Ecobee4 Wiring Diagram

Ecobee4 is a smart thermostat with built-in Alexa voice control. It has a sleek design and many features that make it a popular choice for homeowners. In this article, we will discuss the wiring diagram for Ecobee4 and how to install it in your home. We’ll also answer some frequently asked questions about Ecobee4.

Wiring Diagram

The Ecobee4 wiring diagram is fairly simple, and most homeowners can install it themselves. However, if you’re uncomfortable with electrical wiring, it’s always best to hire a licensed electrician. Before you start, make sure you have the following tools:

  • Drill
  • Wire stripper
  • Screwdriver
  • Pliers
  • Level

Here is the Ecobee4 wiring diagram:

Terminal Description Wire Color
Rc 24VAC power for cooling Red
Rh 24VAC power for heating Red
C Common wire Blue
Y1 Cooling stage 1 compressor Yellow
Y/Y2 Cooling stage 2 compressor Orange
G Fan relay Green
W1 Heating stage 1 White
W2 Heating stage 2 Black
L Dehumidifier relay Brown
O/B Reversing valve Orange

How to Install Ecobee4

Before you begin the installation process, make sure you turn off the power to your HVAC system at the breaker box. Then follow these steps:

  1. Remove the old thermostat
  2. Disconnect the wires from the old thermostat
  3. Install the Ecobee4 base plate
  4. Connect the wires to the Ecobee4 according to the wiring diagram above
  5. Attach the Ecobee4 display to the base plate
  6. Power on the HVAC system and follow the on-screen instructions on the Ecobee4 display to complete the setup process

FAQ

What does the common wire do?

The common wire provides a return path for the 24VAC power supply. It’s important to have a common wire connected to your HVAC system to ensure proper operation of your Ecobee4 thermostat.

Do I need a C wire for Ecobee4?

It’s recommended to have a C wire connected to your Ecobee4 thermostat, but it’s not always necessary. If you don’t have a C wire, you can use the Power Extender Kit (PEK) that comes with your Ecobee4 to provide power to the thermostat.

What is the PEK?

The Power Extender Kit (PEK) is a device that connects to your HVAC system and provides power to your Ecobee4 if you don’t have a C wire. It’s a simple installation process and comes with your Ecobee4 thermostat.

Can I install Ecobee4 myself?

Yes, most homeowners can install Ecobee4 themselves. However, if you’re uncomfortable with electrical wiring, it’s always best to hire a licensed electrician to do the installation for you.

What are the benefits of Ecobee4?

Ecobee4 has many benefits, including:

  • Built-in Alexa voice control
  • Smart integrations with other home automation devices
  • Energy-saving features to help lower your utility bills
  • Easy-to-use interface with a large touchscreen display