Are you experienced in installing gas detection systems or carbon monoxide alarms?

Can you explain the process of purging air from a gas system?

How do you handle situations where customers want to relocate gas appliances?

Have you ever had to repair or replace a gas valve?

Are you knowledgeable about gas appliance venting requirements?

Can you describe a time when you had to replace an old gas line with a new one?

How do you ensure proper gas pressure in a system?

Have you ever worked on gas systems in multi-story buildings? If so, how did you handle the vertical piping?

Can you explain the process of connecting gas appliances to gas supply lines?

Are you familiar with different types of gas regulators and their functions?