Share 'The Nest Learning Thermostat - Good or Not So Much?'

We're moving our office space and doing a lot of the build-out ourselves.  In our HVAC overhaul, we need to replace the manual thermostat with a setback model.  So I bought a Nest b/c I read about it, and it sounded great.  That, and it looks cool. Our HVAC guy ripped it, though.  'Said that they don't work, they don't really do what they're supposed to do, 'worthless, and the company that makes…