What are the specs for this Pressure Switch?

The correct replacement for Goodman model GUPX050-3B 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 GUPX050-3B.

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 B1370126 Pressure Switch -0.40 in. w.c. N.O. for GUPX050-3B

Name: OEM Goodman B1370126 Pressure Switch -0.40 in. w.c. N.O. for GUPX050-3B
Brand: Goodman
SKU: GOODMAN-13316
Price: 34.95 USD
Availability: InStock

SKU: GOODMAN-13316 Brand: Goodman

$34.95 $45.95

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The Goodman B1370126 Pressure Switch is a genuine OEM draft-proving control for the GUPX050-3B gas furnace. It confirms proper induced-draft airflow before allowing ignition, ensuring combustion gases are safely vented. A weak inducer, blocked vent, or clogged condensate line will keep this switch from closing, safely preventing burner operation.

Specifications

Part Number: B1370126
Type: Single-stage air pressure switch
Set Point: -0.40 in. w.c. (inches of water column)
Action: Normally Open (N.O.), closes on negative pressure
Connection: Single hose port, 1/4 in. spade terminals
Fits: Goodman GUPX050-3B and compatible furnace models

OEM vs. Generic

The OEM Goodman B1370126 is factory-set to the precise -0.40 in. w.c. actuation point required by your furnace's control sequence. Aftermarket switches with an incorrect set point can cause nuisance lockouts or unsafe operation, so the OEM part is strongly preferred.

Installation Difficulty

Easy (2/5). Remove the hose, unplug the terminals, and swap the bracket. Inspect the pressure tubing for cracks or moisture and clear the condensate trap while you're in there.

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 B1370126 Pressure Sw...

$34.95

Frequently Asked Questions

Does this Pressure Switch fit my Goodman GUPX050-3B?

Yes. This is the factory-specified OEM pressure switch for the Goodman GUPX050-3B. 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 GUPX050-3B?

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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