Fixing a 20-year-old AC unit can be worth it if the repair costs are low and the system runs efficiently

http://connergjhl576.cavandoragh.org/to-fix-or-not-to-fix-evaluating-the-value-of-repairing-a-20-year-old-ac

Fixing a 20-year-old AC unit can be worth it if the repair costs are low and the system runs efficiently. However, consider energy efficiency and potential future repairs before deciding