Thermostat compatibility

[Djkerr]

Real old school thermostat here. Wires are S, R5, and Y6. 
yes, that’s a mercury switch. Will it work with Nest thermostat?

please let me know if I can switch this beast. It’s heat only for an addition. 

[EdwardT]

Hi Djkerr,

Thanks for reaching out. Could you share the make and model of your current thermostat? Also, what type of HVAC system do you have?

Thanks,

Edward

[EdwardT]

Hi Djkerr,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[MelbaDT]

Hi, 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the Community.

Best, 

Melba