ecobee3 lite Smart Thermostat

This is the type of Thermostat we will be installing on the Performance Options.
(this thermostat can also be substituted for a NEST at no cost if you have a personal preference)


Where comfort meets savings. Well-priced with the essential features to start saving you up to 23%* annually on heating and cooling. Connect to SmartSensor (sold separately) for better comfort in the rooms that matter most.


Notifications and reports

  • Home IQ –Get a monthly savings report and compare your results to other homes in the area. It’s like an energy audit at no extra cost.
  • Alerts & Reminders –The app notifies you of sudden temperature drops that could result in frozen or burst pipes and when the system needs maintenance.


Advanced thermostat capabilities

  • Smart Recovery

As ecobee3 lite gets to know your home’s heating and cooling patterns, it learns how long it takes to reach your desired temperature. If you routinely wake up at 6 a.m., Smart Recovery will start heating and cooling your home in advance so it’s comfortable when you wake up.

  • AC Overcool to Dehumidify

This feature will use your air conditioner to lower the indoor humidity to keep you cool and comfortable if you don’t have a dehumidifier.

  • Supports two-stage heating and cooling

ecobee thermostats are optimized for one or two-stage heating and cooling equipment. Staging control lets you get the level of comfort you like while lowering energy use.

  • Fan Dissipation

ecobee3 lite automatically runs the fan after a cycle to maximize heating, cooling, and dehumidification.

The right temperature in the right spaces with SmartSensor

  • Smart Home & Away- Automatically adjusts the temperature for energy savings when you leave home and restores your comfort settings when you return.
  • Follow Me
  • Detects which rooms are in use and adjusts the temperature accordingly for comfort in those spaces.



  • Height: 106 mm (4.17 in.)
  • Width: 45 mm (1.8 in.)
  • Depth: 50 mm (2 in.)

Wall plate

  • Height: 119 mm (4.7 in.)
  • Width: 45 mm (2.95 in.)
  • Depth: 7 mm (0.3 in.)


  • White with thin multi-color LED

Operating environment

  • Only install in a dry indoor location

Electrical requirements

  • Rating: 120V AC 60Hz
  • 600W incandescent
  • 150W LED and CFL
  • Neutral wire required
  • Works with single/double/multi-switch
  • Not compatible with 3-way switches
  • Rocker style plates


  • Neutral and ground wire required
  • Automatic line and load wire switching


  • Occupancy
  • Ambient light
  • Voice & audio
  • Built-in Alexa Voice Service
  • Built-in microphones
  • Built-in speaker
  • Far-field voice recognition
  • Connectivity
  • Wi-Fi, IEEE 802.11 b/g/n @ 2.4 GHz
  • Wi-Fi Protected Access (WPA/WPA2) and Wired Equivalent Privacy (WEP)
  • DHCP (dynamic) Transport Layer Security (TLS)
  • 915 MHz


  • Screws


  • 15+ MB/month (dependent on Alexa Voice Service usage)


  • Recycled packaging
  • Mercury-free
  • Arsenic-free
  • PVC-free
  • ROHS compliant


  • −31° to 113°F (−35° to 45°C)
  • 5% to 95% RH (non-condensing)


  • 1-year limited warranty