The average Air Liquide salary ranges from approximately $30,000 per year for Technician to $250,000 per year for Maintenance Planner. Average Air Liquide hourly pay ranges from approximately $12.00 per hour for Truck Driver to $22.50 per hour for Operator.he average Air Liquide salary ranges from approximately $30,000 per year for Technician to $250,000 per year for Maintenance Planner. Average Air Liquide hourly pay ranges from approximately $12.00 per hour for Truck Driver to $22.50 per hour for Operator.