ChocolateGautama3 t1_iyp52rn wrote

Reply to comment by GinWithJennifer in Electrician by FedMilkerson

Likely a loose connection in one of the switches or light fixtures. A lot of older houses in this area have a general lighting circuit and the furnace pilot/blower will be tapped off of it. Thermostat will go down if the transformer on the furnace goes out.