Browse a selection of reliable furnace parts at F.W. Webb. Keep a furnace running smoothly with durable components, including burner and pilot orifices, condensate kits, and burners. A flame sensor adds an extra safety measure to an existing unit—it creates a current of electricity when the gas ignites to provide a level of micro amps that prevent explosions. Use our helpful filters to sort furnace components by size, material, end connection, and horsepower. Explore sturdy parts from trusted makers Source 1, Thermo Pride, and Nortek to find the right fit for your furnace.