Compare MAPP gas, propane and oxy-acetylene to understand which fuel is best for brazing, heating and HVAC/R service work.

Learn how to organise a portable oxy-acetylene torch setup for safe, efficient brazing on HVAC/R installation and service jobs.

Learn how to read HVAC gauges, understand pressure readings and avoid common mistakes when diagnosing refrigeration systems.

Learn which welding tools HVAC/R technicians use most, how brazing differs from welding, and what belongs in a reliable field kit.

Common signs of wear in torch tips, hoses and regulators, and how routine inspection can help prevent downtime and performance issues.

The differences between nitrogen purging and leak testing, including best practices for flow control, pressure management and system cleanliness.