Welcome to PowerWash 101: The Fundamentals of power washing. This course is brought to you by PowerWash University and is intended to be a comprehensive introduction to using a power washer safely, effectively, and efficiently. Students should expect to gain a working knowledge of the basic make up and use of a cold water power washer. PowerWash 101 is considered foundation for beginners or those people looking to expand their knowledge of working with a power washer.