Diagnostic Guide

AC Compressor Not Working

AC compressor not working? Learn about failure signs, repair costs ($1,500–$3,000), and when to replace.

The compressor is the most critical and expensive component in your AC system. It circulates refrigerant between indoor and outdoor units.

Common Causes

Electrical Failure

Power surges or damaged wiring can burn out compressor windings.

Refrigerant Issues

Too much or too little refrigerant strains the compressor.

Lack of Maintenance

Dirty coils and clogged filters force the compressor to work harder.

Age and Wear

Compressors typically last 10–15 years before internal components wear out.

Estimated Repair Costs

RepairCost Range
Compressor replacement$1,500 – $3,000
Compressor with warranty (labor only)$600 – $1,200
Full system replacement$7,500 – $17,000

Should You Repair or Replace?

For systems under 10 years with warranty, compressor replacement is worthwhile. For older systems, the cost is better invested in a new system.

See full HVAC replacement cost guide

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Frequently Asked Questions

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