What are the specs for this Pressure Switch?

The correct replacement for Goodman model GMPH075-4 — 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 GMPH075-4 — 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 -0.35" WC Pressure Switch for GMPH075-4 — B1370133

Name: OEM Goodman -0.35" WC Pressure Switch for GMPH075-4 — B1370133
Brand: Goodman
SKU: GOODMAN-12030
Price: 25.95 USD
Availability: InStock

SKU: GOODMAN-12030 Brand: Goodman

$25.95 $33.95

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Goodman B1370133 Furnace Pressure Switch

The Goodman B1370133 is a genuine OEM draft/air-proving pressure switch engineered for the GMPH075-4 gas furnace and compatible Goodman/Amana platforms. It monitors induced-draft airflow and confirms the venting system is clear before allowing the ignition sequence to proceed, protecting your equipment and household from unsafe combustion conditions. This switch trips at a factory-set -0.35" water column and uses a normally open (NO) contact configuration.

Specifications

Set point: -0.35" WC (negative pressure)
Contact type: Normally Open (NO)
Function: Draft / air-proving safety switch
Equipment: Gas furnace
Fits: Goodman GMPH075-4 and select GMP/GMPH series
OEM Part Number: B1370133

OEM vs. Generic

The OEM Goodman switch is calibrated and tested to the exact -0.35" WC set point specified by the manufacturer, guaranteeing correct trip behavior and a bolt-in fit. Our Generic equivalent meets the same electrical and pressure spec at a lower price point and is ideal for out-of-warranty repairs where budget matters. Both restore full safety-circuit function.

Installation Difficulty

Easy (2/5). Replacement typically takes 15–20 minutes with basic hand tools. Disconnect power, note the tubing and wire routing, transfer the pressure hose and spade terminals, and mount the new switch. Always verify correct operation and check for negative pressure at the port after install. 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 -0.35" WC Pressure S...

$25.95

Frequently Asked Questions

Does this Pressure Switch fit my Goodman GMPH075-4 — B1370133?

Yes. This is the factory-specified OEM pressure switch for the Goodman GMPH075-4 — 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 GMPH075-4 — 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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