Air-cooled TIG torches use ambient air to dissipate heat generated during welding. They are simpler in design, lighter, and more portable, making them suitable for light to medium-duty welding tasks. These torches are typically used with lower amperage settings, generally up to 200 amps, and are ideal for fieldwork or situations where a water supply is not available. The air-cooled design results in a bulkier torch handle, as it requires more material to manage heat.
Water-cooled TIG torches, on the other hand, use a water-circulation system to cool the torch. This system includes a water cooler, hoses, and a pump to circulate water through the torch head. Water-cooled torches are more efficient at heat dissipation, allowing them to handle higher amperage, often exceeding 250 amps, and are suitable for heavy-duty or continuous welding applications. They have a smaller, more ergonomic handle due to the efficient cooling, which reduces operator fatigue.
The choice between air-cooled and water-cooled torches depends on the welding application, amperage requirements, and work environment. Air-cooled torches are preferred for their simplicity and portability, while water-cooled torches are chosen for their superior cooling capacity and ability to handle high-amperage tasks.