Choosing a Water Heater That's Energy Efficient & Reliable

A water heater is one of the larger energy users in the home. Hot water is used for many of the daily activities we perform. People do not often look for a new water heater unless they need to replace the current one. For that reason, they normally do not spend a lot of time comparing prices and looking for more efficient heaters. It is worth the time it takes to research water heaters before purchasing a new one for your home.

Water heaters generally have an EngeryGuide label on them. This gives information on energy efficiency and the average yearly cost to operate. When buying a water heater-check the EF numbers on the label. A higher EF signifies a more efficient model. The more energy efficient models start at EF 0.93 and above for 60 gallons or less. More than 60 gallon models start at EF 0.91 and higher. Initially, the water heater may cost more. But, you save more over time with the lower operation costs.

It is also important to check the manufacture warranty on a tank. Water heaters with a longer warranty are normally more durable. The manufacturer expects them to outlive that warranty period.

There are two types of electric hot water heaters--the tankless and the traditional (with a storage tank). Tankless water heaters only heat water when there is a demand. With this style the same water is not constantly reheating when there is no usage. They can provide an unlimited amount of water, but a smaller volume (of water) than the traditional water heater. So, the tankless option is not always appropriate for larger homes.

The Marathon Lifetime heater has a seamless, blow-molded polybutylene tank. The bottom of the tank is shaped in a way that it fights the build up of sediment. The tank has 2 ½" of Envirofoam insulation. They range in size from 15 to 105 gallon capacity tanks. This model of water heater frequently has to be purchased through local utility companies, cooperatives or a Rheem or Ruud wholesaler. Our local Menard's carries this unit as a service to our electric cooperative. They currently sell the 50 gallon tank for $749.99. It is 0.94 EF. They also have an 85 gallon heater for $849.99. It is 0.92 EF. Our cooperative offers a rebate for $250.00 off these two models. The Marathon website provides a list of where the water heaters can be purchased in each state.

Whirlpool offers Energy Smart electric water heaters. The heater automatically adjusts to homeowner user patterns. This is cost efficient because water is only heated at peak user times. The 40 gallon tank sells for $438.00 at Lowe's. It is 0.95 EF. They also offer the 80 gallon tank for $768.00. It is 0.92 EF.

The PowerStar AE125 tankless hot water heater is made by Bosch. It is a compact point-of-use heater that can be even be installed under the sink. It provides approximately 3 to 3.7 gallons of hot water per minute. The amount of water is dependant upon what is appliance(s) is/are being used at the time. This model can be purchased through most home centers, hardware stores, plumbing and heating distributors. The cost is $688 at Lowe's. It is 0.94 EF.

The Seisco RA-32 is a tankless electric water heater. It is a back up for solar and geothermal heat recovery systems. It works well in cold climate areas. The cost is $845 when purchased from Seisco. It can also be bought from Global Energy Systems for $749.50. It is 0.99 EF.

Until you can replace your old water heater, put an insulated wrap around it. It will save both money and water by reducing heat loss. The blankets vary greatly in price, but average $20 and up. It will depend on the brand you choose. The wrap can be purchased at your local hardware store or home center. It is important to carefully follow the directions in the guidelines booklet if you purchase the wrap. New water heaters do not need insulated blankets. The warranty may be void on newer models if the wrap is installed.

Setting the temperature lower on your hot water heater is cost efficient, too. My cooperative recommends these settings--120 degrees (top) and 115 degrees (bottom) for the controls

Good luck shopping for your new water heater!