OEM Carrier Transformer for PG9MAA036080ACKA 90% Gas Furnace

The control transformer steps your incoming 120V line voltage down to the 24V that powers the thermostat, gas valve, relays, and integrated control board in your PG9MAA036080ACKA. When it fails — usually from a shorted secondary or a sustained overload — the furnace goes completely dead: no thermostat display, no response to a heat call, no inducer or igniter activity, and sometimes a faint burnt-electrical smell or a low-voltage fuse that blows the instant power is restored. Carrier furnace transformers are typically rated 40VA with a 120V (sometimes 208/240V multi-tap) primary and a 24V secondary, protected by a 3A or 5A blade fuse on the control board. The VA rating must meet or exceed the original so the 24V circuit can carry the gas valve and relay loads without voltage sag. An undersized or loosely-wound generic transformer droops under load — 24V can sag to 19-20V when the gas valve and inducer pull at once, causing erratic ignition, chattering relays, and dropped thermostat calls. Generic units often use lighter-gauge windings and cheaper laminations that run hot and fail early. This OEM transformer matches the VA rating, tap configuration, and mounting footprint exactly. Install difficulty: 2/5. Tools needed: 1/4" nut driver, multimeter (AC volts), wire strippers, and quick-connect terminals. #1 SAFETY WARNING: kill the breaker before servicing — the primary side carries lethal line voltage. Verify the primary tap matches your supply voltage before energizing the new transformer. 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 PG9MAA036080ACKA. 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.