What are the specs for this Pressure Switch?

The correct replacement for ICP model WPG4604090RKA1 — OEM with Tubing | 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 WPG4604090RKA1 — OEM with Tubing | Ships Today.

ICP

ICP Pressure Switch for WPG4604090RKA1 — OEM with Tubing | Ships Today

Name: ICP Pressure Switch for WPG4604090RKA1 — OEM with Tubing | Ships Today
Brand: ICP
SKU: WPG4604090RKA1
Price: 42.84 USD
Availability: InStock

SKU: WPG4604090RKA1 Brand: ICP

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Overview

This OEM pressure switch assembly with tubing (part number 1178417) is a critical safety control in the gas heating section of your ICP WPG4604090RKA1 package unit. It senses the negative pressure created by the inducer (draft) motor and confirms that the venting path is clear before the control allows the igniter and gas valve to fire. If the switch does not close, the furnace will not begin its heating sequence — a deliberate safety lockout that prevents firing without proper combustion airflow. A failed switch, a cracked or blocked tube, or condensate buildup can cause nuisance no-heat faults. Replacing the switch and tubing restores safe, reliable ignition.

Specifications

Spec	Value
OEM Part Number	1178417
Type	Air Pressure Switch with Tubing
Brand	ICP
Application	Furnace Draft / Combustion Safety

Compatibility

Direct OEM replacement for the draft pressure switch on the ICP / Tempstar / Heil WPG4604090RKA1 package unit, and fits related ICP-family furnaces and package units using this switch. Confirm the trip-pressure rating and port configuration match your original part before installing.

Installation Guide

Safety First — Shut off gas and disconnect power, then verify zero voltage with a multimeter.
Access — Remove the service panel to reach the pressure switch near the inducer assembly.
Document — Photograph the tubing routing and wire connections before disconnecting.
Remove — Pull the tubing off the port, disconnect the switch wires, and unscrew the old switch from its bracket.
Install — Mount the new switch, reconnect the wires, and route the tubing without kinks or low spots that trap condensate.
Test — Restore gas and power and confirm the inducer starts, the switch closes, and the burners ignite.

Signs You Need a Replacement

Furnace inducer runs but the burners never light.
Control board flashes a pressure switch fault code.
Cracked, brittle, or blocked sensing tubing.
Intermittent no-heat lockouts, especially in cold or damp conditions.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 WPG46040...

$42.84

Frequently Asked Questions

Does this Pressure Switch fit my ICP WPG4604090RKA1 — OEM with Tubing | Ships Today?

Yes. This is the factory-specified OEM pressure switch for the ICP WPG4604090RKA1 — OEM with Tubing | 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 WPG4604090RKA1 — OEM with Tubing | 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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