The wire to my thermostat runs up along and ON the exhaust pipe of the furnace, could this be effecting the 'temperature sensor " in the thermostat, as we've noticed the stat takes quite a long time to click on again after it cycles heat, rest of house gets cold before stat clicks on again (maybe from heat in the pipe ? )
It's a plastic shielded wire, but still ?

thoughts here on this ?
should I move it to another hole up the wall ?