Guide
Repair or replace: making the call
There is no single age at which an air conditioner must go. The decision comes down to what failed, what the rest of the system looks like, and how much more repair it is likely to need.
Questions that settle most cases
- Which part failed? A capacitor or contactor is routine. A compressor or indoor coil is a major repair.
- Is there a leak? Leaks in the coil tend to recur.
- Do the indoor and outdoor halves match? A mismatched system rarely reaches its rated efficiency.
- Is the cabinet rusting through, or the coil fins crumbling?
- Has the house changed, such as new rooms, new windows or added insulation?
The refrigerant factor since 2026
The EPA says owners can keep repairing existing R-410A systems, including replacing a compressor or the condensing unit (EPA homeowner questions). A whole new system, though, has to use a lower-GWP refrigerant.
That makes partial replacement worth a careful look. A new condenser on a sound coil may buy years at a lower cost. Replacing both halves at once means a new refrigerant and possibly new line sets, but resets the clock on the whole system.
Repair or replace at a glance
| Situation | Leans toward |
|---|---|
| Failed capacitor, contactor or fan motor | Repair |
| Clogged drain or iced coil from a dirty filter | Repair and cleaning |
| Compressor failure on a system with a sound coil | Either; compare quotes |
| Repeat coil leaks | Replace the coil, or the system |
| Rusted cabinet, failing compressor and an old coil | Replace |
General patterns only. A contractor's inspection decides.
Getting two answers
For a major repair or a full replacement, a second opinion is reasonable. Ask each contractor to write down the failed part, how they tested it, and the model numbers they propose. That makes the quotes comparable.
The replacement page lists what drives the cost of a new system.
Where these facts come from
Get a heating and cooling contractor on the phone
Say what the system is doing and how old it is, if you know. The person you reach works for an independent contractor in Southeast Texas, not for this website.