Peerless Boiler 54156 System Sensor

The Peerless Boiler 54156 is a 12K ohm temperature sensor used in hydronic boiler systems to provide accurate resistance-based temperature feedback to the control board. This allows the boiler to properly regulate water temperature, adjust firing rate, and maintain stable heating performance. When this sensor begins to drift or fail, common symptoms include short cycling, inconsistent heat output, ignition issues, or system lockouts.

This component is designed for HVACR boiler applications that require a 12K ohm thermistor input, commonly found in Peerless systems. It is typically installed on the supply line or heat exchanger area depending on the boiler configuration. During diagnostics, technicians should always verify resistance at ambient temperature to confirm whether the sensor is out of specification before replacement.

Key benefits:

• Delivers accurate 12K ohm temperature feedback for boiler control systems
• Helps maintain stable and efficient hydronic heating performance
• Reduces short cycling and control-related faults
• Direct replacement for compatible Peerless boiler sensor setups
• Ensures reliable communication with the boiler control board

Common questions:
What does this sensor do? It monitors water temperature and sends resistance feedback to the control system.
How do I know it’s bad? Unstable heating performance or incorrect resistance readings are typical signs.
Does it need to match exactly? Yes, it must be a 12K ohm thermistor to function properly in compatible systems.

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.