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Wifi thermostat

Marlys Hommes asked 3 years ago
I bought a wifi thermostat, the c w iui re is behind my wall not hooked up to my old thermostat.....the other end to the furnance is not hooked up there either...right now on the furnance there is a blue and white wire in the spot going to a humidifier I don't use, can I unhook those 2 and put the thermostat there instead?  
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