Laars Heating Systems E2103600 Sensor 321142-301 the R40154B010 (functionally identical to

the R40154B010 (functionally identical to 40154B-010) prevents the heat exchanger from reaching critical temperatures by interrupting the burner circuit when airflow is restricted

Direct OEM Integration: Eliminates the mechanical issues associated with universal or third-party components by providing an exact physical match for Carrier furnace parts

Direct OEM Fitment: Eliminates the risk of vibration or bypass associated with universal membranes that lack the exact 3-5/8" outer diameter

Why is my relief valve still dripping after cleaning the checks

This model features a 1 1/4" BSPT connection and is equipped with a single pole

Laars Heating Systems E2103600 Sensor 321142-301 the R40154B010 (functionally identical toThe Laars Heating Systems E2103600 Sensor is a critical 15' water temperature sensor designed for precision monitoring in high efficiency hydronic systems. Engineered for seamless integration with Laars boiler control boards, this thermistor based probe provides real time resistance feedback to the primary logic controller, ensuring accurate secondary loop or tank temperature tracking. The extended 15 foot lead allows for flexible aquastat placement