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  3. Thermostat Installation & Wiring Diagrams

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  1. ecobee Support
  2. Thermostats
  3. Thermostat Installation & Wiring Diagrams

Thermostat Installation & Wiring Diagrams

21 articles

  • Installing Your ecobee
  • Installing your ecobee thermostat with the Power Extender Kit (no C wire)
  • Getting Started: Installing your ecobee Thermostat
  • EMS Si Wiring Guide and Connection Description
  • Can I install an ecobee SmartThermostat with voice control on my ecobee4 or ecobee3 lite setup?
  • Installing your ecobee thermostat with a C wire
  • ecobee3 Wiring Diagrams
  • ecobee3 lite Wiring Diagrams
  • SmartThermostat with voice control and ecobee4 Wiring Diagrams
  • My thermostat has only two wires. Am I compatible with ecobee?
  • 3-wire heat-only thermostat (R, G, W)
  • Installing your ecobee with a boiler and AC (dual transformer system)
  • ecobee thermostat installation with an isolation relay
  • ecobee3 lite with 4-wire hot water zone valves
  • ecobee3 lite with 3-wire hot water zone valves
  • Taco SR503-4 Three Zone Switching Relay
  • FAST-STAT installation for heat-only systems

  • General

  • How many wires do I need to install an ecobee thermostat?
  • Can I install it myself?
  • I’m upgrading from ecobee3 to ecobee4, what wiring changes do I need to make?
  • I currently own an ecobee3 and use a Power Extender Kit (PEK). Can I use the same PEK for the ecobee3 lite or ecobee4?
  • I currently own a Smart Si and use a Power Extender Kit (PEK). Can I use the same Power Extender Kit for ecobee3 lite?

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