Islam Yassin Ahmed Altayeb2018-07-092018-07-092018-05http://hdl.handle.net/123456789/12189In this study I have done this project as a development of the idea of multi-function water conditioner, which works as a conditioner and heater at the same time to maintain the temperature of the room to a certain degree and this model was designed using the control Arduino to control the water conditioner includes a water pump, two-speed fan, heater and LCD to adjust the temperature. This mode is designed to comply with high and low temperatures and adjusted automatically to suit temperature changes. This can be operated automatically or manually.enMultifunction air Conditioner - Control CircuitThesis