Trouble Shooting Calculator for Air Conditioning
and Refrigeration Systems

This tool is used for trouble shooting air conditioning and refrigeration systems. On the front and back sides of the guide is a comprehensive chart with 19 categorized symptoms, possible causes and repairs. This is a very useful tool for troubleshooting almost any type of problem. This item is made of thick cardboard stock with metal corner rivets and measures 10 inches tall by 4 inches wide.