OEM Carrier Hot Surface Igniter LH33ZG001 for Model PG9MAB048080ACSA

This OEM hot surface igniter (part number LH33ZG001) is the factory-specified replacement for the Carrier PG9MAB048080ACSA gas furnace. The hot surface igniter is a critical component in the ignition sequence — it heats to over 1,800°F within seconds to reliably light the burner assembly each heating cycle. When the igniter fails, the furnace control board will attempt ignition, detect no flame, and enter a safety lockout — leaving you with no heat. Common symptoms include the furnace starting its cycle, the inducer running, but the burners never lighting, followed by a fault code indicating ignition failure.

• Specs: Silicon nitride hot surface igniter | OEM part number LH33ZG001 | 120V input | Factory-matched geometry and lead length for direct drop-in fit
• OEM vs Generic: This OEM igniter meets Carrier's exact resistance, mass, and thermal cycling specifications. Generic igniters frequently use lower-grade silicon carbide elements that are more brittle, crack under thermal stress sooner, and can misfire in cold-start conditions — leading to repeat service calls.
• Install Difficulty: 2/5 — Turn off gas and power at the disconnect before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Handle the igniter element only by its mounting bracket — never touch the ceramic tip with bare hands, as skin oils cause premature failure. Plug in the wiring harness connector last.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed and tested for the Carrier PG9MAB048080ACSA 80% AFUE gas furnace (4-ton, 80,000 BTU). Always verify your existing igniter's part number on the component label or your furnace's wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork, no returns.