For reconnecting a wire would be my minimum charge. 1½ hrs, truck charge, taxes. $150 is cheap. Even for a honest residential company here.Yep, one will always get a better price when quoted in the off seasons of mild weather like spring and fall. In fact the reason I've had to learn about hvac is because I refuse to pay the rip off pricing or wait 1 to 2 weeks for a hvac person to show up with normal prices. When companies want to charge you $50 for reconnecting a loose wire on top of their $90 service call you realize how unethical this industry is. or the biggest lie they all engage in is telling you how f***ing expensive refrigerant is because of epa regulations, etc. and then you look up the price and it's 1/20th what they quoted you.