OEM Carrier Flame Sensor for PG95XAT30040AAAA 95% Gas Furnace

The flame sensor in your Carrier PG95XAT30040AAAA is a single rectifying rod that sits directly in the burner flame and confirms to the control board that gas has actually ignited. It works by flame rectification: a tiny microamp current passes through the flame to ground, and the board relies on that signal to keep the gas valve open. When the rod oxidizes or develops a hairline crack, the signal falls below the board's threshold and the furnace lights briefly, then closes the gas valve — a textbook short-cycle. Homeowners usually notice burners that fire and immediately go out, heat that never builds, or a furnace that locks out after a few failed attempts and flashes a flame-sense error. Specs: This is a stainless-steel/Kanthal sense rod with a porcelain insulator and a 1/4" quick-connect terminal. A healthy flame signal on this Carrier platform reads roughly 1–6 microamps DC; below about 0.5–1 µA the board will lock out. The mounting bracket and rod bend are matched to the burner so the tip sits in the hottest part of the flame. OEM vs Generic: Reliable flame sensing depends on a clean rod placed exactly where the flame is hottest. OEM sensors use the precise rod length, bend, and insulator rating to deliver a strong, stable microamp signal. Generic rods are frequently sized wrong or made from lower-grade alloy that oxidizes faster, producing weak signals, repeat lockouts, and a return no-heat call. Install (difficulty 1/5): You need a 1/4" nut driver, fine emery cloth, and a multimeter that measures microamps to verify the new reading. Safety first — shut off the gas and kill power at the furnace switch before removing the old rod. Never sand a new rod. Ships same business day from our stocked warehouse on orders before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model PG95XAT30040AAAA. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.

Shipping & Returns

Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.