James mentions that the most important factors to a home comfort system are airflow and _________.

True or False: By utilizing the proper tools with proper diagnostics, you can better determine when parts may fail even if they are currently working.

Which of the following components should you inspect to see if they are nearing failure status?

A piece of advice that James offers to technicians is to look at yourself as the _________ mechanic and not the parts changer.

True or False: The “grandmother rule” states that you should make every recommendation as if you were working in your grandmother’s house.