Rinnai infra-red gas grills use 2 types of heat: direct and radiant. This helps to achieve set temperature range and even heat distribution, which are the main contributors to flawless grilling. Salamanders are top grills that are used to finish or brown dishes. They can be used to crisp up the top of dishes, toast sub sandwiches, or melt cheeses on top of pizzas. For professional kitchens, salamander units can be quicker and more efficient than broiling in an oven.