good points here, but there is no outside wiring or wire underground going somewhere, not well pump, this house is in the city, or sump pumps. Heating is gas and it is not working at the same time. And yes I have already explained to the owner that setting the tstat to very low temperature will not cool faster.
I always use a car as a way to get a home owner to understand changing the temperature setting allot is wasting energy,
a car uses the most energy accelerating up to speed, while it uses the least when it just has to maintain the speed, this is why the cruse control achieves the best gas mileage in most cases, and a person who changes speed allot will get the worst gas mileage.
If your changing your temperature setting allot you will use much more energy then if you set it and forget it, even just a few degrees change can have a dramatic effect on your bill, turning off the system completely then trying to turn the system back on every day especially after the day sun has heated the house up will even make it more costly.
What most people don't realize is your not just changing the air temperature, but also changing the temperature of all the mass in the controlled area, walls, furniture, floors, every thing , also by allowing the controlled area to become humid adds the mass of the moisture in the air to the load until it can be removed again, we call this "removing the heat content" In my house I have found through some test that unless I'm going to be gone more then 3 days it is not cost effective to touch the temperature setting, and even then I only would raise it a few degrees. and when I return I wait until the sun has long set before I even try to lower it.
There have been studies that has shown that these programmable stats have cost home owners much more in lost energy then they save because people was trying to change the temps too much and or too often (I got rid of mine)
Our utility is among some of the highest in the country for electricity, (.16 cent per KWH) so it was a big thing for me to find that sweet spot when it came to air conditioning settings as it didn't take much to cause my electric bill to jump when messing with the temp settings.
But as others have said, to know where all the watts are going would take a total study to get a picture of the whole, as there are many things that can cause high electric bills, we get these request allot around here just because of our high electric rates.