What are the specs for this Pressure Switch?

The correct replacement for Goodman model GUN040-2 — 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 GUN040-2 — 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 Pressure Switch NO for GUN040-2 — B1370107

Name: OEM Goodman -1.4" WC Pressure Switch NO for GUN040-2 — B1370107
Brand: Goodman
SKU: GOODMAN-13108
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-13108 Brand: Goodman

$24.95 $32.95

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The genuine Goodman B1370107 Pressure Switch is a normally-open draft-proving control for the GUN040-2 furnace. It monitors the inducer's vacuum and closes at a -1.4 in. water column setpoint, confirming proper venting before the control board permits ignition — a required safety interlock against flue blockage and backdrafting.

Specifications

Setpoint: -1.4 in. water column (WC)
Configuration: Normally open (NO), closes on negative pressure
Function: Inducer draft-proving safety switch
Fits Goodman GUN040-2 furnace
OEM part number: B1370107

OEM vs. Generic

The OEM Goodman switch is calibrated to the precise -1.4" WC trip point required by the furnace's control sequence. Our generic equivalent matches the setpoint and hose-port fitting for reliable, budget-friendly replacement.

Install Difficulty

Easy (2/5). Two spade terminals and one silicone hose connection. Ensure the pressure port faces down to shed condensate. If a new switch won't close, inspect the vent, hose, and inducer before replacing again.

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 Pressure Sw...

$24.95

Frequently Asked Questions

Does this Pressure Switch fit my Goodman GUN040-2 — B1370107?

Yes. This is the factory-specified OEM pressure switch for the Goodman GUN040-2 — 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 GUN040-2 — 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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