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The 40 gallon water heater is a popular size in many homes today. Choose from natural gas or electric models. 40 gallons is the perfect sized tank for homes or apartments with two to four people. Generally, they are found in homes with one and a half bathrooms.

Running out of hot water with a 40 gallon water heater? It’s easy to upgrade to a bigger tank. The lifespan of a normal hot water heater is around 10 to 15 years. After that, corrosion and sediment build-up inside the tank starts to be a problem.