Deliver comfort to the rooms that matter most
Most thermostats read the temperature in one place (usually the hallway) which can make other rooms uncomfortable. ecobee3 uses room sensors to deliver the preferred temperature to the rooms that matter. Simple.
A complete comfort system for your home.
Effortless control at your fingertips.
Supports your connected home to make life simpler.
Engineered for energy savings. Designed for you.
ecobee is hardwired so you'll never be left out in the cold.
Being hardwired means your thermostat isn’t relying on a battery or your HVAC equipment to charge itself (aka “power-stealing”). A little bit extra, for no extra.
Getting started is simple
Will it work with my home?
Yes, we are compatible with 95% of heating and cooling systems.
Can I install it myself?
You bet. Use our step-by-step guide or call our friendly support team.
Can I get it professionally installed?
Yes, we can help connect you with certified pro installers in your area.
You have better things to do than teach your thermostat.
ecobee thermostats use local weather to understand your home’s unique energy profile and transforms thousands of data points into cost savings.
3.5” full-color LCD touch screen
320 x 480 pixel display
Length: 3.93 in
Width: 3.93 in
Depth: 0.86 in
Length: 1.73 in
With stand: 2.12 in
Width: 1.73 in
Depth: 0.78 in
Power Extender Kit*
Length: 2.44 in
Width: 2.36 in
Depth: 0.84 in
*Optional for installation
Gas, oil, electric, dual fuel
Heat Pump (4H/2C)
Dual fuel support
Humidifier, Dehumidifier, Ventilator, HRV or ERV
W1 (AUX 1)
W2 (AUX 2)
Connectivity & Security
Wi-Fi, 915MHz, future expansion slot
802.11 b/g/n @ 2.4 GHZ
WEP 64, WEP 128, WPA and WPA2 encryption methods
DHCP (dynamic) or static IP addressing
168 bit SSL encryption
less than 3.5 VA
Apple HomeKit Enabled
Controlling this HomeKit-enabled accessory requires an iPhone, iPad, or iPod touch with iOS 9 or later.
Wired 24 VAC through terminals C and Rc or Rh. Power Extender Kit (included) enables you to reliably power your thermostat without having to run a C wire.
Desired Temperature: 44° to 92°F
Display: 41° to 98°F
Sensitivity: +/- 0.9°F
Operating: 32° to 131°F
Display: 20% to 90% RH
Sensitivity: +/- 5% RH
Operating: 5% to 95% RH (non condensing)
-31° to 113°F
5% to 95% RH (non condensing)
In the Box
Standard and large trim plates
Room sensor with detachable stand
Quick start guide
Screws and drywall plugs
Power Extender Kit
What customers are saying.
2020 Amazon Reviews, 4.5 out of 5 stars
I'm a new homeowner and not yet secure in my DIY skills so I asked my brother-in-law to help me install it, but in truth I could have done it myself! I specifically purchased Ecobee to work with our Amazon Echo and so my husband who has MD can control the temperature and it is perfect!akoWonderWoman on August 31, 2016
I love my Ecobee3! We are renters, so this was a big undertaking for us to replace the thermostat that came with our apartment with a digital thermostat. But our air conditioning bills were getting crazy, our thermostat was very unreliable (it would randomly go up to 85 degrees in the middle of the night or other times for no reason), and we wanted to be able to control it from outside the home. We briefly considered The Nest, which has some great rebates from our power company. But after poring over reviews, we decided to go with the Ecobee, mainly because it was Home Kit compatible, and we may want to use that in the future since we have an Apple home network and Apple TV.Amoki on August 30, 2016
Product is great (and arrived fast). We needed our baby's room to have a sensor as it is always hotter in the summer and colder in the winter, as it was a guessing game with the original thermostat downstairs. After having 2 professional HVAC people come over and telling us there's nothing we can do with the ducts to improve the situation, we compromised for a smart thermostat to at least eliminate the guessing game (I would still want to change our HVAC configuration, but that's a 10k job).Bootvi on August 29, 2016
I'm in love with my ecobee. Upgraded from an old non-programmable Honeywell thermostat. So far, my HVAC seems to run MUCH less than with the old thermostat. I love the programmable schedules, and the sensor modules. I also installed the unit myself using the Power Extender Kit, and it was super easy. Really looking forward to lower energy consumption (and costs!) with this thermostat.BigIrishApe on August 25, 2016
Better than Nest in that it has discrete external sensors to focus on rooms you care about the most. Easy to program schedule. Set up was overall pretty easy. Love that I can control the temperature on my cellphone. Similar to Nest, it is a good-looking modern product but with (in my opnion) a more pleasant display and touchscreen.Jacquelyn M. Means on August 24, 2016
The functionality and ease of use of this device is amazing. I'm already seeing the energy savings. The sensor system is simply brilliant and the fact that they have motion detectors is amazing. The app is very easy to use and a breeze to setup with apple home. I will be purchasing additional sensors to make it even more smarter around my house. There is a lot of technology here, which is the main reason I choose this over the Nest and also a 3 year warranty.Y. Acosta on August 24, 2016
I really believe this is the best thermostat on the market. You can place multiple external sensors around the house so that the Ecobee3 (E3) knows that the temperature is in different parts of the house. Since the E3 knows both the temperature in other parts of the house AND if someone is present, it can dynamically "care" about the temperature only in rooms that have recently seen occupancy!Ken S on July 16, 2016