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This genuine OEM Goodman B1370176 pressure switch is a direct-fit replacement for the ADS80703ANA furnace and many compatible Goodman/Amana gas furnace models. It is a single-stage, normally-open draft/inducer pressure switch calibrated to trip at -0.47" water column. The switch monitors negative pressure created by the inducer motor and proves adequate venting before the control board allows ignition — a critical safety function that prevents the furnace from firing under a blocked-flue or failed-inducer condition.
This is the genuine Goodman OEM part, factory-calibrated to the exact -0.47" WC setpoint your furnace's control sequence expects. Generic or universal switches often carry a different trip pressure or hose-barb orientation, which can cause nuisance lockouts or false venting faults. For reliable cold-weather operation, the OEM switch is the recommended choice.
Easy (1/5). Replacement involves disconnecting power, removing the silicone tubing and two spade terminals, unscrewing the mounting screw, and reversing for the new switch. Most homeowners can complete this in under 15 minutes. Always shut off gas and electrical power before servicing.