![My heat-only system only has two or three wires connected to the thermostat. Am I compatible with ecobee? My heat-only system only has two or three wires connected to the thermostat. Am I compatible with ecobee?](https://storage.googleapis.com/article_attachments/227874667/24vactransformer.png)
My heat-only system only has two or three wires connected to the thermostat. Am I compatible with ecobee?
![Dual Zone electric with air handler. Separate O and B on the current thermostats. Only O used. Where should O go on the ecobee thermostats? : r/ ecobee Dual Zone electric with air handler. Separate O and B on the current thermostats. Only O used. Where should O go on the ecobee thermostats? : r/ ecobee](https://i.redd.it/i6t8kbzvmta91.jpg)
Dual Zone electric with air handler. Separate O and B on the current thermostats. Only O used. Where should O go on the ecobee thermostats? : r/ ecobee
![My heat-only system only has two or three wires connected to the thermostat. Am I compatible with ecobee? My heat-only system only has two or three wires connected to the thermostat. Am I compatible with ecobee?](https://storage.googleapis.com/article_attachments/227874667/Untitled_Diagram__10_.png)
My heat-only system only has two or three wires connected to the thermostat. Am I compatible with ecobee?
![I have two separate R wires on my thermostat. What do I need to know about my ecobee thermostat installation? I have two separate R wires on my thermostat. What do I need to know about my ecobee thermostat installation?](https://storage.googleapis.com/article_attachments/Dual%20transformer_Fast-Stat-Wiring%20Diagram.png)