![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?
![Trying to replace this old 2 wire thermostat for a newer digital one. Problem is older unit does not have leads labeled or which cable is which. Any help on how to Trying to replace this old 2 wire thermostat for a newer digital one. Problem is older unit does not have leads labeled or which cable is which. Any help on how to](https://i.redd.it/j9mnonzn7nu91.jpg)
Trying to replace this old 2 wire thermostat for a newer digital one. Problem is older unit does not have leads labeled or which cable is which. Any help on how to
![2 to 8 Wire All Thermostats Wiring Diagrams (Honeywell, Nest) in 2023 | Thermostat wiring, Thermostat, Electrical diagram 2 to 8 Wire All Thermostats Wiring Diagrams (Honeywell, Nest) in 2023 | Thermostat wiring, Thermostat, Electrical diagram](https://i.pinimg.com/originals/45/2d/cd/452dcd199d840f3929b6b52f03c0481b.png)
2 to 8 Wire All Thermostats Wiring Diagrams (Honeywell, Nest) in 2023 | Thermostat wiring, Thermostat, Electrical diagram
![thermostat - Adding a C Wire using a 24V AC Transformer to a 2 Wire Heating System for Nest - Home Improvement Stack Exchange thermostat - Adding a C Wire using a 24V AC Transformer to a 2 Wire Heating System for Nest - Home Improvement Stack Exchange](https://i.stack.imgur.com/ZiTlc.png)
thermostat - Adding a C Wire using a 24V AC Transformer to a 2 Wire Heating System for Nest - Home Improvement Stack Exchange
![Adding New External 24v Transformer to Nest with separate Rh and Rc wires - Home Improvement Stack Exchange Adding New External 24v Transformer to Nest with separate Rh and Rc wires - Home Improvement Stack Exchange](https://i.stack.imgur.com/CTJZ1.jpg)
Adding New External 24v Transformer to Nest with separate Rh and Rc wires - Home Improvement Stack Exchange
![2-Wire heat only furnace for Nest E. The Nest is having problems staying powered. Can I use an external 24V power supply? How would I route the additional wires? https://www.amazon.com/dp/B07FT2RCG9/ref=tsm_1_tp_tc : r/ Nest 2-Wire heat only furnace for Nest E. The Nest is having problems staying powered. Can I use an external 24V power supply? How would I route the additional wires? https://www.amazon.com/dp/B07FT2RCG9/ref=tsm_1_tp_tc : r/ Nest](https://i.redd.it/sh6zbm6409h61.jpg)
2-Wire heat only furnace for Nest E. The Nest is having problems staying powered. Can I use an external 24V power supply? How would I route the additional wires? https://www.amazon.com/dp/B07FT2RCG9/ref=tsm_1_tp_tc : r/ Nest
![heating - Wifi thermostat to replace old mechanical 2-wire 110V Honeywell? - Home Improvement Stack Exchange heating - Wifi thermostat to replace old mechanical 2-wire 110V Honeywell? - Home Improvement Stack Exchange](https://i.stack.imgur.com/YnlT0.jpg)
heating - Wifi thermostat to replace old mechanical 2-wire 110V Honeywell? - Home Improvement Stack Exchange
![Hotop 24 Volt C Wire Adapter for Smart Thermostat, UL Listed 16.5ft Long Power Connector C Wire for All Versions of Smart Thermostat Compatible with Nest, Honeywell, Ecobee, Wyze, Sensi - Amazon.com Hotop 24 Volt C Wire Adapter for Smart Thermostat, UL Listed 16.5ft Long Power Connector C Wire for All Versions of Smart Thermostat Compatible with Nest, Honeywell, Ecobee, Wyze, Sensi - Amazon.com](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/712vazLWMGL._AC_UF894,1000_QL80_.jpg)
Hotop 24 Volt C Wire Adapter for Smart Thermostat, UL Listed 16.5ft Long Power Connector C Wire for All Versions of Smart Thermostat Compatible with Nest, Honeywell, Ecobee, Wyze, Sensi - Amazon.com
![Can I install a nest thermostat on a 2-wire boiler (with unmarked wires)? - Home Improvement Stack Exchange Can I install a nest thermostat on a 2-wire boiler (with unmarked wires)? - Home Improvement Stack Exchange](https://i.stack.imgur.com/ZuklR.jpg)