Mears thermostat not working properly
We live in a condo which has baseboard heating. We have our individual thermostats in each room to control the heat. In our living room and one bedroom. If we turn the thermostat on a little it goes to 80 degrees. Its like all or nothing. If on its hotter than heck and if off we are colder than heck. Do we have to replace our thermostats? Or how do we resolve this to get our heat back to normal? These thermostats are very old from 1980's, what would we get if we need new ones?