How to install ecobee3 lite.
In most homes, installing an ecobee thermostat is an easy process that takes about 45 minutes. Follow the steps below or scroll down for installation guides and videos, wiring diagrams, troubleshooting tips and more.
- Check compatibility with your heating (and cooling) system
- Download the ecobee app to install your thermostat
Install with a C wire
Install without a C wire
Guides and manuals
Getting started with your ecobee3 lite
Not the DIY type?
Hire a professional installer to get your ecobee device up and running quickly.
Brendon Aldridge, owner & technician
Troubleshooting:If your ecobee doesn’t turn on, please try these steps.
:If your ecobee doesn’t turn on, please try these steps.
Check your wire and terminal connection
Check your HVAC cover panel
Ensure your R wire is inserted into the proper terminal
Ensure your wire and terminal connections in the Power Extender Kit are secure
Here's what you'll find in the box.
Power extender kit (PEK)
- Screws and drywall plugs
- Wire labels
- Installation guide
Tools you'll need:
Drill (3/16” drill bit)