OEM Carrier Transformer Replacement for PG8UAA060135ADJA Furnace

The control transformer steps 120V line power down to the 24VAC that runs your thermostat, control board logic, gas valve, and relays on the Carrier PG8UAA060135ADJA. It is effectively the power supply for the entire low-voltage control circuit. When it fails — usually from a shorted thermostat wire or an overloaded gas-valve coil — the furnace goes completely dead: no thermostat display on a C-powered stat, no response to a heat call, no inducer, no ignition. A transformer that buzzes loudly, runs hot to the touch, or smells burnt is on its way out and should be replaced before it strands you. This is a Class II control transformer with a 120VAC primary and a 24VAC secondary, typically rated around 40 VA for a furnace of this size. The secondary is fuse- or breaker-protected on the board, and the VA rating must meet or exceed the original so the gas valve and board don't overload it. Some units use a multi-tap primary (208/240) — match your supply voltage. A healthy unit measures roughly 24–28VAC across the secondary. VA rating and winding quality matter. An undersized generic transformer sags under the combined gas-valve and inducer-relay load, dropping secondary voltage below the gas valve's pull-in threshold and causing intermittent no-heat that is maddening to diagnose. Cheaper transformers also run hotter and fail sooner. The OEM Carrier transformer matches the original VA rating and voltage taps exactly. Install difficulty: 2/5. Tools: 1/4" nut driver, multimeter set to AC volts, and wire nuts or spade connectors. #1 safety warning: kill the breaker to the furnace — the primary side carries 120V line voltage — and verify zero volts before disconnecting the primary leads. 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 PG8UAA060135ADJA. 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.