Renewable energy is now a trending topic in research as a source of energy that free of pollution and alternative energy sources to substitute fossil energy sources. Research on renewable energy has always been developed to support energy security. Wind is one of the renewable energy sources that can be utilized to generate electrical energy. In this research will converting residual wind from air conditioning to electrical energy again. The advantage of using the exhaust from the air conditioning blower is that it has a relatively stable wind speed every time, although not as big as wind speeds available in nature. From the measurement with anemometer obtained the greatest wind speed is 6 m/s when its distance of 4 cm from the blower, and power of air conditioner 2,5 horsepower (HP) at temperature 16°C. Turbine can convert wind energy into electrical energy. The wind turbine is placed in front of the air conditioner blower, then the turbine is combined with the generator. Wind output from the blower is spread in all way, so made turbine type L Savonius. Generators used are a direct current generator (DC) and alternating current generator (AC). At the time testing, used Air Conditioner with power 0,5 HP, 1 HP, and 2,5 HP. In the test with air conditioner 0,5 HP obtained output voltage from the ac generator is 19,5 V and current is 0,65 A. Test using dc generator get output voltage is 35 V and the current is 0,37 A. In the test with air conditioner 1 HP obtained output voltage from the ac generator is 24 V and current is 0,52 A. Test using dc generator get output voltage is 37 V and current is 0,34 A. In the test with air conditioner 2,5 HP obtained output voltage from the ac generator is 24 V and current is 0,53 A. Test using dc generator get output voltage is 38 V and current is 0,34 A. Value of the output voltage of the generator is influenced by the amount of AC power consumption. Amount of voltage generated by the generator may can be used to turn on the surface-mount device light-emitting diode (SMD LED).