OEM Carrier Hot Surface Igniter LH33ZS004 for Model PG9MAA060120ADKA

This OEM hot surface igniter (part number LH33ZS004) is the factory-specified replacement for the Carrier PG9MAA060120ADKA gas furnace. The igniter is a critical component in the ignition sequence — it heats to over 2,000°F to light the burner assembly each heating cycle. When it fails, the control board will attempt ignition, detect no flame, and lock out the furnace, leaving you with a blinking fault code and no heat. Common symptoms include the furnace cycling on, attempting to light, then shutting down completely after 3 attempts with a lockout code.

• Specs: OEM Part Number LH33ZS004 | Silicon nitride hot surface igniter | Factory-matched resistance and geometry for Carrier PG9MAA060120ADKA | 120V operation
• OEM vs Generic: This is the exact factory-grade igniter matched to Carrier's tolerance specifications. Generic igniters often vary in resistance rating and element geometry, leading to unreliable lighting, premature cracking, and shortened service life in extreme heat cycling environments.
• Install Difficulty: 2/5 — Turn off power and gas supply before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, work gloves. Never touch the igniter element with bare hands — skin oils cause hot spots and premature failure. Photograph wiring and mounting orientation before removal.
• Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed and factory-matched for the Carrier PG9MAA060120ADKA gas furnace. Verify your existing igniter part number on the component label or your unit's data plate before ordering. If you need fitment assistance, our HVAC parts specialists are available to confirm compatibility before you buy — same-day shipping on all in-stock orders.