The EPA and Consumer Reports keep advocating lowering your thermostat 5 to10 degrees at night or when you are not at home. What is the science behind that? Isn't lowering it 15 - 20 degrees or completely shutting off your heat at night or when you are not at home much more energy efficient? I suppose they are just urging folks to do what they think is practical, but they do a great disservice to all those ready and willing to do more than just 5 or 10 degrees. I keep meeting people who think its more energy efficient to keep your house at a consistent temperature, rather than having to cool it down or heat it back up again. This has been disproved many times. But EPA and Consumer Reports may play into that myth by suggesting its more energy efficient to only adjust your thermostat by 5 or 10 degrees. Am I missing something?