OEM Carrier Hot Surface Igniter 120V 5A for Model PG9MAA048100AEKA (LH33ZS004)

This is the genuine OEM hot surface igniter for the Carrier PG9MAA048100AEKA gas furnace — factory part number LH33ZS004. The hot surface igniter is the first component activated on every call for heat: the control board energizes the igniter, it glows to approximately 2,500°F, and that heat source opens the gas valve and lights the burners. When the igniter fails or develops a hairline crack, the furnace will attempt ignition, fail to establish flame, and lock out — leaving you with no heat and a fault code on the control board. Replacing the igniter is one of the most common and cost-effective furnace repairs available.

• Specs: 120V AC | 5 Amp draw | Silicon carbide element | Factory OEM part number LH33ZS004 | Exact fit for Carrier PG9MAA048100AEKA
• OEM vs Generic: OEM silicon carbide igniters are manufactured to precise resistance tolerances. Aftermarket units often fall outside the acceptable resistance window, causing nuisance lockouts or premature failure within one heating season.
• Install Difficulty: 2/5 — Turn off power and gas before starting. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers. Do not touch the igniter element with bare hands — skin oils cause hot spots and premature cracking. Handle only by the mounting bracket or ceramic base. Verify ignition sequence via the control board after installation.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered as the direct OEM replacement for Carrier model PG9MAA048100AEKA. Cross-references include LH33ZS003, LH33ZS002, and LH33ZS001 in applicable models — always verify your unit's data plate and service literature before ordering. Not sure if this is the right part? Our HVAC parts specialists confirm fitment before you buy — contact us before ordering.