For service technicians maintaining Williams direct vent wall furnaces or gravity heating systems, the Williams P285500 Red Ignitor Push Button is the essential OEM replacement part for manual pilot ignition. This piezoelectric spark igniter generates the high-voltage discharge necessary to bridge the electrode gap and ignite the standing pilot across various Williams Comfort Products gas-fired appliances. Engineered for heavy-duty cycling, the P285500 features a distinct red high-visibility housing and a standard dual-terminal configuration for secure lead-wire connectivity. Installation is straightforward for contractors during seasonal preventive maintenance: once the gas supply is isolated and the faceplate removed, this manual spark igniter mounts via standard bracket screws. It is the direct replacement for the ignition assemblies in Monterey Top Vent Gravity Furnaces, Forsaire Counterflow units, and specific heater models including the 1403, 2003, and 3003 series. Utilizing OEM HVAC replacement parts ensures factory-spec fitment and prevents the nuisance service calls associated with poorly gauged aftermarket alternatives that fail to provide a consistent spark in cold-startup conditions. Key Benefits for Professionals: Universal Compatibility: Fits high-volume Williams series such as the 1403821, 1413821, 1433821, and 1453821. Piezoelectric Reliability: Delivers a consistent manual spark for standing pilot ignition without requiring external electrical power. High-Visibility Design: The red push-button interface allows for rapid identification during emergency service or lighting procedures. Direct OEM Fit: Maintains the safety profile of the original equipment, ensuring proper clearance and electrode gap alignment. Durable Construction: Built to withstand the high-temperature environments of direct vent wall furnaces and floor furnaces. Common Questions & Technical Support: Which Williams furnace models use the P285500 ignitor? This part is widely used in many Williams wall heaters, specifically Monterey Top Vent (2509, 3509, 5009), Forsaire Counterflow (4007731, 6007731), and various Floor Furnaces (4505A, 6505A). Can this part replace electronic ignition systems? No, the P285500 is a manual piezoelectric igniter designed for systems with standing pilots. It is not compatible with intermittent pilot or hot surface ignition modules. Why is my push-button ignitor not creates a spark? Check for carbon buildup on the electrode tip or a loose connection at the ceramic insulator before replacing the unit. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
