ICP Pressure Switch for WPG4304060RKA1 — w/ Tubing | Ships Today
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Overview
This genuine OEM pressure switch with tubing (part number 1178417) is the direct replacement for the ICP / Tempstar / Heil WPG4304060RKA1. A furnace pressure switch is a safety device that confirms the induced-draft (inducer) motor is moving combustion gases properly before the control board allows the gas valve to open and the igniter to fire. It senses the negative pressure created by the inducer through its connected tubing; if adequate draft isn't present — because of a failed inducer, a blocked flue or condensate drain, or a cracked hose — the switch stays open and locks out ignition to prevent unsafe operation. Over time the switch contacts wear or stick, and the tubing cracks or clogs, causing nuisance lockouts even when draft is fine. This assembly includes the tubing for a complete, reliable repair.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1178417 |
| Type | Furnace Pressure Switch |
| Includes | Pressure Switch Tubing |
| Function | Combustion Draft Safety Proving |
| Brand | ICP / Tempstar / Heil |
Compatibility
Direct-fit for the ICP WPG4304060RKA1 and the Tempstar, Heil, and Comfortmaker furnaces built on the same platform. Confirm the pressure switch rating (in. w.c.) and port configuration against your existing switch 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 and inducer.
- Document — Photograph the wiring and tubing routing before disconnecting.
- Remove — Pull the electrical leads, detach the hose, and unscrew the old switch from its bracket.
- Install — Mount the new switch, attach the new tubing securely with no kinks, and reconnect the leads per your photo.
- Test — Restore gas and power and run a full heat cycle to confirm the switch closes and ignition proceeds.
Signs You Need a Replacement
- Furnace inducer runs but burners never light.
- Repeated pressure-switch lockout fault codes.
- Cracked, brittle, or clogged sensing tubing.
- Switch fails a continuity test when draft is confirmed present.
Shipping & Returns
Ships same day on orders placed 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