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The Goodman 20197308 is a genuine OEM air pressure switch built as a direct-fit replacement for the AMVC951155DXAD two-stage variable-speed gas furnace and compatible Goodman/Amana models. With its sensitive -0.10" WC set point, it typically serves as the low-fire (first-stage) draft-proving switch, confirming adequate venting before the furnace fires on low heat. If your furnace won't start on first stage or short-cycles on low fire, this switch is a prime suspect.
The low -0.10" WC threshold makes precise calibration essential. This factory OEM switch is set to Goodman's exact specification so it proves draft reliably without nuisance-tripping on a two-stage system. Generic switches rarely match this sensitive set point accurately, leading to intermittent no-heat calls. Choose OEM for dependable low-fire operation.
Easy (2/5). Plan on 15–20 minutes: shut off power at the breaker, note which tubing connects to this switch (there are often multiple pressure switches — label them), transfer the spade terminals and silicone hose, and mount the new switch. Verify the tubing is free of condensate and correctly routed before restoring power.
Ships fast with our fitment guarantee. Email info@nationalhvacparts.com with your full model number for compatibility confirmation.