Water heater tanks may be made of vitreous enamel-lined carbon steel, stainless steel, or copper.
While copper and stainless steel domestic hot water tanks are more commonplace in Europe, carbon steel tanks are more common in the United States, where typically the periodic check is neglected, the tank develops a leak whereupon the entire appliance is replaced. Even when neglected, carbon steel tanks tend to last for a few years more than their manufacturer's warranty, which is typically 3 to 12 years in the US.
Vitreous-lined tanks are much lower in initial cost, and often include one or more sacrificial anode rods designed to protect the tank from perforation caused by corrosion made necessary since chlorinated water is very corrosive to carbon steel. As it is very nearly impossible to apply any protective coating perfectly (without microscopic cracks or pinhole defects in the protective layer) manufacturers may recommend a periodic check of any sacrificial anode, replacing it when necessary.
If you're in need of a water heater repair, installation, or replacement, call the top-rated professionals at:
ASAP Drain Cleaning
149 Adams St, Olean, NY 14760
(585) 933-0125
https://www.asapdraincleaningllc.com
https://local.google.com/place?id=9521868444497277174&use=posts&lpsid=4243878944251405269
