Compressor Failed at Fourteen Years: The Arithmetic Decided

A system that stops cooling outright, with the outdoor unit running a few seconds and cutting out on a click. Behind it, cooling thinning across the preceding hot seasons and a bill climbing with it, both slow enough to dismiss until the stop.

A short run and a click has two causes that look identical from outside: a starting component that can no longer turn the motor, or a compressor that can no longer turn at all. One is a cheap part and the other ends the machine, so the cheap one is cleared first. On an ageing system a third question follows either answer, which is what condition everything else is in.

A seized compressor is sealed inside its own casing, so nothing on site reverses it. That part of the answer is quick. The slower part is that a compressor rarely fails alone on an old system: the coil, the blower and the board have run the same hours in the same heat, and they age together. Replacing one part of a set that aged together buys the life of the newest component, not the life of the machine.

Two figures, both written down. A swap covers the part, the labour and a recharge, and leaves every other component on its original clock. A replacement costs more at the counter, resets warranty across the whole set, and draws less for the same cooling. Past twelve years those two numbers converge, which is what makes the swap a poor buy at that age and a clear one at seven.