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replacing the old seal with this precision-cut HVAC part restores factory-spec safety and performance
it guarantees exact form-fit-functionality for contractors performing high-stakes repairs on residential and commercial furnaces
Key Benefits Compatible with Armstrong 200
we recommend verifying your specific model’s parts manual to ensure this kit meets the required depth and clearance for your application
Carrier HH18HA138 Limit Switch replacing the old seal withThe Carrier HH18HA138 is a professional grade HVAC high limit switch engineered for precision thermal protection in Carrier, Bryant, and Payne gas furnaces and packaged units. As a normally closed (NC) disc style limit switch, it serves as a critical safety component by monitoring internal heat levels and interrupting the burner circuit if temperatures exceed safe operational parameters. This specific factory authorized part features an open