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The B1370820 is a genuine Goodman blower-compartment door interlock safety switch, pre-wired with factory lead connectors for a plug-and-play replacement. This safety device cuts power to the blower and control circuit whenever the blower access panel is removed, protecting technicians and homeowners during service. It is a direct-fit OEM component for the Goodman/Amana AMV80704BXA multi-position gas furnace and many related 80% AFUE platforms that use the same cabinet.
This is a factory Goodman OEM switch built to the exact electrical rating and mechanical throw of the original. Unlike universal aftermarket switches that often require splicing and can trip prematurely, this OEM unit drops in with its original harness for a reliable, code-compliant repair. Choosing OEM protects your furnace's warranty and ensures the safety interlock behaves exactly as engineered.
Easy (1/5). Cut power at the breaker, remove the blower door, unplug the old switch, snap in the new one, and reconnect the leads. Typically a 10–15 minute repair with basic hand tools. If you are not comfortable working near line-voltage wiring, contact a licensed HVAC technician.