If you serve customers who have gas furnaces in their homes, keep this troubleshooting flowchart close to the service counter and the phone. Train your staff on each step of the guide so they are prepared to answer any follow up questions a customer may have about their furnace.
Download the flowchart here, print it out and laminate it so it stays clean and easy to read. Learn more about how to serve a broad range of HVAC customers here.