HVAC motor replacement cost, and when the rest of the system decides it

How compressor, coil and motor replacement works

1. Get the diagnosis in writing. Ask which component failed and how that was established: a compressor that will not start can be a failed capacitor, a burned contactor or a seized motor, and the three are wildly different bills. A written diagnosis is what lets a second opinion be a comparison rather than a guess.
2. Ask why it failed. Compressors rarely die of old age alone. Low refrigerant from a leak, restricted airflow from a filthy coil or crushed duct, or a failed start component that ran the motor hard all leave a compressor dead and will do the same to its replacement if nobody fixes the cause.
3. Check what is still under warranty. Many manufacturers warrant a compressor or coil for ten years to the original registered owner, which can leave you paying only labour and refrigerant. It is worth finding the model and serial number and asking the manufacturer rather than relying on the contractor's summary.
4. Weigh the part against the system. Compare the component quote with a full replacement quote on the same visit. On a unit approaching the end of its life, and especially one using an older refrigerant, the repair can be most of the price of a new system with a new warranty and better efficiency.
5. Confirm the refrigerant question. Older systems use refrigerants that are being phased down and are increasingly expensive to buy, and a large recharge on an old system is money spent on a design that is ending. Ask what refrigerant the system holds and what a full charge of it now costs.

When a component failure is a claim, and the ac coil replacement cost it meets

A compressor destroyed by a lightning strike or a power surge is a covered peril on most homeowners policies, and a unit flooded to above its electricals is a replacement rather than a repair. A compressor that wore out is not a peril. Where a surge is suspected, the evidence is the pattern of what else in the house failed at the same moment, and that is worth documenting before anything is disconnected.

Common questions

Is AC compressor replacement cost worth paying on an old system?

On a young system under warranty, usually yes. On an old system out of warranty, often not: the labour, refrigerant and the risk that the underlying cause is untouched can add up to most of a new matched system that starts a fresh warranty.

How long does a coil replacement take?

An evaporator coil in an accessible plenum is commonly a half day to a day, including recovering and recharging refrigerant. A coil in an attic or a tight closet takes longer, and the access is often the reason one quote is higher than another.

Can I just recharge the refrigerant?

Refrigerant does not get used up, so a system that is low has a leak. Topping it up without finding the leak means paying for refrigerant repeatedly and running the compressor in conditions that shorten its life, which is why a leak search belongs in the quote.

Does a new compressor come with a warranty?

The part usually does, and the labour is warranted separately by the contractor. Ask for both in writing, because on a component repair the labour is the larger half and a part warranty on its own leaves you exposed to the expensive bit.

What goes into AC evaporator coil replacement cost?

Recovering the refrigerant, replacing the sealed coil and recharging the system, plus access: a coil in an accessible plenum is commonly a half day to a day, while one in an attic or a tight closet takes longer. Check whether the coil is still under the manufacturer's warranty, and ask what refrigerant the system uses, because older refrigerants are increasingly expensive.

Does new ac compressor cost include recovering and recharging the refrigerant?

It should, and a quote that does not say so is incomplete. Recovery, the sealed repair and the recharge are most of the labour on a component job, which is why an older system's part can approach the price of replacing the pair.

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