OEM Carrier Gas Furnace Hot Surface Igniter for PY3GEAA42090AA

The hot surface igniter is the ignition source for your Carrier gas furnace. Each time the thermostat calls for heat, the control board energizes the igniter and it glows red-hot (1,800–2,500°F) to light the gas at the burners. When it fails, the inducer and blower may still run while producing no heat, you'll often hear the board click repeatedly as it retries, and the furnace will lock out after several failed ignition attempts — leaving cold air at the registers when you need heat most. A cracked or eroded igniter is one of the most common no-heat failures. Specifications: This OEM element is made from silicon nitride, which resists cracking and thermal shock far better than the older silicon carbide igniters that fatigue from repeated heating cycles. Cold resistance typically measures 40–75 ohms on a multimeter; an open (infinite) reading confirms the element has failed. Rated for 120V line-voltage operation, it matches the factory bracket and connector for a drop-in replacement. Why OEM matters: Igniter resistance is everything. A generic element with the wrong resistance won't get hot enough to reliably light the burners, producing intermittent ignition and nuisance lockouts — or it overheats and burns out in a single heating season. OEM silicon nitride holds precise tolerances and endures thousands of cycles where bargain carbide parts crack in months. Installation: Difficulty 2 of 5. Tools needed: 1/4" nut driver and a multimeter. SAFETY: shut off the gas at the valve and cut power at the furnace switch or breaker before servicing. Never handle the ceramic element with bare fingers — skin oils create hot spots that shorten its life dramatically. 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 PY3GEAA42090AA. 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.