tflfb wrote:
/snip/
I wonder how they are going to find the spot in the attic to drill
the 2X4 header to fish more wire to the thermostat, I have no
objection to drilling a small hole in the ceiling above the
thermostat as a reference guide.

Hopefully they will have the right tools.
I'd use a BASE-BOAR-ZIT and drill up from the thermostat location.

http://www.lsdinc.com/lsdinccgi/sear...ut_number= 15