Since 1993, Webster has manufactured and marketed multi-fuel boiler-burners for commercial heating, industrial process steam and drying applications. Webster burners provide the heat source for the transformation of water to potable hot water, hot water for heating, and steam for heating and process applications. The vast majority of Webster's burners are used in boiler assemblies. In late 1999 Webster made a modification to its standard burners that has introduced Webster as a supplier of direct fired air heater burners for process industries. These are food baking, paint curing, metal treating, and most any application requiring high turndown direct fired gas burners. In 2000 Webster obtained an Underwriters Laboratories certification for its control panel department. This has opened a new market for UL certified panels in various markets