What are the specs for this Pressure Switch?

The correct replacement for Goodman model GUN100-4B — 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 GUN100-4B — 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 NO Pressure Switch for GUN100-4B — B1370107

Name: OEM Goodman -1.4" WC NO Pressure Switch for GUN100-4B — B1370107
Brand: Goodman
SKU: GOODMAN-13156
Price: 34.95 USD
Availability: InStock

SKU: GOODMAN-13156 Brand: Goodman

$34.95 $44.95

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The Goodman B1370107 Pressure Switch is a direct-fit OEM replacement for the Goodman GUN100-4B furnace and compatible Goodman/Amana/Janitrol models. This normally-open (NO) air-proving switch closes when the induced-draft blower establishes proper venting, allowing the ignition sequence to proceed. A faulty switch is a leading cause of no-ignition and lockout faults.

Specifications

Setpoint: -1.4 in. W.C. (water column)
Contact type: Normally Open (NO)
Function: Draft / air-flow proving safety switch
Fits: Goodman GUN100-4B and compatible models
OEM Part Number: B1370107

OEM vs. Generic

The OEM B1370107 is factory-calibrated to the exact -1.4" WC trip point for reliable, safe operation. Our generic equivalent matches the setpoint and hose-port configuration at a lower price for out-of-warranty repairs. Both include a warranty.

Installation Difficulty

Easy. Disconnect power, unplug the two wire leads and the rubber hose, remove two screws, and reverse for the new switch. Typically a 15-minute job.

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 NO Pressure...

$34.95

Frequently Asked Questions

Does this Pressure Switch fit my Goodman GUN100-4B — B1370107?

Yes. This is the factory-specified OEM pressure switch for the Goodman GUN100-4B — 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 GUN100-4B — 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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