The plumbers that work in the plumbing company should be licensed and well trained. They must have several years of experience in the plumbing industry. The plumber company should have at least 3 years of experience in the plumbing field. New plumbers are lack of experience cannot handle a plumbing job efficiently. If you are interesting in hiring a plumbing service, you should make the appointment 1 week in advance so that they can make the necessary arrangement.