What are the symptoms of a failing indoor coil thermistor

The Lennox 49M84 Flame Sensor is a critical OEM replacement part designed for precision flame rectification in gas-fired heating systems

Key Benefits Efficient Fuel Combustion: Engineered for precise air-fuel ratios

Its 24-volt power requirements and low power consumption profile make it ideal for integration with standard HVAC transformers and control boards

Reznor 204327 Switch Els PW 17895 What are the symptoms ofThe Reznor 204327 SPDT Pressure Switch is a critical safety control designed for precise combustion air pressure monitoring in commercial and industrial gas fired unit heaters. Featuring an SPDT (Single Pole Double Throw) configuration, this switch provides versatile electrical circuit control, ensuring that the ignition sequence only initiates when the proper venting draft is established. Built for high demand HVAC environments, the Reznor 204327 is