1. Objective and subjective approaches were selected for collecting the data in most of the studies. The objective approach comprised of measurements and monitoring of thermal comfort parameters, i.e. air temperature, relative humidity, air velocity, mean radiant temperature, bulb temperature and ventilation measurements: air exchange rate, age of air and air exchange effectiveness. Survey forms were designed to determine the occupants' perception of thermal comfort. In subjective assessments, questionnaires were developed to secure the objectives of researches.