ICP Hot Surface Igniter for WFMR070A036B1 — HSI Kit with Bracket | Ships Today

Overview

This OEM hot surface igniter kit (HSI) is the factory ignition assembly for the ICP / Tempstar / Heil WFMR070A036B1 gas furnace. The kit covers the complete ignition group: igniter element (OEM 1176919), the igniter mounting bracket (OEM 1183455), and the N HSI snap valve assembly (OEM 1176929, ref 36J24618). The hot surface igniter is a silicon-carbide or silicon-nitride element that glows red-hot when energized to directly light the gas at the burner. It is the single most common cause of a no-heat call: the brittle element cracks from thermal cycling, age, or being touched during service. When the igniter fails the furnace will run its inducer and call for heat but never light, often locking out after 3–5 retry attempts.

Specifications

Compatibility

Engineered as a direct OEM fit for the ICP family WFMR070A036B1 furnace and its sister models sold under the Tempstar, Heil, Comfortmaker, and Arcoaire badges. Always confirm your OEM part number against the furnace rating plate before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter and shut the gas valve.
2. Access — Remove the furnace blower-compartment and burner-access panels.
3. Document — Photograph the igniter leads and bracket orientation before disconnecting.
4. Remove — Unplug the igniter connector, remove the bracket screw, and withdraw the old igniter. Handle the new element by the ceramic base only — never touch the silicon element with bare fingers.
5. Install — Mount the new igniter and bracket in the original position, ensuring proper spacing over the burner, and reconnect the plug per your photo.
6. Test — Restore gas and power, start a heat cycle, and confirm the igniter glows and the burners light within the normal trial-for-ignition window.

Signs You Need a Replacement

• Furnace inducer runs but burners never ignite (no heat).
• Igniter shows visible cracks, hot spots, or no longer glows.
• Control board flashes an ignition-failure or lockout fault code.
• System short-cycles and locks out after several failed light attempts.

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free returns. Backed by the National HVAC Parts fitment guarantee.