The smart choice for a balance of comfort, value, and energy savings.
The smart choice for a balance of comfort, value, and energy savings.
Overview
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Designed for Smarter Savings and Control.
Equipped with the essential features to start saving you up to 23%* annually on heating and cooling. Connect to SmartSensor (sold separately) for better comfort in the rooms that matter most.
ENERGY STAR® certified
Save up to 23%* on annual energy costs
Control from anywhere on iOS and Android
Apple HomeKit + more integrations
Compatible with SmartSensor
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 leading smart home ecosystems including the Google Assistant.
Alexa
Apple HomeKit
Google Assistant
Samsung SmartThings
If This Then That
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.
Works with SmartSensor for enhanced comfort.
SmartSensor keeps you comfortable where you are, not just where your thermostat is. Simply place SmartSensor in the bedroom, office, or child’s room for total comfort and control.
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
Gallery
:
Thoughtfully designed for everyday life.
The display lights up when you’re nearby so you can check the weather and the five‑day forecast.
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.
"A responsive touchscreen and integrations with Amazon Alexa, Apple HomeKit, Samsung SmartThings, Wink and IFTTT give the lower-priced $169 ecobee3 Lite Smart Thermostat serious appeal."
"The ecobee3 Lite is easily the most appealing basic 7-day programmable thermostat on the market, one I can comfortably recommend."
"If you’re a fan of the ecobee4 over the Nest Thermostat, but are on a budget, the ecobee3 lite is a good alternative to the company’s flagship model."
"A responsive touchscreen and integrations with Amazon Alexa, Apple HomeKit, Samsung SmartThings, Wink and IFTTT give the lower-priced $169 ecobee3 Lite Smart Thermostat serious appeal."
"The ecobee3 Lite is easily the most appealing basic 7-day programmable thermostat on the market, one I can comfortably recommend."
"If you’re a fan of the ecobee4 over the Nest Thermostat, but are on a budget, the ecobee3 lite is a good alternative to the company’s flagship model."
"A responsive touchscreen and integrations with Amazon Alexa, Apple HomeKit, Samsung SmartThings, Wink and IFTTT give the lower-priced $169 ecobee3 Lite Smart Thermostat serious appeal."
Purchase with peace of mind
Return it for free within 30 days for a full refund.
Free shipping
Receive it in 2 to 3 business days.
Warranties without worry
ecobee devices are covered by a 3-year limited warranty.
Clarity when you need it
Our helpful support team is only a call away.
* Compared to a hold of 72°F/22°C.
1 Where applicable.
† Based on a study conducted by a third-party expert during summer 2020 across the US and Canada, in jurisdictions where time-of-use pricing is in effect, ecobee smart thermostat owners with the eco+ Time of Use feature enabled saved up to 23% on the HVAC portion of their electricity bill. Savings vary by season, climate zone, and rate structure.
