OEM Carrier Hot Surface Igniter LH33ZG001 for Model PG9MAB036040AASA

This is the factory OEM hot surface igniter (HSI) for the Carrier PG9MAB036040AASA gas furnace. The igniter is a critical component in the furnace ignition sequence — it heats to over 2,000°F to ignite the gas flowing from the burner assembly. When it fails, the control board will attempt ignition, detect no flame via the flame sensor, and lock the furnace out — leaving you with no heat. A cracked, broken, or open-circuit igniter is one of the most common causes of furnace no-heat service calls.

• Specs: OEM Part Number LH33ZG001 | Silicon nitride element | Factory-rated voltage and wattage | Exact OEM geometry for drop-in fit on PG9MAB036040AASA
• OEM vs Generic: This is the genuine Carrier OEM igniter — factory-matched element material, bracket dimensions, and lead-wire length. Generic igniters often use silicon carbide, which is more brittle and prone to premature cracking from vibration and thermal cycling.
• Install Difficulty: 2/5 — Never touch the igniter element with bare hands; skin oils cause hot spots that crack the element. Tools needed: 1/4" nut driver, needle-nose pliers. Always disconnect power at the breaker before starting. Igniter mounts with a single screw to the burner bracket — photograph wiring harness orientation before unplugging.
• Warranty: 1-year OEM factory warranty. Verified fitment, in-stock, and ships the same business day from our warehouse.

Compatibility: Engineered and specified for the Carrier PG9MAB036040AASA gas furnace. Verify your existing igniter part number on the unit's data label or control board wiring diagram before ordering. Our team is available to confirm fitment — order with confidence from NationalHVACParts.com and get same-day shipping on in-stock OEM parts.