Please tell me facts about energy efficient appliences. How much energy they can save from normal appliences…….answer my question.
Energy efficient appliances and the Energy Star program was born out of the Jimmy Carter, late 1970's, energy crisis. As a portion of that problem, the Energy Star Program called for a continual increase in appliance energy and water usage efficiency; this part of the Program has not been as successful as it could have been. It also called for a phase-in of Energy Star labeling of all appliances sold in the US; as I remember, the energy information is supplied by the manufacturers.
What we do get in the labeling is the cost of use per year based upon some generally set energy cost figures. Often, the hours of use is not well defined on the tag that hangs on the appliance display we look at. And, it is equally hard to discover what energy rate is used in defining the cost per year; even so, who knows off the top of their head what their cost is for a unit of electricity. Many also contain some numbers for actual amount of energy used. There is little or no enforcement nor penalty for not having Energy Star information available on the store floor. (Two years ago we went appliance shopping with a friend and probably 25%-50% of the models had no energy information available on the sales floor in any one of the several stores we shopped.) When we could get Energy Star information, we could at least get a feel for the comparative use between models; we took notes including model numbers and between the various different stores, got a reasonable picture of comparisons among the different makes and models.
As the previous answer indicated, we found it important to try to find out how and why the different makes, models, and price ranges achieved their energy savings. In some cases, one sacrifices functionality for energy savings; of those depending upon how the appliance is used, the savings may not be as great. For example, the most energy efficient stand-up freezers had no shelves with freezing coils for the actual freezing of food. Further, it was assumed that in keeping with food safety standards, that food placed into these freezers was already frozen.
If you think that getting down to firm, cold, facts about different makes and models on the display floor is difficult – Comparing the energy use and cost for use of an existing/older appliance versus a new one on the show room floor is a touch more difficult. To begin with, any numbers you might find are based on the original, new condition of the old appliance. But, there are no tables I'm aware of that enable you to enter the make, model, and year of an existing appliance to find out how much energy it was said to use when it was new. And, then do you remember the year it was purchased or the year it was actually manufactured in? It is possible that you have the original paperwork and Energy Star label. If so, finding out this information is a touch easier. Or, you could search for periodical articles in hopes of getting this information. – It is possible that there is some sort of a government data base or publication with this information but, I'm unaware of it.
Instead, you pretty much are dependent upon local government, utility, and/or sales floor information about the generalities of the worth of replacing models for energy and resulting usage cost savings. In our area, they are saying that if your fridge or freezer is older than 5 years, a new one would probably save energy and definitely if 10 years or older. Water savings as much as energy savings are behind the push for newer washers. But, few of the newer washers have the capability for a hot water wash or the independent selection of hot, warm, or cold water for the various cycles; actual selection of the amount of wash time seems to be a growing thing of the past also. There are fewer numerical choices and combinations of choices on a dryer as well. Instead you select by the type of load and the machine does all the rest for you. I can assure you that I have load of jeans, all of which need the amount of water required for a heavy jeans load but, not all of which have the same actual washing requirements; those used in the yard or under the hood of a car have a different washing requirement than those used in an interior, basically clean environment.
In part, one must consider functionality, how the efficiencies are derived, the needs you have for the appliance, and how you can/cannot utilize the settings for savings beyond the pre-set generalities. In reality, there is no “normal” appliances. If you no longer have the paperwork for your specific appliance, you are left to estimate your current energy usage based upon age, general technology used, and general manufacturing design used. And, beyond that things like door seal condition on any temperature retaining appliance can become critical in arriving at an actual savings figure.