Furnace thermostat move/rewire - who to call? (2025 Update)

Call an HVAC person.

The job is a no-brainer. Call a handyman-- he'll be cheaper. Electrician or HVAC guy are overkill.

The difficult part is to run the wire through the wall. In most cases, a handyman can do this. It is a low voltage setup so an electrician is not needed. You just disconnect the existing wires and put them back on the same terminals in the new location.

Are those the only two choices? Between those, I'd choose the electrician. Since it's an electrical job.

Except for the less expensive thermostats with a bimetallic strip and mercury switches, most setback thermostats have both batteries and a low-voltage control wire harness (allowing for fan, heating and cooling control). The wire is small guage and typically no more than

For low voltage such as this, most of the relocation cost is running new wire from the furnace to the new location, fishing it down inside the wall. I would leave the existing line in place until the new connection is verified as operating properly. Abandon the existing line by pushing it back into the wall and disconnecting it at the furnace end.

I would suggest that a heating system installer would be less expensive than a licensed electrician. They have to be able to perform this task in new construction.

I had a guy who coulnt fine were the old wiring is on the boiler ? what good is that when he ws an electrician

I had a LIC. Electrician who could not find the old wiring to my boiler to set up a new wire?