So everyone here says to use a dimmer or a Thermostat for a UTH Control. I have a Rheostat, it sucks at keeping temperatures accurate. So I picked up an actual Honeywell Thermostat. Is this wrong? I'm pretty technical savvy and this does not make sense at all. The thermostats model number is RTH221B, just a cheap thermostat I picked up. None the less, it's a thermostat.
Help would be appreciated.