ICP Hot Surface Igniter for WPG4484090RKB1 — Furnace Ignition | Ships Today
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Overview
This genuine OEM hot surface igniter (parts #1186861 and #1177663) is the ignition source for the heating section of the ICP/Tempstar/Heil WPG4484090RKB1 packaged gas/electric unit. On a call for heat, the control board sends 120V to the igniter element, which glows to roughly 2,000°F and lights the burner gas. Hot surface igniters are brittle silicon-carbide or silicon-nitride elements that degrade with every cycle and eventually crack, develop hairline fractures, or fail to reach ignition temperature. The result is no heat, repeated ignition lockouts, or a furnace that tries several times before locking out. Replacing the igniter at the first sign of weak or delayed ignition prevents nuisance no-heat calls and protects the heat exchanger from delayed-ignition flame rollout.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1186861, 1177663 |
| Type | Hot Surface Igniter |
| Brand | ICP / Tempstar / Heil |
| Operating Voltage | 120 VAC |
| Application | Furnace / Gas Heat Section |
| Fits Model | WPG4484090RKB1 |
Compatibility
Direct factory replacement for the ICP, Tempstar, Heil, and Comfortmaker WPG4484090RKB1 packaged unit. Match the mounting bracket and connector orientation to your existing igniter before installing — the element is fragile and should only be handled by the ceramic base.
Installation Guide
- Safety First — Disconnect power and shut off the gas, then verify zero voltage with a multimeter.
- Access — Remove the burner-compartment service panel.
- Document — Photograph the igniter position, bracket, and wire routing before disconnecting.
- Remove — Unplug the igniter connector and remove the mounting screw; handle only by the ceramic base, never the element.
- Install — Mount the new igniter at the same depth and angle, then reconnect the plug per your photo.
- Test — Restore power and gas, run a heat cycle, and confirm the element glows and lights the burners promptly.
Signs You Need a Replacement
- No heat — burners never light on a call for heat
- Furnace locks out after several failed ignition attempts
- Igniter glows weakly, unevenly, or not at all
- Visible crack or hairline fracture in the element
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