Costly unit failures demand immediate dispatch routing to prevent $1,500-$4,000 replacements
https://precisionhvacrepaircenter.timeforchangecounselling.com/failed-components-in-20-year-old-ac-units-determine-whether-repair-costs-make-financial-sense-1
The compressor is the most expensive component in an HVAC unit, typically costing $1,500 to $4,000 to replace