When Replacement Makes More Sense Than Repair
The rule of thumb is the "5,000 rule": multiply the repair cost by the system's age in years. If that number exceeds $5,000, replacement is generally the better financial decision. Beyond the math, there are practical triggers: a system over 15 years old with a failed compressor is rarely worth repairing regardless of the math. R-410A equipment will be increasingly expensive to service as that refrigerant is phased out. Repeated failures in different components over 24 months are a sign the system is at end of life, not just having a bad run.