What are the specs for this Pressure Switch?

The correct replacement for ICP model WPG4604115LKA1 — OEM Sensing Line | 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 WPG4604115LKA1 — OEM Sensing Line | Ships Today.

ICP

ICP Pressure Switch Tubing for WPG4604115LKA1 — OEM Sensing Line | Ships Today

Name: ICP Pressure Switch Tubing for WPG4604115LKA1 — OEM Sensing Line | Ships Today
Brand: ICP
SKU: WPG4604115LKA1
Price: 35.04 USD
Availability: InStock

SKU: WPG4604115LKA1 Brand: ICP

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Overview

This OEM pressure switch tubing (part number 1178417) is the factory sensing line that connects the pressure switch to the inducer/collector box on the ICP / Tempstar / Heil WPG4604115LKA1 packaged unit. The tube transmits the small negative pressure created by the induced-draft blower to the diaphragm of the pressure switch, proving safe venting before the control board allows ignition. Over time these lines crack, harden, kink, or fill with condensate, which sends a false reading to the switch. The result is a furnace that won't light, locks out on a pressure-switch fault, or short-cycles on the heat call. Replacing the original tubing with the correct OEM line restores accurate pressure proving and reliable startup.

Specifications

Spec	Value
Part Number	1178417
Type	Pressure Switch Sensing Tubing
Brand	ICP (Tempstar / Heil)
Function	Connects pressure switch to inducer/collector box
Application	Draft proving / ignition safety

Compatibility

Direct OEM replacement for the ICP / Tempstar / Heil WPG4604115LKA1 packaged unit and other ICP-family models that use the same pressure switch tubing routing. Confirm the tube length and fitting size against your existing line before installing.

Installation Guide

Safety First — Disconnect power and shut off the gas supply, then verify zero voltage with a multimeter.
Access — Remove the burner/control service panel to reach the pressure switch and inducer.
Document — Photograph the existing tube routing and both connection ports before removal.
Remove — Gently pull the old tubing from the pressure switch port and the inducer/collector box fitting.
Install — Push the new OEM tube fully onto both ports, matching the original routing with no kinks or low spots that trap condensate.
Test — Restore gas and power, start a heat call, and confirm the inducer proves and the burners light without lockout.

Signs You Need a Replacement

Furnace locks out on a pressure-switch fault code
Inducer runs but burners never ignite
Cracked, brittle, kinked, or condensate-filled sensing line
Intermittent heat that improves after blowing out the tube

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 Pressure Switch Tubing for W...

$35.04

Frequently Asked Questions

Does this Pressure Switch fit my ICP WPG4604115LKA1 — OEM Sensing Line | Ships Today?

Yes. This is the factory-specified OEM pressure switch for the ICP WPG4604115LKA1 — OEM Sensing Line | 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 WPG4604115LKA1 — OEM Sensing Line | 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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