What are the specs for this Pressure Switch?

The correct replacement for ICP model WPG3604090RKC1 — Tubing Included | 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 WPG3604090RKC1 — Tubing Included | Ships Today.

ICP

ICP Pressure Switch for WPG3604090RKC1 — Tubing Included | Ships Today

Name: ICP Pressure Switch for WPG3604090RKC1 — Tubing Included | Ships Today
Brand: ICP
SKU: 1178417
Price: 44.20 USD
Availability: InStock

SKU: 1178417 Brand: ICP

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Overview

This genuine OEM pressure switch assembly with tubing (part #1178417) for the ICP WPG3604090RKC1 is the safety device that confirms proper venting before the furnace ignites. The draft inducer creates a vacuum that the switch senses through its connected tubing; only when adequate negative pressure is verified does the switch close and allow ignition to proceed. This prevents the furnace from firing when the flue is blocked or the inducer has failed, protecting against dangerous flue-gas spillage.

Specifications

Spec	Value
OEM Part Number	1178417
Type	Pressure Switch with Tubing
Brand	ICP
Function	Vent/draft safety proving switch
Fitment	OEM direct replacement

Compatibility

Direct OEM replacement for the ICP / Tempstar / Heil WPG3604090RKC1 packaged gas unit. Verify the pressure setpoint stamped on the switch body and the tubing port configuration match your original.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
Access — Remove the service panel to reach the inducer and switch.
Document — Photograph the wiring and tubing routing before disconnecting.
Remove — Pull the spade terminals, detach the tubing, and unscrew the old switch from its bracket.
Install — Mount the new switch, reconnect the tubing fully seated, and reattach the wires per your photo.
Test — Restore power, call for heat, and confirm the switch closes and the furnace sequences normally.

Signs You Need a Replacement

Furnace inducer runs but ignition never starts
Control board flashes a pressure-switch fault code
Cracked, kinked, or disconnected sensing tubing
Switch fails to close even with a clear vent and working inducer

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 for WPG36040...

$44.20

Frequently Asked Questions

Does this Pressure Switch fit my ICP WPG3604090RKC1 — Tubing Included | Ships Today?

Yes. This is the factory-specified OEM pressure switch for the ICP WPG3604090RKC1 — Tubing Included | 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 WPG3604090RKC1 — Tubing Included | 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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