During recent renovations, we had to move our existing thermostat. Instead of replacing it with the same dumb 2-wire knob (white/red), I'd like to get a smart thermostat like the ecobee3. All of these new thermostats require a C-line, yet my heater does not have one currently. Can I add one to it?
Details:
Lastly, if it is possible to add a C-wire to this board, is it something a licensed electrician would need to do, or is it safe for a tinkerer like myself to do?
Sure. I've highlighted the C wire in the wiring diagram.
You'll have to bring a wire from the transformer in the heater, up to the thermostat location. This may require pulling a whole new 3 wire cable.
If there's an open terminal where the brown wire attaches to the transformer, you can connect the new C wire for the thermostat there. Otherwise, you'll have to tap in somewhere else.
This image shows how the new thermostat should be connected to the system.
WARNING: If you don't feel comfortable poking around yourself, don't hesitate to contact a local HVAC tech (or Electrician).
