What are the specs for this Pressure Switch?

The correct replacement for Goodman model GUPX100-5B — B1370126 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number GUPX100-5B — B1370126.

Is this pressure switch compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Goodman

OEM Goodman -0.40" WC Pressure Switch for GUPX100-5B — B1370126

Name: OEM Goodman -0.40" WC Pressure Switch for GUPX100-5B — B1370126
Brand: Goodman
SKU: GOODMAN-13327
Price: 26.95 USD
Availability: InStock

SKU: GOODMAN-13327 Brand: Goodman

$26.95 $34.95

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The Goodman B1370126 Pressure Switch is a genuine OEM air-proving switch rated at -0.40 inches of water column, normally open, used to confirm proper inducer draft before the burners fire on GUPX100-5B gas furnaces. If your furnace runs the inducer but never lights, a stuck or failed pressure switch is a frequent culprit.

Specifications

OEM Part Number: B1370126
Setpoint: -0.40 in. WC
Configuration: Single-stage, normally open (NO)
Function: Combustion / draft air-proving switch
Fits: Goodman GUPX100-5B gas furnace
Brand: Goodman (OEM)

OEM vs. Generic

The OEM B1370126 is set to the precise -0.40" WC threshold matched to the GUPX100-5B inducer and venting. A generic switch with a different setpoint may close too early (allowing ignition with inadequate draft) or refuse to close, causing repeated no-heat lockouts. For correct and safe operation, use the OEM switch.

Installation

Difficulty: Easy (2/5). Disconnect the two low-voltage wires and the rubber pressure tube, remove one or two mounting screws, and reverse to install the new switch. Plan 15–25 minutes. Inspect the pressure tube and inducer port for condensate or blockage while you are in there. Always cut power and gas before servicing.

Compatible with Goodman GUPX100-5B. Verify -0.40" WC and part number B1370126 before ordering.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman -0.40" WC Pressure S...

$26.95

Frequently Asked Questions

Does this Pressure Switch fit my Goodman GUPX100-5B — B1370126?

Yes. This is the factory-specified OEM pressure switch for the Goodman GUPX100-5B — B1370126. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the pressure switch on my Goodman GUPX100-5B — B1370126?

Difficulty: Medium (20–30 min)
Step 1: Turn off power. Step 2: Locate pressure switch near draft inducer. Step 3: Note tubing orientation. Step 4: Disconnect tubing and wires. Step 5: Remove screw, install new switch. Step 6: Reconnect tubing and wires, restore power.

My furnace shows a pressure switch error. What do I replace?

Furnace LED showing pressure switch error = switch not detecting draft inducer airflow. Try first: clear the rubber tubing to the switch (often clogged with condensation). If problem persists, replace the pressure switch.

Is this pressure switch compatible with Bryant or Payne too?

Many Goodman parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Goodman pressure switch?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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