Which Nest compatible with my HVAC unit.

[montyferdowsi]

I have two HVAC unit and need to know which Nest product compatible with them.  This is the current thermostat wiring set up.    I know there is three Nest thermostat out there but not sure which if any would work with this system.

[Jeff]

Hi, everyone. 
In an effort to keep content fresh on the forums here and prioritize current issues, I'm going to go ahead and close up this thread. If you have any outstanding issues from this post or any other problems, please feel free to open up a new discussion.
Thanks,
- Jeff