System Sizing Errors Cost $1,500 to $4,000 in Unnecessary Replacement Expenses
https://precisionhvacrepair-residential-sac-near-river-view-park2907.hexaforgey.com/posts/heat-pump-efficiency-drops-below-35-degrees-repair-or-replace-decision-thresholds
The compressor is typically the most expensive single component in an HVAC unit, often costing $1,500 to $4,000 for replacement. However, the true expense depends on whether your system was sized correctly using Manual J load calculation standards