Hello Everyone.I've got an older heating system, so I'm not sure if I
can install a Nest Thermostat. Can anyone give me guidance as to whether
my wiring is compatible? Thanks!
Hi Jake. I took a look at my furnace and the yellow and green wires are
not connected to anything on that side either. Only the red and white
wires are connected to the control board. Does that mean my system is
compatible?
