does model G4CVZ support

[tf_cheng]

I bought two of these thermostats from my local power company's energy conservation sale. Do them support two-stage heat pump? 

[zoeuvre]

Hi tf_cheng, 

Thanks for posting here in the Community forum and for showing interest in our Nest Thermostats. Please provide us with a photo of your current thermostat wiring configuration so we can take a look at its compatibility with our Nest Thermostats. 

On the other hand, you may use our Compatibility Checker tool to check for your heat pump's compatibility with our Nest Thermostats. 

I'll look forward to your response. 

Best,

Zoe