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This OEM Carrier transformer steps line voltage down to the 24-volt control power that runs the thermostat, control board, gas valve, and relays in the G1RS100A16 furnace. When the transformer fails, the furnace goes completely unresponsive: a blank thermostat, no ignition sequence, and no clicking relays even though the unit has power. A blown transformer is often caused by a control short, so inspect low-voltage wiring before installing the replacement. This transformer matches the exact primary and secondary voltage and VA rating specified for the G1RS100A16 for a direct-fit swap. Installation is moderate: cut power, label and transfer the primary and secondary leads to the identically marked terminals, and remount with the supplied screws. Using the OEM transformer ensures correct VA capacity so the control circuit stays stable under load. We keep genuine Carrier transformers in stock and ship same-day on orders placed before 3PM CST to get your heat and controls back online quickly. Confirm the VA and voltage stamp matches your original.
This part is compatible with Carrier model G1RS100A16.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.