OEM Goodman -0.60" WC NO Pressure Switch for GKS91155DXAA — 20197310

Goodman 20197310 Pressure Switch (-0.60" WC, Normally Open)

The Goodman 20197310 pressure switch is a genuine OEM draft-proving safety switch for the Goodman GKS91155DXAA gas furnace. This normally-open switch closes at a set-point of -0.60 inches water column (WC), confirming the inducer motor has established proper venting airflow before the ignition sequence begins. If adequate draft isn't proven — due to a blocked vent, failing inducer, cracked hose, or clogged drain trap — the switch stays open and safely prevents ignition, protecting against flue-gas spillage.

Specifications

• OEM Part Number: 20197310
• Type: Air / draft pressure switch
• Set Point: -0.60" WC (water column)
• Contacts: Normally Open (NO), close on negative pressure
• Fits: Goodman GKS91155DXAA gas furnace

OEM vs. Generic

Pressure-switch set-point and contact configuration are matched to the furnace's specific venting design. The -0.60" WC rating and NO contacts must be exact — a mismatched switch will either fail to prove draft (no ignition) or prove it prematurely (a safety hazard). Genuine OEM guarantees the correct calibration and tubing ports; generics frequently differ. For this safety control, insist on OEM.

Install Difficulty: Moderate

Cut power, mark and swap the spade wires, transfer the pressure hose to the same port, and remount with the original screws. Manageable for an experienced DIYer — verify the -0.60" WC rating stamped on the switch matches the original before installing.