Precision Plumbing installs and repairs water heaters in Marinette County and surrounding areas. Replacing and servicing water heaters do not always require the same technical training or licensing as plumbers and other contractors. Look for a company that has a licensed Master Plumber. There is a huge difference from a Master plumber and a master plumber restricted license. Master plumbers have to go through 5 years of school and extensive testing and training. A restricted license is much easier to obtain and only gives the company legal rights to work on appliances.