OEM Carrier Flame Sensor for PG8UAA036065AAJA Gas Furnace

The flame sensor is the safety device that proves your furnace's burners actually ignited. It sits in the burner flame and generates a tiny microamp current through flame rectification; the control board reads that current to confirm combustion. When the sensor gets coated in oxide or carbon, the signal drops and the board shuts the gas valve within seconds as a safety measure. Homeowners notice this as short-cycling: the furnace lights, runs for 3-7 seconds, then shuts off, often repeating several times before locking out with no heat. A failing sensor is one of the most common causes of intermittent no-heat calls. This is a single-rod rectification sensor built to Carrier's exact rod length, gauge, and mounting bracket geometry so it sits at the correct depth in the burner flame for your PG8UAA cabinet. Expected flame current with a clean rod is typically 2-6 microamps DC, well above the board's roughly 0.5 microamp dropout threshold. The ceramic insulator is rated for continuous high-temperature burner exposure. Generic flame sensors often use thinner rods or shorter insulators that sit at the wrong flame depth, producing a weak or unstable signal that triggers nuisance lockouts even when the furnace is otherwise healthy. An OEM rod restores the original flame-current margin. Install difficulty: 1 of 5. Tools: 1/4" nut driver, fine emery cloth, and a multimeter set to microamps DC to verify flame current. SAFETY: turn off both power at the breaker and the gas supply before removing the burner-area component. Reseat the sensor fully and confirm the ground path. Ships same business day from our stocked warehouse on orders placed 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 PG8UAA036065AAJA. 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.