I have a oil furnace and have recently replaced the older dial thermostat with a digital thermostat. The problem I am having is that at times the furnace will not turn off when the desired temp is rached, ie, the thermostat is set at 68 but the furnace will run until it is 74. I thought that maybe air from inside the walls was causing the thermostat to read a different temp so i caulked the holes but am still having the problem. Help!
- posted
16 years ago