How much does AC compressor replacement cost for homeowners?

AC compressor replacement cost varies by system and is confirmed after an on-site diagnostic; CM Heating provides a free estimate before work. The biggest driver is the compressor type and size, which ties to your AC’s refrigerant and capacity. On older systems, our technicians also assess whether a major repair or a full replacement is the better value. Our team often completes repairs in one visit with stocked service vehicles, and we regularly serve Eastside homes, including work in and around Bellevue. A failed compressor often points to an upstream cause, like airflow or electrical issues, that should be corrected at the same time.

Key factors that set price:

• System tonnage and brand-specific compressor
• Refrigerant type and required charge after evacuation
• Accessibility of the outdoor unit and labor time
• Warranty status and any needed parts (filter-drier, contactor, capacitor, or TXV)

If the outdoor unit is buzzing or tripping breakers, turn it off and schedule a diagnostic to prevent further damage. <br/> Updated: 2026-03-24 <br/> Need help in Bellevue, WA? Call (425) 259-0550 or book online.