Typically you would call a plumber for issues relating to water supply, pipes, valves and fixtures, and an electrician for electrical components such as elements, thermostats and electrical wiring. In some cases, the issue can be both plumbing and electrical related and therefore it is best to call a plumber with a restricted electrical licence who can cover all aspects of your hot water system under the one service call fee. Here at King Solar Man, our technician is a fully licensed plumber and a fully licensed electrician. 1 repair, 1 service call fee.