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ecobee3 Lite


Beginner’s Guide to the ecobee3 Lite Thermostat

ecobe3 Lite Thermostat


This guide covers all you need to know about the ecobee3 Lite Thermostat:

  • How to install an ecobee thermostat (HVAC compatibility, C-wire info, and detailed instructions)
  • How to use it (Basic controls, how to change settings, and how to control it using the app)
  • How to improve energy savings with ecobee (Info on ecobee's energy saving modes and features)
  • Troubleshooting tips (Solutions for the most common issues)



Getting Started - How to Set Up Your New ecobee Thermostat


Congrats, you have purchased a new ecobee3 Lite Thermostat! Now what? The good news is, ecobees are simple to set up, and these tips and videos make it even easier.

First and Foremost, is it Compatible with Your HVAC System?

ecobee thermostats work with radiant heating systems, multistage, and dual-fuel heat pumps. If you didn’t check compatibility prior to purchasing your new ecobee thermostat, don’t open the box just yet.

Use the ecobee compatibility checker here.

Good to Go? Let’s Set Up Your New ecobee!

Everything you need to install your smart thermostat, besides basic tools, is in the box. Installation should take about 45 minutes.

What's in ecobee3 Lite thermostat packaging


To get started, just download the ecobee app.
It will guide you step-by-step through installation and setup, complete with diagrams, photos, and videos to help you along the way. Get a preview of what to expect in this video.



Does an ecobee Require a C-Wire?

ecobee thermostats are powered by a dedicated 24VAC power supply using a Common wire (or C-wire) for consistent performance, even in the coldest weather. If you don't have a C-wire, a Power Extender Kit (included in the package) allows for installation in most homes without a C-wire.

Need Some Installation Info?

For detailed installation information, consult the following guides or video series below.

Helpful Guides:

Getting Started: Installing Your ecobee3 Thermostat
Step-by-Step ecobee3 Installation Guide
Installing your ecobee thermostat with the Power Extender Kit (no C-wire)

ecobee3 Lite Installation Video Series

1 - Removing Your Old Thermostat

2A - Installing Your ecobee3

2B - No C-Wire? Installing Your ecobee3 with the Power Extender Kit

3 - Setting up and Connecting Your ecobee3


How to Use Your ecobee


ecobee thermostats understand your home's unique energy profile and the weather outside, making sure you're comfortable and energy-efficient at all times. Below is some info on ecobee's handy features. Learn more about them, how to use them, and how to maximize savings.

ecobee's Basic Controls

The bright, easy-to-read touchscreen on your ecobee3 thermostat makes it simple to review and adjust settings anytime you want.

  • Touch items to select or activate them. For menus with a >, this will expand the menu to display additional options or submenus
  • Swipe up and down to display additional information. Swiping on a temperature bar will also adjust the settings up or down.
  • Swipe left and right to scroll horizontal lists that contain multiple items to choose from.
  • To exit a submenu, touch <. To close the main menu, touch .

ecobee basic interface

How to Program and Adjust Your ecobee

How to Program your ecobee
You can program the schedule on your ecobee either on the thermostat itself, through the mobile app, or through the Web Portal. The guide below provides step-by-step instructions for doing so.

How to Program the ecobee3 Lite Thermostat 

How to Adjust the Temperature on your ecobee
ecobee is motion-sensitive and will turn on when you walk by it. You can override the scheduled temperature by moving the bubble on the temperature slider up or down.

The blue number represents the cool set point; the orange number represents the heat set point. The new desired temperature will be the set point used for the Hold. The duration of the Hold is the last configured value. You can adjust the default Hold time in the Preferences menu.

To cancel the current Hold, touch the Hold message box displayed on the Home screen. You can touch the box anywhere and not just the X displayed on the box.

For detailed information on programming and adjusting your ecobee3 manually or using the app, visit the ecobee Thermostat Resource Guide.

Check out this video to see the intuitive ecobee in action.




How to Improve Energy Savings with ecobee


Every home consumes energy differently. That’s why ecobee created eco+, a suite of smart features that helps you save on energy by improving your home's energy efficiency, while enhancing your comfort. It supercharges your ecobee thermostat and delivers personalized energy recommendations by looking at things like local weather, home occupancy, and variable electricity rates to shift your home's energy usage accordingly. Here'a a quick snapshot of how eco+ works to save you energy and money.

Energy reports
Once you set up eco+, you will start receiving emails on a monthly basis detailing your energy consumption for the previous month. The emails include how long your system has run for during the last month, the amount of energy savings your ecobee smart thermostat has generated, and how your savings compare with your community.

Feels Like Feature
With Feels Like, eco+ uses both humidity and temperature readings to calculate your home's temperature. In so doing, Feels Like ensures that the temperature you see on the thermostat is the temperature you actually experience. This helps to keep you comfortable when it’s humid and lower your energy bill when it’s dry. 

Time of Use Feature
If your electricity rate varies based on the time of day, Time of Use can save you money by intelligently precooling or preheating your home when electricity is less expensive to keep you comfortable, while cooling or heating less when electricity is more costly. By shifting energy usage to times of day when electricity is cheaper and cleaner, Time of Use is having a positive impact on communities and the environment.

Smart Home & Away
Smart Home & Away automatically adjusting the temperature for energy savings when it detects you're not home, and quickly restores your comfort settings when you come back. Now a part of eco+, Smart Home & Away detects when you’re away faster than before, making your home more efficient.

Learn more about eco+



Troubleshooting Tips


If you run into any issues while setting up or using your ecobee, consult the troubleshooting guide below. It covers the most common issues you may encounter.

ecobee Thermostat Troubleshooting Guide