OEM Carrier Hot Surface Igniter (LH33ZS004) for Model PG9MAA060140AAKA

This is the factory OEM hot surface igniter for the Carrier PG9MAA060140AAKA gas furnace, sold under OEM part number LH33ZS004, with the optional bracket and gasket assembly available under companion part 323901-701. The igniter is the first critical component in the ignition sequence — at every call for heat, the control board energizes the igniter to approximately 1800°F, glowing it to ignition temperature before the gas valve opens. When this part fails, the furnace will attempt ignition, fail to light, and enter a hard lockout — leaving you with no heat. Common failure symptoms include a red flashing fault code on the control board, the burners never lighting despite the inducer running, or the igniter visibly cracked or broken.

• Specs: 120V AC input | 5 Amp draw | Silicon carbide element | Factory-matched lead wire length and connector | OEM Part No. LH33ZS004 | Companion bracket/gasket: 323901-701
• OEM vs Generic: OEM Carrier igniters are manufactured to exact resistance and thermal-shock tolerances for the PG9MAA furnace series. Aftermarket silicon carbide igniters frequently run outside spec resistance values, causing nuisance lockouts or premature cracking within one heating season.
• Install Difficulty: 2/5 — Turn off gas and 120V power before beginning. Tools needed: 1/4" nut driver, flat-head screwdriver, needle-nose pliers. Photograph wiring harness before disconnecting. Never touch the ceramic element with bare hands — skin oils cause hot spots and premature failure. Inspect the bracket and gasket (323901-701) and replace simultaneously if worn.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse in original Carrier packaging.

Compatibility: Direct OEM replacement for Carrier PG9MAA060140AAKA gas furnaces. Also cross-references to LH33ZS003, LH33ZS002, and LH33ZS001 in applicable model series. Always verify your existing part number on the igniter body or furnace data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get this part shipped the same day.