How much is a contactor for an ac unit?
Replacements can be bought rather inexpensively, there are no special tools needed, and it takes little time to do. Contactors for residential units are typically rather cheap…somewhere in the $20-$30 range. No repairs to your contactor should be made without turning off or disconnecting the power to the unit. Just probe around inside the furnace after cutting the power and it will set off a warning beep if it detects A/C voltage still present. If you are not confident in your electrical knowledge, then you should call an HVAC technician to make this repair.