OEM Carrier Hot Surface Igniter LH33WZ010 for Model LC350HE400812

This OEM hot surface igniter (part number LH33WZ010) is the factory-specified spark electrode ignitor for the Carrier LC350HE400812 furnace. The igniter is responsible for generating the heat or spark needed to light the burner assembly during each heating cycle. When it fails, the control board will attempt ignition, find no flame, and trigger a lockout fault — leaving you with a furnace that starts the sequence but never produces heat. Common symptoms include repeated ignition attempts followed by a blinking fault code, or a furnace that runs the inducer but never fires the burners.

• Specs: OEM Part Number LH33WZ010 | Spark electrode ignitor type | Factory-matched geometry and mounting configuration | Rated for Carrier LC350HE400812 furnace platform
• OEM vs Generic: This is a genuine OEM Carrier igniter built to exact factory specifications. Generic igniters often differ in element composition, tip geometry, or lead length — leading to inconsistent spark gap, premature cracking, or misalignment with the burner port. OEM ensures first-cycle reliability and longevity.
• Install Difficulty: 3/5 — Always shut off gas supply and 120V power before servicing. Allow the igniter to cool completely before handling — oils from bare hands can cause cracking at high temperatures. Tools needed: 1/4" nut driver, flat-head screwdriver, needle-nose pliers. Do not touch the ceramic element.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed specifically for the Carrier LC350HE400812 furnace. Verify your OEM part number (LH33WZ010) against your unit's data plate or existing igniter before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before your order ships — same-day on all in-stock parts.