![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/rwcdiagram.png)
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? 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/gasvalvefaststat.png)
My heat-only system only has two or three wires connected to the thermostat. Am I compatible with ecobee?
![How Wire a White Rodgers Room Thermostat, White Rodgers Thermostat Wiring Connection Tables, Hook-up Procedures for new & old White Rodgers Heating, Heat Pump, or Air Conditioning Thermostats How Wire a White Rodgers Room Thermostat, White Rodgers Thermostat Wiring Connection Tables, Hook-up Procedures for new & old White Rodgers Heating, Heat Pump, or Air Conditioning Thermostats](https://inspectapedia.com/heat/WR_1F90_006f15_DJFc.jpg)
How Wire a White Rodgers Room Thermostat, White Rodgers Thermostat Wiring Connection Tables, Hook-up Procedures for new & old White Rodgers Heating, Heat Pump, or Air Conditioning Thermostats
I have 3 wires connected (Y,W,Rh (have jumper to RC) to my HoneyWell RTH221B thermostat at upstairs but replacing this
![Compatible Replacement for Honeywell 18/3 Thermostat Wire - 18 Gauge 3 Conductor - 50 Foot: Amazon.com: Tools & Home Improvement Compatible Replacement for Honeywell 18/3 Thermostat Wire - 18 Gauge 3 Conductor - 50 Foot: Amazon.com: Tools & Home Improvement](https://m.media-amazon.com/images/I/319mW11sOwL.jpg)
Compatible Replacement for Honeywell 18/3 Thermostat Wire - 18 Gauge 3 Conductor - 50 Foot: Amazon.com: Tools & Home Improvement
![Is my thermos/thermostat wiring compatible with Ecobee 3 lite? How to address/make sense of this Honeywell 'intermediary' unit? DIY-possible or pro install? : r/ecobee Is my thermos/thermostat wiring compatible with Ecobee 3 lite? How to address/make sense of this Honeywell 'intermediary' unit? DIY-possible or pro install? : r/ecobee](https://preview.redd.it/ht1thlo0fh571.jpg?width=640&crop=smart&auto=webp&s=c781a68a9bd9dc0c70d5baf9943c1ee8e7c61d23)