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The Goodman 0130F00434 Pressure Switch is a genuine OEM dual (two-stage) air-proving switch calibrated at -0.67" and -1.15" WC for the AMEC961004CNAC furnace. It confirms proper draft-inducer airflow and venting before the ignition sequence begins, protecting against blocked flues and inadequate combustion air. A faulty pressure switch is a leading cause of furnaces that lock out, fail to ignite, or short-cycle on startup.
This genuine Goodman OEM switch is factory-calibrated to the exact set points your furnace's control board expects. Generic switches with slightly different trip pressures can cause intermittent lockouts or unsafe operation. Because the part directly governs combustion safety, OEM is the recommended choice.
Moderate. Requires disconnecting two or more pressure tubing ports and electrical connectors, then matching orientation exactly — roughly 20–30 minutes. Shut off gas and power first. Recommended for a competent DIYer or HVAC technician.