Do you guys know of any websites that talk about the efficienty of household appliances and how it has changed over the years?
Household appliances - PsyDAG, Tuesday, April 10, 2012 at 2:41pm
Since this is not my area of expertise, I searched Google under the key words "household appliance efficiency change" to get these possible sources:
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.