How much does it cost to replace a control board on an AC unit?

Replacing the control board on a residential air conditioning unit typically incurs a total cost ranging from four hundred to one thousand dollars, factoring in both the price of the replacement electronic part and professional technician labor. The circuit board component itself usually costs between two hundred and six hundred dollars depending on whether it is a standard single-stage cooling board or an advanced communicating variable-speed inverter board found in high-efficiency systems. Labor charges add an additional one hundred to three hundred dollars based on local hourly rates and the complexity of accessing the equipment enclosure. If the AC unit is still covered under the manufacturer's parts warranty, the cost of the replacement board may be fully covered, leaving only the diagnostic and labor fees for the homeowner.

Replacing a faulty electronic control board (or defrost control board) in a central air conditioning system typically costs between 300 and 750 dollars including professional technician labor. The replacement circuit board part itself generally ranges from 150 to 450 dollars depending on whether the system is a standard split unit or a complex variable-speed communicating inverter system. Professional HVAC labor accounts for an additional 150 to 300 dollars for diagnostic testing, safe electrical discharge, wiring disconnection, and secure mounting of the new board. If the failure was caused by an external electrical power surge, technicians often recommend installing a surge protector. You can verify accurate pricing by requesting a detailed written estimate from a licensed HVAC contractor.