Digital thermostats give consumers the most flexibility in settings and other features, according to the U.S. Department of Energy. Using digital --- or programmable --- thermostats as directed, the Environmental Protection Agency found that consumers can save as much as £117 a year. Programmable thermostats also help the environment by reducing greenhouse emissions, which is an important step in fighting global warming.
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Turn off the power to the air handler at the breaker box.
Pull the front of the thermostat from the wall.
Detach each wire on the subbase. Label each wire with the code on the terminal it comes from.
Unscrew and remove the old subbase from the wall.
Mount the new subbase.
Match the wires to the correct terminals, using the labels, and connect them.
Snap the digital thermostat to the new subbase.
Tips and warnings
- Place the thermostat away from windows, doors and skylights to avoid false readings.
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