Recent Review: It went very well. The technician had available a used motherboard, and installed that to keep the system going until the new motherboard was received. Then he quickly came out and installed the new one. There was some discussion about charging for labor. But I brought in my warranty papers showing free parts and labor for 10 years, and it was agreed to. Air Tech now has a chart of set prices for most service calls, starting at $189 and going upwards, with extent of work. The $189 does seem a bit high for a simple task, but the owner explained that it is the average of past charges for the simpler tasks.