ICP Pressure Switch for WPG4244060RKA1 — Furnace Air Proving Switch | Ships Today

Overview

This OEM pressure switch with tubing (OEM part number 1178417) is the combustion air-proving safety on the ICP / Tempstar / Heil WPG4244060RKA1 packaged gas unit. Before the control board allows ignition, the inducer motor must pull enough draft to close this switch — proving the venting is clear and combustion airflow is adequate. If the switch fails to close, the furnace will not light; if it fails to open, the board flags an unsafe condition. The included tubing connects the switch to the inducer pressure tap. A bad switch, a cracked hose, or a blocked vent will all halt ignition.

Specifications

Compatibility

Direct OEM fit for the ICP WPG4244060RKA1 packaged gas/electric unit and shared-platform Tempstar, Heil, and Comfortmaker WPG-series models using pressure switch 1178417. Confirm the switch's set point ("WC) matches your old part before installing.

Installation Guide

1. Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter.
2. Access — Remove the control/burner access panel.
3. Document — Photograph the switch wiring and the tubing routing to the inducer tap.
4. Remove — Pull the spade terminals, disconnect the hose, and unscrew the old switch from its bracket.
5. Install — Mount the new switch, attach the tubing securely (no kinks), and reconnect the wires per your photo.
6. Test — Restore power, start a heat call, and confirm the inducer proves draft and the burners light normally.

Signs You Need a Replacement

• Inducer runs continuously but burners never ignite.
• Furnace short-cycles or locks out on a pressure-switch fault code.
• Cracked, brittle, or disconnected pressure tubing.
• Switch contacts stuck open or stuck closed when tested with a meter.

Shipping & Returns

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