Sorry if this is the wrong place to post this, new to reddit.
I am trying to install a new wifi thermostat that needs a C wire. When I open my furnace, it looks like there is a brown C wire, but when I pull the existing thermostat off the wall, it looks like that corresponding brown wire is hooked up to W2.
There's also an unused blue wire on both ends, but trying to figure out if I have a C wire or not. Thanks in advance!
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