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Ships within 48 hours · Estimated delivery Sep 15 - Sep 20
If the furnace blower runs continuously while the burners remain off
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Premium American-Made Quality: Machined from domestic high-copper brass for superior corrosion resistance and durability compared to low-quality imports
this manual reset thermal switch is specifically designed for air intake or burner door monitoring
this tee features 3/8 SAE Flare connections on the run and a 1/4 MPT (Male Pipe Thread) center branch
Armstrong Furnace R43127-001 Flame Sensor If the furnace blower runsThe Armstrong Furnace R43127 001 Flame Sensor is a critical OEM replacement part designed for precision flame rectification in residential heating systems. This furnace flame sensor acts as a primary safety component, communicating directly with the integrated furnace control board to confirm burner ignition. If the sensor fails to detect the required microamp signal within the ignition trial period, the system triggers a safety lockout to prevent the