Save up to 23%* on heating and cooling costs with ecobee3 lite, and place SmartSensor anywhere to extend comfort throughout your home. Feel at ease with door and window activity alerts.
What's included:
1 × SmartThermostat
Our base model thermostat, for enhanced comfort and energy savings.
1 × SmartSensor
Manage any cold or hot spots effortlessly.
1 × SmartSensor for doors and windows
Get alerted immediately about unexpected entries.
Works in harmony with leading smart home ecosystems including Apple HomeKit.
ecobee thermostats work seamlessly with Apple HomeKit on all iOS devices including Apple Watch, and other leading smart home ecosystems including the Google Assistant.
Alexa
Google Assistant
Apple HomeKit
If This Then That
Samsung SmartThings
ecobee3 lite Smart Thermostat
:
Live comfortably and save.
Well-priced and thoughtfully designed with the essential features to start saving you up to 23%* annually on heating and cooling costs. Connect it to included SmartSensor 2-pack for comfort in the rooms that matter most.
ENERGY STAR® approved.
Certified to meet the highest standards of home comfort and energy conservation.
Control from anywhere.
Adjust the temperature and turn on vacation mode anytime, anywhere.
Leave home with peace of mind.
Sends an alert if there is a disruption, like a sudden temperature drop that could lead to frozen or burst pipes.
Comfort, savings, and now, security.
When connected to SmartSensors, ecobee3 lite works with ecobee Smart Security home monitoring (subscription required) and other ecobee devices to automatically arm and disarm your home and notify you when guests arrive and leave.
Feel confident that your home is ready for ecobee3 lite smart thermostat.
SmartSensor works with ecobee thermostats for comfort and energy savings. Connect to SmartCamera and add ecobee Smart Security home monitoring (subscription required) for reassurance everywhere.
Energy savings and comfort in harmony.
Automatically adjusts the temperature for energy savings when you leave home and restores your comfort settings when you return.
Comfort that adapts.
Sets the temperature for comfort in rooms you use.
Peace of mind and control from anywhere.
Check the temperature in important rooms, like the nursery, using the app or your favorite voice assistant and adjust for comfort where it’s needed most.
Alerts deserving of your attention.
Place sensors around the home for advanced occupancy detection. Sensors send alerts when activity is detected when you’re away, not when you’re home.
SmartSensor for doors and windows
:
Peace of mind, no matter where you are.
Bring your home together with contact sensors that work with ecobee Smart Security home monitoring (subscription required) to send entry and occupancy alerts without obstructing family life.
Stay in-the-know
Receive alerts when doors, windows, or cabinets with SmartSensor are opened or closed.
Updates that paint a picture.
Get alerts when unexpected in-home activity is detected when you’re not there.
Features & Specs
:
Step into your comfort zone.
The ecobee home is a harmonious place where you can worry less and stay in the moment more. Our devices work in the background together to learn and adapt to your evolving needs for comfort that’s tailored to you.
Get comfortable with saving.
ecobee3 lite heats and cools more efficiently over time by factoring in weather patterns and HVAC system performance. Plus, monthly energy reports show how much you saved and how to save even more.
Notifications and reports
Home IQ
Get a monthly savings report and compare your results to other homes in the area. It’s like an energy audit at no extra cost.
Alerts & Reminders
The app notifies you of sudden temperature drops that could result in frozen or burst pipes and when the system needs maintenance.
Advanced thermostat capabilities
Smart Recovery
As ecobee3 lite gets to know your home’s heating and cooling patterns, it learns how long it takes to reach your desired temperature. If you routinely wake up at 6 a.m., Smart Recovery will start heating and cooling your home in advance so it’s comfortable when you wake up.
AC Overcool to Dehumidify
This feature will use your air conditioner to lower the indoor humidity to keep you cool and comfortable if you don’t have a dehumidifier.
Supports two-stage heating and cooling
ecobee thermostats are optimized for one or two-stage heating and cooling equipment. Staging control lets you get the level of comfort you like while lowering energy use.
Fan Dissipation
ecobee3 lite automatically runs the fan after a cycle to maximize heating, cooling, and dehumidification.
The right temperature in the right spaces with SmartSensor
SmartSensor (sold separately) unlocks the following additional features:
Smart Home & Away
Automatically adjusts the temperature for energy savings when you leave home and restores your comfort settings when you return.
Follow Me
Detects which rooms are in use and adjusts the temperature accordingly for comfort in those spaces.
Seamless setup
Compatible with most HVAC systems
ecobee thermostats work with radiant heating systems, multistage, and dual-fuel heat pumps. Use the Thermostat Compatibility Checker or reach out to our support team at 1-877-932-6233.
Industry-leading reliability
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. The included Power Extender Kit allows for installation in most homes without a C wire.
Dimensions
Thermostat
Length: 102.88 mm (4 in.)
Width: 102.88 mm (4 in.)
Depth: 21.4 mm (0.8 in.)
Trim plate
Height: 170 mm (6.7 in.)
Width: 170 mm (6.7 in.)
Depth: 6.25 mm (0.2 in.)
Color
Black front, white sides and back
Operating environment
Only install in a dry indoor location
Powering Methods
Wired 24VAC through terminals C and Rc.
Power Extender Kit enables you to reliably power your thermostat without having to run a fifth wire.
Wire Terminals
Rc
G
Y1
Y2
O/B
Rh
C
W1 (AUX1)
W2 (AUX2)
PEK
Thermostat sensors
Temperature
Humidity
Proximity
Connectivity
Wi-Fi, 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
Mounting
Screws
Bandwidth
15-20 MB/month
Power consumption
Less than 3.5 VA
Sustainability
Recycled packaging
Mercury-free
Arsenic-free
PVC-free
ROHS compliant
Storage
−31° to 113°F (−35° to 45°C)
5% to 95% RH (non-condensing)
Warranty
3-year warranty
What’s in the box
ecobee3 lite thermostat
ecobee3 lite backplate
Install guide
Wire labels
Drywall plugs
Screws
Power extender kit
Large trim plate
Dimensions
Thermostat
Length: 102.88 mm (4 in.)
Width: 102.88 mm (4 in.)
Depth: 21.4 mm (0.8 in.)
Trim plate
Height: 170 mm (6.7 in.)
Width: 170 mm (6.7 in.)
Depth: 6.25 mm (0.2 in.)
Color
Black front, white sides and back
Operating environment
Only install in a dry indoor location
Powering Methods
Wired 24VAC through terminals C and Rc.
Power Extender Kit enables you to reliably power your thermostat without having to run a fifth wire.
Wire Terminals
Rc
G
Y1
Y2
O/B
Rh
C
W1 (AUX1)
W2 (AUX2)
PEK
Thermostat sensors
Temperature
Humidity
Proximity
Connectivity
Wi-Fi, 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
Mounting
Screws
Bandwidth
15-20 MB/month
Power consumption
Less than 3.5 VA
Sustainability
Recycled packaging
Mercury-free
Arsenic-free
PVC-free
ROHS compliant
Storage
−31° to 113°F (−35° to 45°C)
5% to 95% RH (non-condensing)
Warranty
3-year warranty
What’s in the box
ecobee3 lite thermostat
ecobee3 lite backplate
Install guide
Wire labels
Drywall plugs
Screws
Power extender kit
Large trim plate
Heightened senses for enhanced comfort.
Smart features
Smart Home & Away
Automatically adjusts the temperature for energy savings when you leave home and restores your comfort settings when you return.
Follow Me
Detects which rooms are in use and adjusts the temperature accordingly for comfort in those spaces.
Notifications and reports
Alerts & Reminders
The app notifies you of sudden temperature drops that could result in frozen or burst pipes and when the system needs maintenance.
Home IQ
Home IQ shows you how much energy you’ve conserved each month compared to similar homes in your area and gives you valuable insights into your heating and cooling equipment. It’s like a home energy audit at no extra cost.
Your questions answered
Where should I place my sensors?
Place SmartSensors up to 60 feet from your smart thermostat in important rooms like bedrooms and nurseries, and areas with hot or cold spots.
How many sensors do I need?
Since every home is unique it really depends on your personal preference. ecobee thermostats can accommodate up to 32 sensors.
What about my pets?
Pets can wander freely around the SmartSensor and stay comfortable without affecting an occupancy reading.
Dimensions
Sensor
Height: 40 mm (1.6 in.)
Width: 40 mm (1.6 in.)
Depth: 26.4 mm (1.04 in.)
Sensor on stand
Height: 50 mm (2 in.)
Width: 40 mm (1.6 in.)
Depth: 26.4 mm (1.04 in.)
Color
White with brushed steel detachable stands
Operating environment
For indoor use only
Compatibility
Smart Thermostat Premium
Smart Thermostat Enhanced
SmartThermostat with voice control
ecobee4
ecobee3 lite
ecobee3
ecobee SmartCamera*
*To support ecobee home monitoring (subscription required)
Sensors
Temperature
Occupancy
Range & connectivity
Place sensors up to 60 ft from ecobee thermostat or camera.
915MHz radio
Occupancy sensor viewing angle & detection range
140° horizontal, 100° vertical
20 ft (6 m)
Powering method
CR2477 battery
Battery life
Up to 5 years
Mounting
Stands or adhesive wall-mounting brackets
Storage
−31° to 113°F (−35° to 45°C)
5% to 95% RH (non-condensing)
Warranty
3-year limited warranty
What’s in the box
1 sensor with detachable stand
1 adhesive wall-mounting bracket
Install guide
Batteries included
Dimensions
Sensor
Height: 40 mm (1.6 in.)
Width: 40 mm (1.6 in.)
Depth: 26.4 mm (1.04 in.)
Sensor on stand
Height: 50 mm (2 in.)
Width: 40 mm (1.6 in.)
Depth: 26.4 mm (1.04 in.)
Color
White with brushed steel detachable stands
Operating environment
For indoor use only
Compatibility
Smart Thermostat Premium
Smart Thermostat Enhanced
SmartThermostat with voice control
ecobee4
ecobee3 lite
ecobee3
ecobee SmartCamera*
*To support ecobee home monitoring (subscription required)
Sensors
Temperature
Occupancy
Range & connectivity
Place sensors up to 60 ft from ecobee thermostat or camera.
915MHz radio
Occupancy sensor viewing angle & detection range
140° horizontal, 100° vertical
20 ft (6 m)
Powering method
CR2477 battery
Battery life
Up to 5 years
Mounting
Stands or adhesive wall-mounting brackets
Storage
−31° to 113°F (−35° to 45°C)
5% to 95% RH (non-condensing)
Warranty
3-year limited warranty
What’s in the box
1 sensor with detachable stand
1 adhesive wall-mounting bracket
Install guide
Batteries included
Designed for everyday life.
Smart Notifications
Reassurance at home and away
With ecobee Smart Security, SmartSensor sends alerts and notifications when doors and windows are opened or closed and its motion and occupancy sensor alerts you to in-home activity detected when you’re away.
While you’re home, the contact sensor continues to monitor your entranceways, but the motion and occupancy sensor turns off to avoid sending unnecessary notifications.
Notifications that paint a picture
With ecobee Smart Security and SmartCamera, notifications or alerts are grouped using video and occupancy information, so you’ll always have context.
Automatic Monitoring
Ease of use meets peace of mind. ecobee Smart Security’s Automatic Monitoring feature uses family members’ and registered guests’ smartphone locations to arm and disarm the system automatically.
Dimensions
Sensor Base
Height: 60 mm (2.36 in.)
Width: 29 mm (1.14 in.)
Depth: 21 mm (0.8 in.)
Magnet
Height: 33 mm (1.3 in.)
Width: 16 mm (0.63 in.)
Depth: 12 mm (0.47 in.)
Operating environment
For indoor use only
Compatibility
SmartSensor works with the following devices to support ecobee home monitoring (subscription required):
SmartCamera with voice control
SmartThermostat with voice control
ecobee4
ecobee3 lite
ecobee3
Sensors
Occupancy sensor: detects motion when home is armed
Contact sensor: detects when doors and windows are opened and closed.
Range & connectivity
Place sensors up to 60 ft from ecobee thermostat or camera.
915MHz
Occupancy sensor angle & detection range
120° horizontal
16 ft (5 m) when placed at a height of 6.5 ft (2 m) on a door
Contact sensor detection range
0.75 to 1.25 in. (19 to 31.75 mm)
Powering method
CR2477 battery
Battery life
Up to 3 years
Mounting
Adhesive backing
Operating temperature & humidity
Temperature: 32° to 104°F (0° to 40°C)
Humidity: 5% to 95% RH (non-condensing)
Storage temperature & humidity
Temperature: −31° to 113°F (−35° to 45°C)
Humidity: 5% to 95% RH (non-condensing)
Warranty
3-year limited warranty
What’s in the box
2 occupancy and contact sensor bases with adhesive backs
2 magnets with adhesive backs
Batteries included
Quick-start guide
Dimensions
Sensor Base
Height: 60 mm (2.36 in.)
Width: 29 mm (1.14 in.)
Depth: 21 mm (0.8 in.)
Magnet
Height: 33 mm (1.3 in.)
Width: 16 mm (0.63 in.)
Depth: 12 mm (0.47 in.)
Operating environment
For indoor use only
Compatibility
SmartSensor works with the following devices to support ecobee home monitoring (subscription required):
SmartCamera with voice control
SmartThermostat with voice control
ecobee4
ecobee3 lite
ecobee3
Sensors
Occupancy sensor: detects motion when home is armed
Contact sensor: detects when doors and windows are opened and closed.
Range & connectivity
Place sensors up to 60 ft from ecobee thermostat or camera.
915MHz
Occupancy sensor angle & detection range
120° horizontal
16 ft (5 m) when placed at a height of 6.5 ft (2 m) on a door
Contact sensor detection range
0.75 to 1.25 in. (19 to 31.75 mm)
Powering method
CR2477 battery
Battery life
Up to 3 years
Mounting
Adhesive backing
Operating temperature & humidity
Temperature: 32° to 104°F (0° to 40°C)
Humidity: 5% to 95% RH (non-condensing)
Storage temperature & humidity
Temperature: −31° to 113°F (−35° to 45°C)
Humidity: 5% to 95% RH (non-condensing)
Warranty
3-year limited warranty
What’s in the box
2 occupancy and contact sensor bases with adhesive backs
2 magnets with adhesive backs
Batteries included
Quick-start guide
Gallery
:
The difference is in the details.
Install with confidence on your own or with our help.
Everything you need to install your smart thermostat, besides basic tools, is in the box and installation should take about 45 minutes. If you need assistance, our helpful support team is always just a phone call away. Or hire a local professional to install it for you.
