
Laars Heating Systems RE2337501 Sensor
The Laars RE2337501 Temperature Sensor is a critical Domestic Hot Water (DHW) sensor engineered precisely for the Laars Mascot 2 series of high-efficiency boilers and volume water heaters. This 1/4" NPT temperature sensor provides high-accuracy thermal feedback to the control board, preventing temperature fluctuations and ensuring the unit operates within specified modulation parameters. As a genuine Laars Heating Systems replacement part, it utilizes a thermistor element calibrated for the specific resistance curves required by the Mascot 2 heat exchanger and DHW circuits. Unlike universal probes, this OEM boiler sensor eliminates compatibility issues with the wiring harness and prevents common diagnostic fault codes associated with improper resistance readings. For technicians maintaining residential and commercial DHW systems, replacing a fouled or drifting sensor with the RE2337501 is necessary to restore optimal BTU input and prevent excessive cycling or overheating conditions in the potable water loop.
Technical Benefits for Contractors
- Precise Modulation: Delivers exact resistance data to the Laars Mascot 2 control board for tighter temperature differentials.
- NPT Thread Integrity: The 1/4" NPT connection ensures a pressure-tight seal in high-demand domestic water applications.
- Direct OEM Fitment: Eliminates the need for field modifications or splicing, maintaining the integrity of the factory wiring harness.
- System Efficiency: Reduces boiler short-cycling by providing real-time data for domestic hot water priority functions.
Common Installation Questions
What are the signs of a failing Laars DHW sensor?
Technicians typically see "DHW Sensor Open" or "DHW Sensor Shorted" codes on the Mascot 2 display, or experience erratic outlet temperatures despite stable flow rates.
Can this be used for the CH (Central Heating) loop?
This specific part is indexed for the Domestic Hot Water (DHW) circuit; always verify the resistance curve against the boiler's service manual if attempting to use it for other sensor ports.
Is thread sealant required for the 1/4" NPT fitting?
Yes, apply a high-quality thread sealant or PTFE tape suitable for hydronic heating temperatures to ensure a leak-proof installation into the tapping.
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.
Laars Heating Systems RE2337501 Sensor
The Laars RE2337501 Temperature Sensor is a critical Domestic Hot Water (DHW) sensor engineered precisely for the Laars Mascot 2 series of high-efficiency boilers and volume water heaters. This 1/4" NPT temperature sensor provides high-accuracy thermal feedback to the control board, preventing temperature fluctuations and ensuring the unit operates within specified modulation parameters. As a genuine Laars Heating Systems replacement part, it utilizes a thermistor element calibrated for the specific resistance curves required by the Mascot 2 heat exchanger and DHW circuits. Unlike universal probes, this OEM boiler sensor eliminates compatibility issues with the wiring harness and prevents common diagnostic fault codes associated with improper resistance readings. For technicians maintaining residential and commercial DHW systems, replacing a fouled or drifting sensor with the RE2337501 is necessary to restore optimal BTU input and prevent excessive cycling or overheating conditions in the potable water loop.
Technical Benefits for Contractors
- Precise Modulation: Delivers exact resistance data to the Laars Mascot 2 control board for tighter temperature differentials.
- NPT Thread Integrity: The 1/4" NPT connection ensures a pressure-tight seal in high-demand domestic water applications.
- Direct OEM Fitment: Eliminates the need for field modifications or splicing, maintaining the integrity of the factory wiring harness.
- System Efficiency: Reduces boiler short-cycling by providing real-time data for domestic hot water priority functions.
Common Installation Questions
What are the signs of a failing Laars DHW sensor?
Technicians typically see "DHW Sensor Open" or "DHW Sensor Shorted" codes on the Mascot 2 display, or experience erratic outlet temperatures despite stable flow rates.
Can this be used for the CH (Central Heating) loop?
This specific part is indexed for the Domestic Hot Water (DHW) circuit; always verify the resistance curve against the boiler's service manual if attempting to use it for other sensor ports.
Is thread sealant required for the 1/4" NPT fitting?
Yes, apply a high-quality thread sealant or PTFE tape suitable for hydronic heating temperatures to ensure a leak-proof installation into the tapping.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Laars RE2337501 Temperature Sensor is a critical Domestic Hot Water (DHW) sensor engineered precisely for the Laars Mascot 2 series of high-efficiency boilers and volume water heaters. This 1/4" NPT temperature sensor provides high-accuracy thermal feedback to the control board, preventing temperature fluctuations and ensuring the unit operates within specified modulation parameters. As a genuine Laars Heating Systems replacement part, it utilizes a thermistor element calibrated for the specific resistance curves required by the Mascot 2 heat exchanger and DHW circuits. Unlike universal probes, this OEM boiler sensor eliminates compatibility issues with the wiring harness and prevents common diagnostic fault codes associated with improper resistance readings. For technicians maintaining residential and commercial DHW systems, replacing a fouled or drifting sensor with the RE2337501 is necessary to restore optimal BTU input and prevent excessive cycling or overheating conditions in the potable water loop.
Technical Benefits for Contractors
- Precise Modulation: Delivers exact resistance data to the Laars Mascot 2 control board for tighter temperature differentials.
- NPT Thread Integrity: The 1/4" NPT connection ensures a pressure-tight seal in high-demand domestic water applications.
- Direct OEM Fitment: Eliminates the need for field modifications or splicing, maintaining the integrity of the factory wiring harness.
- System Efficiency: Reduces boiler short-cycling by providing real-time data for domestic hot water priority functions.
Common Installation Questions
What are the signs of a failing Laars DHW sensor?
Technicians typically see "DHW Sensor Open" or "DHW Sensor Shorted" codes on the Mascot 2 display, or experience erratic outlet temperatures despite stable flow rates.
Can this be used for the CH (Central Heating) loop?
This specific part is indexed for the Domestic Hot Water (DHW) circuit; always verify the resistance curve against the boiler's service manual if attempting to use it for other sensor ports.
Is thread sealant required for the 1/4" NPT fitting?
Yes, apply a high-quality thread sealant or PTFE tape suitable for hydronic heating temperatures to ensure a leak-proof installation into the tapping.
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.












