What are the specs for this Pressure Switch?

The correct replacement for ICP model WPG3484115RKC1 — OEM 1178417 | Ships Today 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 ICP equipment which lists the model number WPG3484115RKC1 — OEM 1178417 | Ships Today.

ICP

ICP Tubing Pressure Switch for WPG3484115RKC1 — OEM 1178417 | Ships Today

Name: ICP Tubing Pressure Switch for WPG3484115RKC1 — OEM 1178417 | Ships Today
Brand: ICP
SKU: 1178417
Price: 49.40 USD
Availability: InStock

SKU: 1178417 Brand: ICP

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Overview

This OEM tubing pressure switch (part number 1178417) is the combustion safety component on the ICP/Tempstar/Heil WPG3484115RKC1 packaged gas unit. It senses the negative pressure created by the draft inducer through its sensing tube and proves that proper venting/airflow exists before allowing the gas valve and igniter to energize. A failed switch, a blocked vent, or a cracked hose will keep the switch from closing, preventing ignition. Symptoms include the inducer running continuously with no ignition, or the furnace short-cycling on a pressure-switch lockout fault.

Specifications

Spec	Value
Part Number	1178417
Type	Tubing Pressure Switch
Brand	ICP / Tempstar / Heil
Fit	OEM
Application	Furnace / Packaged Gas Unit

Compatibility

Direct-fit replacement for the ICP/Tempstar/Heil/Comfortmaker WPG3484115RKC1 packaged gas furnace and related WPG-series units calling for OEM pressure switch 1178417.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter.
Access — Remove the control/burner compartment service panel.
Document — Photograph the switch wiring and the sensing tube routing before disconnecting.
Remove — Pull the spade terminals, slide off the sensing hose, and remove the mounting screws.
Install — Mount the new switch, reconnect the wires and hose exactly per your photo, ensuring the tube is kink-free.
Test — Restore power, call for heat, and confirm the inducer starts and the switch closes to allow ignition.

Signs You Need a Replacement

Inducer runs but the furnace never ignites
Repeated pressure-switch lockout error codes
Switch fails to close with a known-good draft
Stuck-closed contacts that allow ignition with no inducer airflow

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.

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

ICP Tubing Pressure Switch for W...

$49.40

Frequently Asked Questions

Does this Pressure Switch fit my ICP WPG3484115RKC1 — OEM 1178417 | Ships Today?

Yes. This is the factory-specified OEM pressure switch for the ICP WPG3484115RKC1 — OEM 1178417 | Ships Today. 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 ICP WPG3484115RKC1 — OEM 1178417 | Ships Today?

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 ICP 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 ICP 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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