Available on Project MUSE and JSTOR. Online access to Contemporary Literature is available as part of the Project MUSE collections. All back issues of Contemporary Literature beginning with Vol. 1, 1960 are available online through the JSTOR digital archive.
Many manufacturers recommend water heater anode replacement every two to four years depending on the hardness of the water that passes through the tank and the quality of the water heater lining.
When to Replace a Water Heater. If your water heater is leaking or not heating up, you may be able to repair it rather than replace it. Regular maintenance will extend the life of your water heater. Some repairs, such as replacing a pressure-relief valve or heating element are pretty simple.