ecobee Programmable 3H/2C Wi-Fi Thermostat and Energy Management System

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Item #: EB-EMSSi-01

The ecobee EMS Si is a practical energy management solution that will save you time and money. ecobee’s Energy Management System is perfect for situations where a simple thermostat just isn’t enough and a full-scale building automation system would be costly and over complex. 

Through the Web Portal, changes can be applied across unlimited thermostats and multiple locations with a single click. The ecobee EMS Si can also send regular maintenance reminders and alerts based on system performance. The Reports feature tracks performance of multiple locations, analyzes systems reports, conducts remote diagnostics and assesses performance, all from the Web Portal. 

Features and Benefits
  • Up to 4H/2C conventional and heat pump applications
  • 7 day programmable
  • Ideal for applications where a single programmable thermostat does not provide adequate controls
  • User-friendly
  • Reduces a building’s operating costs while delivering increased energy efficiency
  • Manages an unlimited number of thermostats and locations from one portal
  • Alerts and service reminders
  • Performance tracking and analysis
  • Remote diagnostics
  • Applications available for iPhone, Android and Blackberry
  • Hardwired
  • 3-year warranty
Product Specifications
Up to 4H/2C conventional and heat pump applications
5.50” x 3.25” x 1.00” (WHD)
Display Size
3 in2
Input Voltage
24VAC, 3VA minimum 
Operating Temperature
32° to 130° F
Operating Humidity
5% to 95%, non-condensing
Storage Temperature
14° to 140° F
Temperature Sensors
Not applicable
Short Cycle Protection
240 to 900 seconds
Internet Connectivity
Control Range
45° to 92° F


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ecobee Smart Si Thermostat Training
ecobee Smart Si Thermostat Training

Learn about the Smart Si thermostat, all three internet enable thermostats, new remote sensor module and new features of the personalized web portal.