The Eastman hot surface ignitor is manufactured using premium silicon nitride for long-lasting performance in high-temperatures. This universal ignitor is a replacement part for use in gas-fired appliances like furnaces, water heaters and boilers, compatible with over 150-OEM models. It can also be a good upgrade for silicon carbide ignitors, the new hot surface nitride ignitor will provide unparalleled performance for many seasons of use. Made right. Made to last.