Use and Care Manual
4
Removing your old thermostat
You will need: Screwdriver, needle-nose pliers
OFF
ON
75
1
2
3
Turn off power
To protect your equipment, turn off 
the power at the breaker box or switch 
that controls you heating and cooling 
equipment. 
Note: The thermostat off switch 
will not turn off the power to the 
equipment. 
Check that your system is off
Change the temperature on your old 
thermostat so that your system starts 
heating or cooling.
If you don’t hear or feel 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.
Remove your existing 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!
OR
OFF
Breaker box
Switch
33-00421ES_A.indd 4 11/7/2018 10:37:44 AM










