Nest Learning Thermostat Wiring and how tonupload my photo

[Jerryray88]

• https://www.googlenestcommunity.com/t5/Nest-Thermostats/bd-p/Thermostats?lightbox-node-recent-images... No C wire, but I suspect the Blue may be the common?

Is my old system compatible for an upgrade to the Nest Learning Thermostat

[CoolingWizard · Accepted solution]

@Jerryray88 , you have a heat pump system with Auxiliary heat.  This arrangement is supported by a Nest Learning Thermostat. 

AC Cooling Wizard