Met with Chris who showed us to the mechanical room. We inspected a Weil-McLain gas boiler. We turned on the unit and observed it operate through its heating cycle. Opened up the combustion chamber and tested its start up sequence procedure. Burners are dirty and in need of a cleaning service. Took a video to show the customer as there is a slight flame roll out issue occurring. Explained the need for immediate attention and that the unit can not remain in that state. Took pictures to document existing conditions. Overall the unit is in excellent condition with a burner cleaning service needed. Worked up a price and discussed it with Chris. Chris said that today is not a good day but that he will call to setup an appointment next week.