subject: Which Water Heaters Are Most Efficient? [print this page] If it is time to shop for new water heaters for your home, think efficiency. Many models are much more efficient than those that are sitting in your home right now. If your current heater is ten or more years old, chances are good newer models are going to reduce how much energy it takes to deliver that hot shower or wash those dishes. The question is, though, which ones are the most efficient and therefore worth your money?
Read the Label
It is always a good idea to compare your options by the model. To do this, look for the Energy Star guideline provided on the model. The Energy Factor, as it is called, tells you how much energy it will take to operate the device. This can range from .5 to 2. The higher the number is, the more efficient the device is. Another consideration is the First Hour Rating, which tells you how many gallons will be produced during peak times of use. Most will be rated between 50 and 67 gallons per hour.
Compare Your Options
Since there is such a range of options for these devices, it is best to turn to the seller to determine which models on hand are most efficient. Knowing how many options you have can help.
One option is solar powered. However, this type does not work in all areas as efficiently due to the lack of sunlight throughout the year. This option can work well because it takes you "off the grid" when it comes to using energy, but not all models are the same.
Tankless water heaters are also getting a lot of attention for their efficiency because they do not require a large storage tank of water to be heated and then maintained even when not in use. However, because they do not have a tank, they are not often rated in the same way. If you are going with this model, be sure to compare options carefully.
Other options include the heat pump and the conventional heater. Heat pumps generally have an EF of around 2.0 and an FHR of around 50 gallons each hour when they are using electricity to operate. The traditional model, or conventional system, will have an EF of around .64 and an FHR of 67 gallons in some cases.
Take the time to compare all of your options carefully. Water heaters are often a very household-specific investment. Depending on your needs and family size, one option may be better for you than another. Talk to your contractor to determine which is best in your situation.
