OEM Carrier Hot Surface Igniter LH33WZ010 for Model LC3:50LC400674

This is the factory-specified OEM hot surface igniter (part number LH33WZ010) for the Carrier LC3:50LC400674 gas furnace. The igniter is a critical component in the heating sequence — upon a call for heat, the control board energizes the igniter, which heats to over 1,800°F to ignite the gas burners. When the igniter fails or cracks, the furnace will attempt to light, fail to establish flame, and enter a safety lockout — leaving you with no heat. Common symptoms include repeated ignition attempts with no flame, error codes indicating ignition failure, or a visibly cracked or broken igniter element.

• Specs: OEM Part Number LH33WZ010 | Silicon carbide spark electrode igniter | Factory-matched voltage and wattage | Direct OEM replacement — no modifications required
• OEM vs Generic: This OEM igniter is manufactured to Carrier's exact electrical and thermal specifications. Generic igniters frequently vary in wattage and element geometry, causing unreliable ignition, premature cracking, or incompatibility with the control board's timing sequence — shortening furnace life and voiding remaining warranties.
• Install Difficulty: 3/5 — Turn off gas supply and 120V power before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Do NOT touch the igniter element with bare hands — skin oils cause hot spots and premature failure. Wear nitrile gloves during installation.
• Warranty: 1-year OEM factory warranty. Stocked in our warehouse and ships same business day when ordered before 3PM local time.

Compatibility: Designed specifically for the Carrier LC3:50LC400674 packaged gas unit. Always verify your OEM part number on the furnace's data label or existing component before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility before you purchase — don't guess on a critical ignition component.