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A programmable thermostat is designed to adjust the ambient room temperature according to a number of settings that take effect at different times throughout the day to account for environmental conditions associated with daytime and night weather.
They are designed to save you money by keeping the climate more mild when you're home, automatically warming or cooling (depending on the season) your home to the perfect temperature just as you get back from work without wasting money by running the HVAC system all day while no one is there.
Space heating
The US Department of Energy has found heating and cooling accounts for about 56% of the energy use in a typical U.S. home, making it the largest energy expense for most households. A wide variety of technologies are available for heating and cooling which have a wide range of efficiencies in converting energy into useful hot or cold air.
In addition, many heating and cooling systems have certain supporting equipment in common, such as thermostats and ducts, which provide opportunities for saving energy.
When looking for ways to save energy in your home, be sure to think about not only improving your existing heating and cooling system, but also consider the energy efficiency of the supporting equipment and the possibility of either adding supplementary sources of heating or cooling or simply replacing your system altogether.
Supporting equipment for your heating system
Dehumidifying heat pipes allow central air conditioners and heat pumps to deliver drier air. Thermostats and ducts provide opportunities for saving energy by being able to regulate the temperatures better. Electric and gas meters allow you to track your energy use more closely.
For most heating and cooling systems, programmable thermostats provide an inexpensive and effective way to save energy by monitoring what you're using when so as not to be intentionally wasteful.
