudication, Claim Management and Contract Management services as well to its working field. 

In the scope of Mechanical Engineering services there are;

– Heating, ventilation, air conditioning (HVAC)
– Refrigeration 
– Drying processes 
– Energy conservation and heat recovery 
– Central heating and cooling plants 
– Condensation control 
– Swimming Pool and Ponds design  
– Automatic controls and building management systems (BMS) 
– Hot & cold domestic water, drainage & storm water, sterile water 
– Central sterilization 
– Piped medical gases, pressurized air & vacuum 
– High & low pressure steam
– Solar energy  
– Fire extinguishing 
– Smoke exhaust & pressurization 
– Water filtering & softening 

Electrical Engineering services include the design, preparation of tender documents and construction supervision of;

– Low voltage (interior-exterior lighting, power and socket, energy distribution for mech. equipments, grounding, lightning, generator, UPS)
– Weak current (data, telephone, TV ve satellite TV, fire detection & alarm, dubbing-announcement broadcast, security installations, CCTV, card access)
– Transformers
– Medium voltage lines 
– Lifts 

GEN-TES provides its clients with high quality engineering services through quality management systems established in the firm and is capable of providing Professional Liability Insurance when required. GEN-TES, through its former mother company ODTM Co. Inc., has been accepted to the FIDIC Business Integrity Management System Pilot Program. *

Among the projects which are completed by GEN-TES until present mainly are health care facilities, high-ranking hotels, office buildings, shopping centers, educational facilities, industrial complexes, social and sports facilities, commercial buildings, military facilities, culture & arts buildings, airport facilities, central plants & exterior networks, laboratories, CBR (chemical-biological-radioactive contamination) protected shelters and similar.


GEN-TES Co.Ltd. is a member of MERGE , which is an engineering co-operation group of Engineering Consultants in Europe and which accepts two firms from each European country as members. GEN-TES has also acquired a high level of knowledge and experience in international Engineering Consultancy applications through its Managing Partner’s intensive voluntary involvement in FIDIC (since 1992) and EFCA (since 2001) studies. 

* The relevant pilot program has been applied in eight countries including Turkiye and ODTM (GEN-TES) has been one of the two firms from Turkiye.
** FIDIC, International Federation on Consulting Engineers
*** EFCA, European Federation of Consulting Engineering Associations