To keep your equipment running efficiently and maximize the useful life of your system all equipment needs to have an annual tune-up. At least once a year heat pumps and air conditioners require a professional tune-up. Inspections on boiler and furnace systems should include ductwork, pipes, dampers, valves, the chimney, registers, radiators, pumps, blowers, fuel lines, the gas meter, oil tank and every part of the actual furnace and boiler. Meanwhile, heat pump and air conditioning unit inspections should also include inspections of the fan, compressor, indoor coils, outdoor coils, line kits and refrigerant lines.