Storage Tank Water Heaters

Ideal for smaller households

Standard tank-style residential electric water heaters are commonly available with 30-, 40-, and 50-gallon sizes.  Department of Energy efficiency rules require that units manufactured after April 15, 2015, meet higher efficiency standards. As manufacturers add more insulation to meet those rules, the units will be taller and wider and will require more installation space.

The benefits of storage tank water heaters

Electric tank-style water heaters efficiently heat and store abundant supplies of hot water. This proven technology is among the lowest cost option for hot water supplies. And with no fuel lines, combustion, or combustion by-products it is a safe and clean option for homes and businesses.

A storage tank water heater can meet all your hot-water needs for about $30 a month on our off-peak rate.

Rebates are available.

How storage tank water heaters work

Customer often ask if they can install a 50-gallon water heater on an off-peak rate to take advantage of the discounted rates available. The answer is yes! While we have recommended larger units for larger families to ensure an adequate hot water supply, a 50-gallon unit will work for smaller households and those that use a moderate amount of hot water.

Where a larger supply is needed to supply adequate hot water, customers  may want to ask their plumber to install a mixing valve. Adding a mixing valve allows you to set the water temperature to a higher setting without the risk of scalding. The valve mixes cold water with the hot water flowing from your water heater to provide water at a safe and comfortable temperature at the faucet. And doing so increases the available hot water supply. It's like adding a larger water heater without the expense or required extra space! An additional reported benefit is that setting the water heater temperature at a higher setting (140 degrees F.) will control the possible growth of bacteria in the tank.

Mixing valve diagram

Mixing valve extends hot water supply and prevents scalding.

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