Water heaters and storage tanks are important components of residential plumbing systems that provide hot water for bathing, cleaning, dishwashing and other household tasks. These devices do not wear out as quickly as other plumbing parts; however, it is important to maintain the safety and efficiency of your system by keeping all components in good condition. The two main types of water heaters used in homes are tank-style water heaters and tankless heaters. Tank-style heaters store hot water inside the unit until it is needed, then distribute the heated liquid directly into the home’s plumbing system through one or more output lines at a preset temperature level (usually between 120°F – 140°F). Tankless water heaters use electricity to generate hot water as needed within seconds rather than storing large amounts of heated liquid at once.