Though I'm on the Upper West Side of Manhattan and they're deep in Brooklyn, they promptly scheduled a house call to service my Sharp portable A/C, which had spontaneously shut off for no obvious reason . The serviceman, Ryan, was as polite and efficient as could be, identified the problem, fixed it, and charged only a nominal amount ($30) above the basic service fee ($70) for a house call. (He also patiently put back the foil wrap I keep on the exhaust hose as improvised insulation, which had come undone in the course of the work.) Finally, he said that if the problem recurred, he would come back without further charge.