The Laars Heating Systems RW2002300 Hot Surface Ignitor with Gasket is a critical component that facilitates the ignition process in heating systems, particularly those manufactured by Laars. The hot surface ignitor works by applying high heat to a surface through electrical resistance, which ignites the gas or fuel-air mixture inside the combustion chamber. https://www.partshnc.com/hot-surface-ignitor-wgasket