OEM Carrier Hot Surface Igniter LH33ZS004 for Model PG9MAA036040ABKA

This is the factory OEM hot surface igniter (part number LH33ZS004) for the Carrier PG9MAA036040ABKA gas furnace. The hot surface igniter is the critical first step in every heating cycle — the control board energizes it to reach ignition temperature, which then lights the gas burner. When the igniter fails, the furnace will attempt to light, fail to establish a flame, and lock out after 2–3 ignition trials. Common symptoms include a no-heat call, error codes for ignition failure, or a furnace that runs the inducer but never fires the burner.

• Specs: 120V AC | 5 Amp | Silicon carbide element | Factory-matched geometry and connector for direct plug-in replacement on Carrier PG9MAA036040ABKA
• OEM vs Generic: This is a genuine Carrier OEM igniter — engineered to the exact resistance tolerance and element thickness specified for this furnace. Generic igniters often run hotter or cooler than spec, leading to premature cracking or failed ignition attempts within the first heating season.
• Install Difficulty: 2/5 — Turn off gas and power at the disconnect before starting. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers. Handle the element only by its mounting bracket — skin oils accelerate silicon carbide degradation. Typical replacement time: 15–20 minutes.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our warehouse in original Carrier packaging.

Compatibility: Direct OEM replacement for Carrier model PG9MAA036040ABKA gas furnace. Also cross-references with LH33ZS001, LH33ZS002, and LH33ZS003 superseded part numbers. Always verify your unit's data plate and existing igniter specs before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.