OEM Carrier Hot Surface Igniter (LH33ZS004) for Model PG9MAA048060ADKA

This is the genuine OEM Carrier hot surface igniter, part number LH33ZS004, factory-specified for the Carrier PG9MAA048060ADKA gas furnace. The hot surface igniter is a resistive heating element that glows to ignition temperature (typically 1,800°F+) within seconds of a call for heat, igniting the gas burner. When it fails, the furnace control board will attempt ignition, detect no flame, and enter a safety lockout — leaving you with no heat. Common symptoms include a furnace that attempts to start but shuts down after 30–90 seconds, a blinking fault code for ignition failure, or a visibly cracked or broken igniter element.

• Specs: 120V AC | 5 Amp | Silicon Carbide element | OEM factory-matched geometry and harness connector for drop-in fit
• OEM vs Generic: This is a genuine Carrier OEM igniter — not an aftermarket substitute. Generic igniters frequently vary in element resistance, geometry, and mounting bracket dimensions, leading to premature failure or misfire. OEM ensures the correct cold/hot resistance profile matched to your control board's timing sequence.
• Install Difficulty: 2/5 — Power off and allow the furnace to cool fully before servicing. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers. Never touch the ceramic element with bare hands — skin oils cause thermal stress cracking. Disconnect the wiring harness, remove the single mounting screw, swap the igniter, and reconnect. Verify ignition sequence on first test cycle.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for the Carrier PG9MAA048060ADKA packaged gas furnace. Also cross-references to earlier Carrier igniter part numbers LH33ZS003, LH33ZS002, and LH33ZS001, making it the current superseding part for this entire series. Verify your existing igniter's mounting configuration and connector before ordering. Our team is available to confirm fitment — order with confidence and get back to heat fast.