When performing annual maintenance or replacing an ignitor

The Lennox 18G89 Flame Sensor is a critical OEM replacement part designed to maintain the safety and operational integrity of residential and commercial gas furnaces

Common field indicators include a humming compressor that fails to start

This 60-inch snap-fit thermocouple is a universal replacement for most standing pilot systems in furnaces

Designed to support both the compressor (45 microfarad) and the condenser fan motor (7

Functional Devices RIBU1C-RD Relay When performing annual maintenance orThe Functional Devices RIBU1C RD is a professional grade enclosed pilot relay engineered for versatile control in building automation and HVAC systems. This 10 Amp SPDT relay features a multi voltage coil, accepting 10 30 VAC DC or 120 VAC, which eliminates the need for multiple stocking units on the truck. Encased in a durable NEMA 1 rated red housing, this unit is specifically designed for quick identification in fire alarm and emergency safety