Goodman 0130F00042P Furnace Air Pressure Switch – Genuine OEM -0.40" WC 24V Plastic Housing

The Goodman 0130F00042P Pressure Switch is the critical safety "sentinel" responsible for verifying proper combustion venting in your gas furnace. This 24V vacuum-actuated switch monitors the negative pressure created by the inducer motor; it will only "close" its internal electrical contacts if it detects a safe draft of -0.40" WC. Specifically engineered for Goodman, Amana, and Janitrol furnace series, this switch acts as a mandatory safety gatekeeper. If the vent is blocked, the inducer fails, or the heat exchanger is compromised, the switch stays "open," instantly preventing the ignition sequence to protect your home from hazardous flue gas backup.

Key Features and Function:

• Precision Draft Management: Factory-calibrated to trip at exactly -0.40" Water Column (WC) to ensure the furnace only fires under optimal venting conditions.
• Genuine OEM Reliability/Fitment: Features the exact mounting footprint and vacuum port orientation required for a "drop-in" installation on Goodman collector boxes.
• Safety Logic Integration: Directly communicates with the furnace control board to trigger "Pressure Switch Open" fault codes, ensuring rapid and accurate troubleshooting.
• Durable Plastic Construction: Engineered with high-grade, heat-resistant plastic and a sensitive internal diaphragm designed to endure thousands of heating cycles without calibration drift.

Product Details and Key Specifications:

• Part Number: 0130F00042P (Replaces 0130F00042, B1370142)
• Manufacturer: Goodman / Amana (Genuine OEM)
• Part Type: Air Pressure Switch / Vacuum Switch
• Setpoint: -0.40" WC (Fixed)
• Voltage: 24 VAC
• Contacts: Normally Open (NO)
• Material: High-Temp Plastic Housing
• Connector: 1/4" Male Quick-Connect Terminals
• Shipping Weight: 0.3 lbs

🛠️ HVAC Depot Pro Tip: The "Hose and Port" Check

If your furnace is throwing a "Pressure Switch" error code, the switch itself is rarely the failed part. Before replacing the 0130F00042P, perform a Diagnostic Check on the rubber vacuum hose and the small plastic port on the inducer housing. Use a small wire or paperclip to ensure the port is clear of rust or debris. If the hose is cracked or the port is clogged, the switch cannot "sense" the vacuum and will stay open. Always ensure the hose is seated tightly to prevent "nuisance" tripping.

Cross-Reference & Compatibility:

The 0130F00042P is a direct OEM replacement for the following part numbers:

• OEM Numbers: 0130F00042, 0130F00042P, B1370142, B13701-42
• Honeywell: IS20400-3814
• Aftermarket Cross: ClimaTek 0130F00042, Mars 39042

Extensive Model Compatibility List:

Note: Use 'CTRL+F' to search for your specific model:

• Goodman GMS8 Series: GMS80403AN, GMS80603AN, GMS80804BN, GMS81005CN
• Goodman GDS8 Series: GDS80403AX, GDS80603AX, GDS80804BX, GDS81005CX
• Goodman GMH95 Series: GMH950453BX, GMH950703BX, GMH950904CX
• Amana AMES8 Series: AMES80403AN, AMES80603AN, AMES80804BN
• Janitrol GMP Series: GMP050-3, GMP075-3, GMP100-3, GMP125-4
• Package Units: GPG, GPH, APG series (Used for combustion air verification)