The cost of Watertown heater repair is one of those things that you will need to think about from time to time. The main reason for this is because you would not want to spend much more than you should on the repair service. Take your time and research on the costs. Ask a few contractors you might know to advise you accordingly. Where possible, request for a free quote on the repair service that you need to do, and then from there, you will be in a good position to settle on the best quote for the work.