What type of t stat? if mercury bulb type make sure base is level on wall. If snap action line voltage replace it. If digital make sure cycle rate for your type of system is set correctly, and the ovious is it in a drafty location or being affected by a heat producing item being placed near it .
Answers & Comments
What type of t stat? if mercury bulb type make sure base is level on wall. If snap action line voltage replace it. If digital make sure cycle rate for your type of system is set correctly, and the ovious is it in a drafty location or being affected by a heat producing item being placed near it .