6 7
Removing your old thermostat
2 Check that your system is off
Change the temperature on your old
thermostat. If you don’t hear the system
turn on within 5 minutes, the power
is off.
Note: If you have a digital thermostat
that has a blank display, skip this step.
1 Turn power OFF
To protect yourself and your equipment,
Turn off the power at the breaker box
or switch that controls your heating/
cooling system.
3 Remove your old thermostat from the
wall plate
On most thermostats, you can take off
the thermostat by grasping and gently
pulling. Some thermostats may have
screws, buttons, or clasps.
Do not remove any wires from your
thermostat at this time!
OFF
OFF
ON
75
Breaker box
Switch
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