I called up to fix our additional Nest thermostat ...

I called up to fix our additional Nest thermostat on second floor. First floor was already done by the same guy a year ago. The house is same and the wiring are the same. Still he told to replace the wiring to which it would cost $949 for just hooking up the Nest Thermostat which same person did the work for $129 a year ago.

The same day I called up someone else and the work was completed without any wiring change. I would say please pay attention to detail.

The guy only looked at the thermostat and judged the whole wiring which is not good at all. You can't judge a book by the cover.

I am glad I didn't opt for the expensive install and went with a small company who knows what to look for and how to do the job properly.