Through advances of Internet-of-Things (IoT) technologies, smart home concepts have become increasingly prevalent, and they are gradually being adapted in society. Apart from cost efficiency and user convenience, implementing monitoring and control in a smart home has the potential to also increase energy efficiency. In this paper, a web-based monitoring and temperature control for an air conditioning (AC) system is proposed. The long-ranged AC control system consists of three ZigBee devices that enable wireless communication between the temperature, remote, and router modules which sends data over the internet using ESP8266. A web-based interface was also developed to display room temperature, last temperature of the AC, and a button to activate/deactivate the AC. The results showed that the prototypical system fulfilled the expected functionality, and that ZigBee is a robust choice of communication protocol.