What are the specs for this Pressure Switch?

The correct replacement for Goodman model GUN125-5B — B1370107 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 GUN125-5B — B1370107.

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 -1.4" WC N.O. Pressure Switch for GUN125-5B — B1370107

Name: OEM Goodman -1.4" WC N.O. Pressure Switch for GUN125-5B — B1370107
Brand: Goodman
SKU: GOODMAN-13175
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-13175 Brand: Goodman

$24.95 $32.95

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Goodman B1370107 Air Pressure Switch

The Goodman B1370107 is a genuine OEM air pressure (draft) safety switch engineered for the GUN125-5B gas furnace and other compatible Goodman/Amana models. This normally-open switch monitors combustion airflow and inducer draft, closing at approximately -1.4 inches of water column to allow the ignition sequence to proceed. If venting is blocked or the inducer fails, the switch stays open and locks out the burner to protect your home.

Specifications

Set point: -1.4" WC (water column)
Configuration: Single-pole, normally open (SPST-NO)
Function: Combustion / draft proving safety switch
Fitment: Goodman GUN125-5B and compatible furnaces
OEM Part Number: B1370107

OEM vs. Generic

The OEM Goodman B1370107 is factory-calibrated to the exact -1.4" WC trip point your furnace expects, ensuring reliable ignition and code-compliant safety operation. Aftermarket universal switches may have a different set point or hose-barb orientation, risking nuisance lockouts. For safety-critical draft proving, we recommend the genuine OEM part.

Installation Difficulty

Easy (1/5). Typically a two-wire disconnect and single-screw swap with the sensing hose reattached. Always shut off gas and power before servicing. If you are unsure, consult a licensed HVAC technician.

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 -1.4" WC N.O. Pressu...

$24.95

Frequently Asked Questions

Does this Pressure Switch fit my Goodman GUN125-5B — B1370107?

Yes. This is the factory-specified OEM pressure switch for the Goodman GUN125-5B — B1370107. 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 GUN125-5B — B1370107?

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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