The Hot Air Chimneys are functional as the optimum quality ventilation systems, which can improve natural ventilation within the whole building. These provide heating & cooling by making use of heat from the sun. Their task is to boost the natural stack effect ventilation. In various applications, they are utilized as renewable power generation source. Hot Air Chimneys, manufactured & supplied by UST Enterprises are proffered with high thermal absorbency. Apart from creating cooling & ventilation, these are also applicable for electricity generation. The energy output and efficiency of the system are so appreciable.