What are the specs for this Pressure Switch?

The correct replacement for Goodman model GSM080-4 — B1370133 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 GSM080-4 — B1370133.

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 -.35 in. WC Pressure Switch for GSM080-4 — B1370133

Name: OEM Goodman -.35 in. WC Pressure Switch for GSM080-4 — B1370133
Brand: Goodman
SKU: GOODMAN-12934
Price: 25.95 USD
Availability: InStock

SKU: GOODMAN-12934 Brand: Goodman

$25.95 $34.95

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Goodman B1370133 Pressure Switch (-.35 in. WC, NO)

The Goodman B1370133 pressure switch is a factory-original combustion-air safety control for GSM080-4 gas furnaces. This normally-open switch senses draft from the induced-draft blower and closes at approximately -0.35 in. WC, proving venting before the board allows ignition. A failed switch is a leading cause of no-heat lockouts — the furnace tries to start, the switch never proves, and the sequence faults out. Replacing it with the exact OEM setpoint restores safe, reliable ignition.

Specifications

Part Number: B1370133
Trip Point: -0.35 in. WC
Configuration: Normally Open (NO)
Compatible Model: Goodman GSM080-4
Equipment Type: Gas Furnace
Function: Combustion-air / draft proving

OEM vs. Generic

This genuine OEM Goodman switch is calibrated to the exact -0.35 in. WC setpoint the control board expects. A generic switch with the wrong setpoint may cause nuisance lockouts or, worse, mask a real venting problem. Matching the OEM part keeps the safety circuit working as designed.

Installation Difficulty

Easy — a two-wire, one-hose swap that typically takes 10–15 minutes. Disconnect power, note the hose routing, and transfer the tubing to the new switch. A quick, DIY-friendly repair for most homeowners.

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 -.35 in. WC Pressure...

$25.95

Frequently Asked Questions

Does this Pressure Switch fit my Goodman GSM080-4 — B1370133?

Yes. This is the factory-specified OEM pressure switch for the Goodman GSM080-4 — B1370133. 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 GSM080-4 — B1370133?

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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