From the study of cooler and air condition subject, in the advanced professional certificate electrical power program In experiment of cooler and air condition subject, has a problem is lack of equipment in experimental Because in the cooler and air conditioning room the equipment is damaged Then bring the problem to creative demonstration of air conditioning and a demonstration of the cooler For instructional media of cooler and air condition subject Therefore, create the demonstration of air conditioning and demonstration of water cooler machine up To be able to study the work and join circuit of a range of air conditioning and cooler The demonstration of air conditioning with the standard of energy saving EER is 11.33, which in criterion energy saving is number 5 Demonstration of the cooler the standard of energy saving EER is 10.41 ,which in criterion energy saving is number 4 The survey on the contentment structure of a demonstration of air conditioning and water cooler. The evaluation results in good level. The survey on the contentment working of a demonstration of air conditioning and water cooler. Which evaluation results in good level.