OEM Carrier 24V 40VA Control Transformer for PG9MAA060080ADKA

The control transformer steps your incoming 120V line voltage down to the 24V control circuit that powers the thermostat, control board relays, gas valve, and contactor coil on your Carrier PG9MAA unit. Nothing in the low-voltage system works without it. When the transformer fails you'll typically see a completely dead thermostat, no response on any call for heat or cool, and a unit that appears to have no power even though the breaker is on and the blower hums when forced. A transformer that buzzes loudly, runs hot, or has a faint burnt smell is on its way out — often from a shorted gas valve coil or a pinched thermostat wire that overloaded the secondary winding. This OEM transformer is rated 40VA with a 120V primary and a 24V secondary, sized to carry the full PG9MAA control load with margin for inrush when the gas valve and contactor energize together. It uses the factory mounting footprint and color-coded leads for a direct, no-adapter replacement. With transformers, OEM rating matters. A correctly sized 40VA OEM unit handles the combined coil load without overheating. Undersized or generic transformers with thinner windings sag under load, dropping secondary voltage below the level the gas valve and board need — causing intermittent dropouts, chattering relays, and shortened life. Always correct the original short before installing a new transformer or it will fail again. Install difficulty: 2/5. Tools needed: 1/4" nut driver, multimeter, and wire nuts or spade connectors. SAFETY: Kill the breaker to the unit before wiring — the primary side carries 120V line voltage. 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 PG9MAA060080ADKA. 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.