I used the services of a technician to replace a burned out key for a water heater. He managed to come the same day I looked for him, and in addition to changing the key, he also rearranged the cables and added new connections so as not to burn so often (twice in the last two years). Give me information and advice in case I decide to replace the entire wiring for the boiler with something better and stronger. The technician himself is an extremely kind, cheerful and competent person. I didn't have to assist him as often happens or serve him with an instrument - he had everything! The price was completely reasonable and I would recommend it to everyone!