Replacement costs between $1,500 and $4,000 represent 40 percent of total HVAC value
https://numberfields.asu.edu/NumberFields/show_user.php?userid=6841923
The compressor is the most expensive part of an HVAC system, with documented failure-rate metrics and cost-ratio data showing replacement costs between $1,500 and $4,000, which often represents 40 percent or more of a full system replacement budget