ICP Pressure Switch Tubing for WPG4244040RKA1 — OEM | Ships Today

Overview

This genuine OEM ICP pressure switch tubing (part number 1178417) is the flexible signal line that connects the draft-proving pressure switch to the inducer assembly on your WPG4244040RKA1 packaged unit. The tube carries the negative-pressure signal the switch needs to confirm the inducer is pulling combustion gases before the control board allows ignition. When this tubing cracks, hardens, kinks, or fills with condensate, the switch can no longer sense draft accurately — so the furnace either refuses to light or short-cycles on a false open-switch fault, even when the inducer is running fine.

Specifications

Compatibility

A direct OEM replacement for the ICP, Tempstar, Heil and Comfortmaker WPG4244040RKA1 packaged unit. Confirm the routing and length against your existing tube before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the burner/control service panel.
3. Document — Photograph the tube routing and both port connections before removing.
4. Remove — Pull the old tube off the pressure-switch port and the inducer/collector port; discard if cracked or clogged.
5. Install — Push the new tube fully onto both ports, matching the original routing and avoiding kinks or low traps that hold condensate.
6. Test — Restore power and confirm the furnace proves draft and ignites on a normal call for heat.

Signs You Need a Replacement

• Furnace locks out with a pressure-switch fault while the inducer runs
• Short-cycling or repeated ignition retries
• Visible cracks, brittleness, or condensate trapped in the tube
• Tube has slipped off or split at a port connection

Shipping & Returns

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