Signals that point toward replacement
- Repeated breakdowns across recent seasons rather than one isolated fault.
- A major component failure such as the compressor or a leaking evaporator coil.
- Cooling performance that has declined noticeably even after service.
- Energy use climbing summer over summer with similar weather and habits.
- Humidity control that has gotten worse — the house feels damp at setpoint.
- An older system using a refrigerant with limited or costly supply.
- A repair estimate that represents a large share of replacement cost on equipment already in poor condition.
Signals that repair still makes sense
- One clearly identified component failure on a system that has otherwise been reliable.
- Equipment still under manufacturer parts warranty.
- Coils, ductwork and electrical components in reasonable condition.
- The system still holds setpoint and manages humidity during peak heat.
What to compare between quotes
Look past the headline price. Compare equipment model numbers and matched indoor and outdoor components, whether a load calculation was performed, what duct or plenum work is included, condensate provisions, electrical work, permitting, and the warranty terms on both parts and labor.
Pricing and estimates are set by the independent providers who perform the work, not by this website.
Timing the decision
If the current system is limping but functional, planning a replacement outside peak season usually means more attention and easier scheduling. If it has failed in August, temporary comfort measures matter while you evaluate options rather than deciding under heat stress.
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Frequently Asked Questions
There is no fixed age rule. The practical test is whether the failure is isolated, what the repair costs relative to the system's remaining useful life, and whether the system still controls both temperature and humidity.

