Digital thermostats offer the most features in terms of multiple setback settings overrides and adjustments for daylight savings time but may be difficult for some people to program.
Energy savings per degree thermostat.
When asked for my most helpful tips for summer air conditioning i have four favorites.
If everyone used an energy star certified smart thermostat we would save 56 trillion btus of energy saving 740 million each year and offset 13 billion pounds of greenhouse gas emissions each year equivalent to the emissions of 1 2 million vehicles.
If you set the temperature back for non occupied hours you won t realize any savings.
For every degree you turn down your thermostat and leave it there you save between 1 and 3 percent of your heating bill not to be confused with your gas bill if you have a gas dryer range and or clothes dryer.
Most programmable thermostats are either digital electromechanical or some mixture of the two.
Set the thermostat up a few.
For example the doe s energy savers website says that you can generally save 3 on your heating bill for each degree that you turn your thermostat down during the winter.
On average i would estimate that adjusting your thermostat could change air conditioning costs about 10 percent per degree you change for the first few degrees from 75 degrees.