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Goodman

OEM Goodman -.30/-.75 in WC Combination Pressure Switch for WGFM295045V3BAB — 11177113

SKU: GOODMAN-14505 Brand: Goodman
$79.95 $104.95

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Texas CMBL #19328542014
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The Goodman 11177113 Combination Pressure Switch is a genuine OEM safety control engineered for the WGFM295045V3BAB gas furnace and compatible Goodman/Amana models. This dual-stage gray switch monitors both low- and high-fire draft, verifying proper venting and inducer airflow before the control board permits ignition. If a blocked vent, cracked hose, or failing inducer drops pressure below the setpoint, the switch opens and locks out the burners — protecting your home from unsafe combustion.

  • Setpoints: -0.30 in. WC and -0.75 in. WC (two-stage)
  • Function: Combination / dual pressure switch, negative pressure sensing
  • Color: Gray
  • Type: Normally open, closes on pressure
  • Fit: WGFM295045V3BAB two-stage 96% AFUE furnace

OEM vs. Generic: Our OEM Goodman 11177113 carries the exact factory-calibrated setpoints and hose port geometry your furnace was designed around. Universal-style switches often miss the precise -0.30"/-0.75" dual-stage calibration, causing nuisance lockouts or unsafe operation. For a combustion safety component, OEM is the right call.

Install difficulty: Moderate (2/5). A DIY-capable homeowner can swap this in roughly 20–30 minutes with a nut driver — disconnect power and gas, note the hose routing, transfer the two spade wires and tubing, and mount the replacement. If you are unsure about draft testing, have a licensed HVAC technician verify operation with a manometer. Always cut power at the breaker before servicing.

Backed by genuine Goodman quality and shipped from National HVAC Parts.

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

Frequently Asked Questions

Does this Pressure Switch fit my Goodman WGFM295045V3BAB — 11177113?
Yes. This is the factory-specified OEM pressure switch for the Goodman WGFM295045V3BAB — 11177113. 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 WGFM295045V3BAB — 11177113?
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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Mike Rivera
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