Many researchers in thermal comfort area mainly focus on user's thermal sensation ignoring the importance of thermal preference. This study investigates the impact of thermal preference of the user on their perception of user's comfort and satisfaction. Field studies of thermal comfort were applied in two contexts of Norwegian personal offices and British open plan offices. Environmental measurements, survey questionnaires and follow up interviews were applied. Qualitative and quantitative methods of analysis were applied. The results indicated that overall, users' desire to adjust the thermal environment, including temperature, air quality and air movement, highly impacted their satisfaction and comfort level. Comfortable and satisfied users had no or low preference to adjust the thermal environment (temperature, air quality and air movement), while uncomfortable and dissatisfied occupants had a great preference to control the thermal environment. 89% of the satisfied and 77% of the comfortable respondents wanted either no change or a slight thermal adjustment. 100% of the dissatisfied and 100% of the comfortable participants wanted to change the temperature or ventilation. 85% of the dissatisfied and 73% of the uncomfortable respondents wanted more than a slight change. The study emphasises the importance of thermal preference in thermal comfort research.