Clarify what “cannot be repaired” means

Ask the provider whether they mean the leak itself cannot be reliably repaired, the coil is unavailable, no approved replacement matches the installed system, or a repair would cost too much to recommend. Those are different answers.

Request the exact coil and outdoor-unit model numbers, the location of the leak, and the test used to find it. Low refrigerant alone does not identify a leaking coil. Carrier describes locating the leak as a distinct step in professional refrigerant repair. Carrier leak-diagnosis guidance.

If the part is unavailable, ask whether that was confirmed with the manufacturer or distributor and whether it is a permanent discontinuation or a temporary delay.

Check coverage and total cost

Locate the warranty certificate and registration record for the actual equipment. Ask which parts, labor, refrigerant, and related expenses are covered, which are excluded, and who must perform the claim work.

Warranty options vary. Carrier's current U.S. information includes conditional parts and labor choices, illustrating why “all warranties cover parts only” is not reliable advice for every system. This does not establish coverage for your unit. Carrier warranty information.

Get a complete coil-replacement price and a complete system-replacement price with the same relevant installation scope. Ask what each includes and what existing equipment remains.

Decide from evidence

If an approved coil is available, the rest of the system is in reasonable condition, and the total repair cost makes sense, a component repair deserves consideration. If compatibility, availability, repeated failures, or broader equipment condition changes the economics, replacement may be the better choice.

Ask what measured findings support that recommendation. Age alone should not substitute for this comparison.

Your next step is a written diagnosis and itemized options. If the provider cannot explain the repair limitation, get a second opinion before authorizing a full replacement. Keep the equipment off if the provider identifies an operating or safety concern.