Ecobee 3 Lite Smart Thermostat

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What is Ecobee 3 Lite Smart Thermostat?

The Ecobee smart thermostat offers unparalleled comfort control and savings to save up to 23% annually on your heating and cooling costs. You can control your ecobee smart thermostat from anywhere at any time through the ecobee smart application. Ecobee 3 lite is easy to install in just 30 min without needing to be professional.

Design and Features

  • Smart Control: Adjust the temperature and switch on vacation mode anytime, anywhere.
  • Home IQ: Get a monthly savings report and compare your results to other homes within the area. It’s like an energy audit.
  • Alerts and Reminders: Sends an alert if there’s an interruption, sort of a sudden temperature drop that would result in frozen or burst pipes, and when the system needs maintenance.
  • Smart Recovery: As ecobee3 lite gets to grasp your home’s heating and cooling patterns, it learns how long it takes to achieve your required temperature. If you routinely come to life at 6 a.m., Smart Recovery will start heating and cooling your target advance so it’s comfortable after you come to life.
  • AC Overcool to Dehumidify: This feature will use your air conditioning to lower the indoor humidity to stay you cool and comfy if you don’t have a dehumidifier.
  • Two-stage Heating and Cooling: Ecobee thermostats are optimized for one or two-stage heating and cooling equipment, allowing you to get the comfort level while lowering energy use.
  • Smart Home and Away: Automatically adjusts the temperature for energy savings after you leave home and restores your comfort settings when you return.
  • Follow Me: Detects used rooms and adjusts the temperature accordingly for comfort in those spaces.
  • Fan Dissipation: ecobee3 lite automatically runs the fan to maximize heating, cooling, and dehumidification.
  • Compatibility: Ecobee thermostats work with most HVAC systems, heating systems, multistage, and dual-fuel heat pumps.
  • Industry-leading Reliability: Ecobee thermostats are powered by an avid 24VAC power supply with a Common wire (or C wire) for solid performance, even within the coldest weather.
  • Voice Control: it’s compatible with Alexa, Apple HomeKit, Google Assistant, Samsung SmartThings, and If This Then That.
  • Energy Star® Certified: Certified to fulfill home comfort and energy conservation standards.
    Easy Install: The included Power Extender Kit allows for installation in most homes without a C wire.

What’s in The Box

  • Thermostat
  • PEK
  • Hardware pack
  • Instructions
  • Wire labels
  • Mounting plate
  • Trim plate

Setup and Installation

Ecobee Application

Ecobee 3 Lite Smart Thermostat Review

9.2Expert Score
Our Verdict
The Ecobee 3 Lite Smart Thermostat is one of the best and most intelligent thermostats.
  • Built-in air quality monitor
  • Updated, more attractive design
  • Works with Siri and Alexa
  • Compatible with most major smart home platforms
  • Air quality monitor of limited use
  • Built-in speaker doesn’t sound great
  • Some features require a subscription

Specification: Ecobee 3 Lite Smart Thermostat



Product Dimensions

‎4.05 x 4.05 x 0.84 inches

Battery Cell Type

‎Lithium Metal

Batteries Required


Batteries Included


Included Components

‎Thermostat, PEK, hardware pack, instructions, wire labels, mounting plate, trim plate

Display Style


Item Package Quantity




Is Discontinued By Manufacturer



‎1 Lithium Metal batteries required. (included)

Item model number


Part Number






Control Type


Control Method


Connectivity Protocol



‎24 Volts

Controller Type

‎IFTTT, Vera, Amazon Alexa, SmartThings, Homekit

Power Source


Item Weight

‎1.22 pounds



Item Dimensions LxWxH

‎4.05 x 4.05 x 0.84 inches

Warranty Description

‎3 years parts and labor.

User Reviews

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