Still confused about how gas appliances really work? “Gas Appliances: Theory and Product Choices” will take an in-depth look at the principles like: Fuel Characteristics, Combustion Principles, Gas Piping Systems, Categories of Appliances, Appliance Standards, Principles of Venting. If you understand these principles you will be able to understand why gas appliances perform the way they do and it will help you determine what to do about it. This course is perfect for anyone that wants to completely understand the dynamics of gas appliances.