York S1-LAPS120A Light Bulb 115V is a replacement illumination component designed for compatible HVAC equipment and service applications. It operates by converting 115-volt electrical power into visible light, providing clear illumination within the equipment or control area when needed. Designed for use with compatible York heating and cooling systems, it supports convenient inspecti... https://www.partshnc.com/s1-laps120a-york-light-bulb-wpower-supply-115v