Emerson - Sensi Lite Smart Programmable Wi-Fi Thermostat-Works with Alexa - Black - ST25 - 786710568732
Smart thermostats have never been so easy! Give your family’s comfort a smart upgrade. With the Sensi Lite smart thermostat, it’s never been easier. It all starts with a quick and simple installation—no common wire required with most systems. Our top-rated mobile app lets you manage your home’s HVAC from anywhere, anytime. Plus, your usage activity and personal data stays private. That’s the power of putting Sensi’s over 100 years of HVAC experience on your wall.
Smart thermostats have never been so easy! Give your family’s comfort a smart upgrade. With the Sensi Lite smart thermostat, it’s never been easier. It all starts with a quick and simple installation—no common wire required with most systems. Our top-rated mobile app lets you manage your home’s HVAC from anywhere, anytime. Plus, your usage activity and personal data stays private. That’s the power of putting Sensi’s over 100 years of HVAC experience on your wall.
Smart thermostats have never been so easy! Give your family’s comfort a smart upgrade. With the Sensi Lite smart thermostat, it’s never been easier. It all starts with a quick and simple installation—no common wire required with most systems. Our top-rated mobile app lets you manage your home’s HVAC from anywhere, anytime. Plus, your usage activity and personal data stays private. That’s the power of putting Sensi’s over 100 years of HVAC experience on your wall.
Smart thermostats have never been so easy! Give your family’s comfort a smart upgrade. With the Sensi Lite smart thermostat, it’s never been easier. It all starts with a quick and simple installation—no common wire required with most systems. Our top-rated mobile app lets you manage your home’s HVAC from anywhere, anytime. Plus, your usage activity and personal data stays private. That’s the power of putting Sensi’s over 100 years of HVAC experience on your wall.
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The lowest price for Emerson - Sensi Lite Smart Programmable Wi-Fi Thermostat-Works with Alexa - Black - ST25 - 786710568732 right now is $45.41 at eBay.com.au, compared across 13 retailers.
The all-time low was $43.93 on 13 May 2026 — today's price is 3% above the lowest ever. This is at or near its all-time low — a good time to buy.
Prices last updated 9 June 2026.
Last updated at 09/06/2026 22:19:59
Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sensi St25 Lite Touch Smart Programmable Thermostat
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Lite Smart Thermostat, Programmable, Wifi, Easy Diy, Works With Alexa,
Delivery $328.75
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Copeland - Sensi Lite Smart Programmable Wi-Fi Thermostat-Works with Alexa - Black - ST25
Delivery $100.07
Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR
Delivery between 14–18 June $13.24
Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR Certified, ST25, Most Systems C-Wire Not Required, C-Wire needed wi
Delivery between 16–19 June $29
Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not Require
Delivery between 16–19 June $29
Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR
Delivery between 15–19 June $8.53
Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR
Delivery between 14–18 June $14.00
Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR
Delivery between 15–19 June $14.81
originally posted on bestbuy.com
The Emerson Sensi Lite Smart Thermostat is a reliable and user-friendly device that brings convenience and energy efficiency to your home heating and cooling system. With its sleek design and intuitive interface, it is an excellent addition to any modern smart home.Installation of the Sensi Lite is straightforward and doesn't require professional assistance. The thermostat is compatible with most heating and cooling systems, including gas, oil, electric, and heat pump systems, making it a versatile choice for a wide range of households. The included step-by-step installation guide and compatibility checker provide helpful assistance during the setup process.Once installed, connecting the Sensi Lite to your home's Wi-Fi network is a breeze. The Sensi mobile app, ... MoreThe Emerson Sensi Lite Smart Thermostat is a reliable and user-friendly device that brings convenience and energy efficiency to your home heating and cooling system. With its sleek design and intuitive interface, it is an excellent addition to any modern smart home.Installation of the Sensi Lite is straightforward and doesn't require professional assistance. The thermostat is compatible with most heating and cooling systems, including gas, oil, electric, and heat pump systems, making it a versatile choice for a wide range of households. The included step-by-step installation guide and compatibility checker provide helpful assistance during the setup process.Once installed, connecting the Sensi Lite to your home's Wi-Fi network is a breeze. The Sensi mobile app, available for both iOS and Android devices, allows you to control and monitor your thermostat remotely. Whether you're at work or on vacation, you can easily adjust the temperature, set schedules, and track energy usage from anywhere using your smartphone or tablet.The Sensi Lite's interface is intuitive and user-friendly. The backlit display provides clear visibility, even in low-light conditions, and the touch-sensitive buttons make it easy to navigate through the settings. The on-screen prompts guide you through the programming process, ensuring you can quickly customize your temperature settings and schedules to suit your lifestyle.One of the standout features of the Sensi Lite is its energy-saving capabilities. The thermostat offers flexible scheduling options, allowing you to set different temperature profiles for various times of the day. This feature enables you to optimize your HVAC system's operation and reduce energy consumption when you're away from home, ultimately saving you money on your utility bills. Additionally, the Sensi Lite provides energy usage reports, giving you insights into your heating and cooling patterns and helping you make informed decisions about your energy consumption.Another notable feature is the compatibility with voice control systems like Amazon Alexa, Google Assistant, and Apple HomeKit. You can effortlessly adjust the temperature by simply using voice commands, adding an extra layer of convenience to your smart home setup.While the Sensi Lite offers a solid performance overall, it lacks some of the advanced features found in higher-end smart thermostats. For instance, it doesn't include features like geofencing or learning algorithms that adapt to your behavior over time. However, considering its affordable price point, it delivers an excellent value for its functionality.In conclusion, the Emerson Sensi Lite Smart Thermostat is a reliable and cost-effective choice for those looking to upgrade their home's HVAC control to a smart system. Its easy installation, intuitive interface, remote control capabilities, and energy-saving features make it a practical and user-friendly option. Whether you're a tech-savvy homeowner or just starting to explore the world of smart home devices, the Sensi Lite is a solid choice that won't disappoint.
originally posted on bestbuy.com
As a homeowner seeking convenience and efficiency, I recently upgraded to the Sensi Lite Smart Thermostat, and I must say, it has been a game-changer for my home's temperature control. Let me share my personal experience and observations with this remarkable device.First and foremost, the simplicity of the interface is a standout feature. With just three buttons, adjusting the temperature and selecting the mode couldn't be easier. The intuitive design allows for effortless control: temperature up and down buttons, and a mode button that toggles between heating (fire symbol), cooling (snowflake symbol), and off. What's even better is that the Sensi Lite Smart Thermostat doesn't require a common wire on some installations, thanks to its energy-efficient ... MoreAs a homeowner seeking convenience and efficiency, I recently upgraded to the Sensi Lite Smart Thermostat, and I must say, it has been a game-changer for my home's temperature control. Let me share my personal experience and observations with this remarkable device.First and foremost, the simplicity of the interface is a standout feature. With just three buttons, adjusting the temperature and selecting the mode couldn't be easier. The intuitive design allows for effortless control: temperature up and down buttons, and a mode button that toggles between heating (fire symbol), cooling (snowflake symbol), and off. What's even better is that the Sensi Lite Smart Thermostat doesn't require a common wire on some installations, thanks to its energy-efficient design.Speaking of energy efficiency, the fact that this thermostat operates on two AAA batteries is remarkable. These batteries can last a year or more, providing long-lasting performance without the hassle of constant replacements. Additionally, the display has a timeout feature that lowers the brightness when not in use, saving power. But don't worry, as soon as you touch any control, the display wakes up and shows bright again.The modes displayed to the right of the numbers make it easy to identify the current setting at a glance. The fire symbol represents heating, the snowflake denotes cooling, and the off mode turns everything off. You'll also find a Wi-Fi symbol, indicating that the thermostat is successfully connected to your network.Now, let's talk about the accompanying mobile app, which has truly impressed me. It not only allows you to control the thermostat from anywhere using your phone, but it also provides valuable information. The app displays your location and the outside temperature, enabling you to make more informed decisions when setting the temperature inside your home. What's particularly noteworthy is the near-instant synchronization between the app and the physical thermostat. Adjusting the temperature on your phone reflects the change almost immediately on the device itself, ensuring a seamless user experience.Furthermore, the app offers convenient features such as adjusting the fan modes between auto, always on, and timed air circulation. This level of customization allows you to tailor your home's airflow to your preferences. Setting up a heating and cooling schedule is a breeze with the app, eliminating the need to constantly monitor and adjust the temperature manually. The scheduling feature allows you to program different settings based on time and day, providing unparalleled convenience and comfort.To ensure compatibility and a successful installation, it is advisable to check if your HVAC system is compatible with the Sensi Lite Smart Thermostat. However, if you encounter any questions or concerns, their tech support line, conveniently listed in the instructions, is readily available to assist you.Finally, let's talk about the icing on the cake: voice assistant integration. As a first-time smart thermostat user, I was amazed at the compatibility with voice assistants like Alexa. Being able to simply say, "Alexa, set my heat to 68," and having the thermostat respond accordingly is a truly remarkable experience. The ability to control the temperature using voice commands adds a new level of convenience to my daily routine.In conclusion, the Sensi Lite Smart Thermostat has transformed the way I manage my home's temperature. Its user-friendly interface, long-lasting battery life, seamless app integration, and voice assistant compatibility have made it an indispensable part of my household. If you're looking to simplify and optimize your comfort while reducing energy consumption, I highly recommend giving the Sensi Lite Smart Thermostat a try. It's an investment that pays off in both convenience and peace of mind.
originally posted on bestbuy.com
I have an older wifi thermostat that has worked well, but it's very dated and the control panel is worn out, so when I found this Sensi model, I decided to give it a try. At first I was going to have my HVAC tech install it, but he has been so busy, I gave up and decided to tackle the job myself. The first thing I noticed is that there is very little documentation with the unit. There is a very small "overview" manual which is really more like marketing literature than an operations manual, and there was no installation manual. I finally found the manual on the Emerson website.Installation was not difficult, but the first thing I discovered is that the thermostat will not work properly until it has been added to the app and setup there. I downloaded the app on my ... MoreI have an older wifi thermostat that has worked well, but it's very dated and the control panel is worn out, so when I found this Sensi model, I decided to give it a try. At first I was going to have my HVAC tech install it, but he has been so busy, I gave up and decided to tackle the job myself. The first thing I noticed is that there is very little documentation with the unit. There is a very small "overview" manual which is really more like marketing literature than an operations manual, and there was no installation manual. I finally found the manual on the Emerson website.Installation was not difficult, but the first thing I discovered is that the thermostat will not work properly until it has been added to the app and setup there. I downloaded the app on my phone which prompted me to create and account, which I did. And here's where I have to give this a 4-star instead of a 5-star rating. Creating an account requires both an email address and a phone number. I can understand the email address as it is used for the account login, but why I must give them my phone number makes no sense.Anyhow, after setting up the account and scanning the thermostat's QR code to add it to the app, I had it working. The app interface is clean and simple to use. It's responsive and I like the features it has like the filter/maintenance reminders. Overall, I like this thermostat. It looks good and works well. I do recommend it.
| Controller type | Hand Control |
| Product dimensions | 2.24 x 12.88 x 7.95 cm; 136.08 Grams |
| Batteries | 2 AAA batteries required. (included) |
| Style | Simple |
| Shape | Rectangular |
Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sensi St25 Lite Touch Smart Programmable Thermostat
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Lite Smart Thermostat, Programmable, Wifi, Easy Diy, Works With Alexa,
Delivery $328.75
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Copeland - Sensi Lite Smart Programmable Wi-Fi Thermostat-Works with Alexa - Black - ST25
Delivery $100.07
Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR
Delivery between 14–18 June $13.24
The Emerson Sensi Lite Smart Thermostat is a reliable and user-friendly device that brings convenience and energy efficiency to your home heating and cooling system. With its sleek design and intuitive interface, it is an excellent addition to any modern smart home.Installation of the Sensi Lite is straightforward and doesn't require professional assistance. The thermostat is compatible with most heating and cooling systems, including gas, oil, electric, and heat pump systems, making it a versatile choice for a wide range of households. The included step-by-step installation guide and compatibility checker provide helpful assistance during the setup process.Once installed, connecting the Sensi Lite to your home's Wi-Fi network is a breeze. The Sensi mobile app, ... MoreThe Emerson Sensi Lite Smart Thermostat is a reliable and user-friendly device that brings convenience and energy efficiency to your home heating and cooling system. With its sleek design and intuitive interface, it is an excellent addition to any modern smart home.Installation of the Sensi Lite is straightforward and doesn't require professional assistance. The thermostat is compatible with most heating and cooling systems, including gas, oil, electric, and heat pump systems, making it a versatile choice for a wide range of households. The included step-by-step installation guide and compatibility checker provide helpful assistance during the setup process.Once installed, connecting the Sensi Lite to your home's Wi-Fi network is a breeze. The Sensi mobile app, available for both iOS and Android devices, allows you to control and monitor your thermostat remotely. Whether you're at work or on vacation, you can easily adjust the temperature, set schedules, and track energy usage from anywhere using your smartphone or tablet.The Sensi Lite's interface is intuitive and user-friendly. The backlit display provides clear visibility, even in low-light conditions, and the touch-sensitive buttons make it easy to navigate through the settings. The on-screen prompts guide you through the programming process, ensuring you can quickly customize your temperature settings and schedules to suit your lifestyle.One of the standout features of the Sensi Lite is its energy-saving capabilities. The thermostat offers flexible scheduling options, allowing you to set different temperature profiles for various times of the day. This feature enables you to optimize your HVAC system's operation and reduce energy consumption when you're away from home, ultimately saving you money on your utility bills. Additionally, the Sensi Lite provides energy usage reports, giving you insights into your heating and cooling patterns and helping you make informed decisions about your energy consumption.Another notable feature is the compatibility with voice control systems like Amazon Alexa, Google Assistant, and Apple HomeKit. You can effortlessly adjust the temperature by simply using voice commands, adding an extra layer of convenience to your smart home setup.While the Sensi Lite offers a solid performance overall, it lacks some of the advanced features found in higher-end smart thermostats. For instance, it doesn't include features like geofencing or learning algorithms that adapt to your behavior over time. However, considering its affordable price point, it delivers an excellent value for its functionality.In conclusion, the Emerson Sensi Lite Smart Thermostat is a reliable and cost-effective choice for those looking to upgrade their home's HVAC control to a smart system. Its easy installation, intuitive interface, remote control capabilities, and energy-saving features make it a practical and user-friendly option. Whether you're a tech-savvy homeowner or just starting to explore the world of smart home devices, the Sensi Lite is a solid choice that won't disappoint.
As a homeowner seeking convenience and efficiency, I recently upgraded to the Sensi Lite Smart Thermostat, and I must say, it has been a game-changer for my home's temperature control. Let me share my personal experience and observations with this remarkable device.First and foremost, the simplicity of the interface is a standout feature. With just three buttons, adjusting the temperature and selecting the mode couldn't be easier. The intuitive design allows for effortless control: temperature up and down buttons, and a mode button that toggles between heating (fire symbol), cooling (snowflake symbol), and off. What's even better is that the Sensi Lite Smart Thermostat doesn't require a common wire on some installations, thanks to its energy-efficient ... MoreAs a homeowner seeking convenience and efficiency, I recently upgraded to the Sensi Lite Smart Thermostat, and I must say, it has been a game-changer for my home's temperature control. Let me share my personal experience and observations with this remarkable device.First and foremost, the simplicity of the interface is a standout feature. With just three buttons, adjusting the temperature and selecting the mode couldn't be easier. The intuitive design allows for effortless control: temperature up and down buttons, and a mode button that toggles between heating (fire symbol), cooling (snowflake symbol), and off. What's even better is that the Sensi Lite Smart Thermostat doesn't require a common wire on some installations, thanks to its energy-efficient design.Speaking of energy efficiency, the fact that this thermostat operates on two AAA batteries is remarkable. These batteries can last a year or more, providing long-lasting performance without the hassle of constant replacements. Additionally, the display has a timeout feature that lowers the brightness when not in use, saving power. But don't worry, as soon as you touch any control, the display wakes up and shows bright again.The modes displayed to the right of the numbers make it easy to identify the current setting at a glance. The fire symbol represents heating, the snowflake denotes cooling, and the off mode turns everything off. You'll also find a Wi-Fi symbol, indicating that the thermostat is successfully connected to your network.Now, let's talk about the accompanying mobile app, which has truly impressed me. It not only allows you to control the thermostat from anywhere using your phone, but it also provides valuable information. The app displays your location and the outside temperature, enabling you to make more informed decisions when setting the temperature inside your home. What's particularly noteworthy is the near-instant synchronization between the app and the physical thermostat. Adjusting the temperature on your phone reflects the change almost immediately on the device itself, ensuring a seamless user experience.Furthermore, the app offers convenient features such as adjusting the fan modes between auto, always on, and timed air circulation. This level of customization allows you to tailor your home's airflow to your preferences. Setting up a heating and cooling schedule is a breeze with the app, eliminating the need to constantly monitor and adjust the temperature manually. The scheduling feature allows you to program different settings based on time and day, providing unparalleled convenience and comfort.To ensure compatibility and a successful installation, it is advisable to check if your HVAC system is compatible with the Sensi Lite Smart Thermostat. However, if you encounter any questions or concerns, their tech support line, conveniently listed in the instructions, is readily available to assist you.Finally, let's talk about the icing on the cake: voice assistant integration. As a first-time smart thermostat user, I was amazed at the compatibility with voice assistants like Alexa. Being able to simply say, "Alexa, set my heat to 68," and having the thermostat respond accordingly is a truly remarkable experience. The ability to control the temperature using voice commands adds a new level of convenience to my daily routine.In conclusion, the Sensi Lite Smart Thermostat has transformed the way I manage my home's temperature. Its user-friendly interface, long-lasting battery life, seamless app integration, and voice assistant compatibility have made it an indispensable part of my household. If you're looking to simplify and optimize your comfort while reducing energy consumption, I highly recommend giving the Sensi Lite Smart Thermostat a try. It's an investment that pays off in both convenience and peace of mind.
I have an older wifi thermostat that has worked well, but it's very dated and the control panel is worn out, so when I found this Sensi model, I decided to give it a try. At first I was going to have my HVAC tech install it, but he has been so busy, I gave up and decided to tackle the job myself. The first thing I noticed is that there is very little documentation with the unit. There is a very small "overview" manual which is really more like marketing literature than an operations manual, and there was no installation manual. I finally found the manual on the Emerson website.Installation was not difficult, but the first thing I discovered is that the thermostat will not work properly until it has been added to the app and setup there. I downloaded the app on my ... MoreI have an older wifi thermostat that has worked well, but it's very dated and the control panel is worn out, so when I found this Sensi model, I decided to give it a try. At first I was going to have my HVAC tech install it, but he has been so busy, I gave up and decided to tackle the job myself. The first thing I noticed is that there is very little documentation with the unit. There is a very small "overview" manual which is really more like marketing literature than an operations manual, and there was no installation manual. I finally found the manual on the Emerson website.Installation was not difficult, but the first thing I discovered is that the thermostat will not work properly until it has been added to the app and setup there. I downloaded the app on my phone which prompted me to create and account, which I did. And here's where I have to give this a 4-star instead of a 5-star rating. Creating an account requires both an email address and a phone number. I can understand the email address as it is used for the account login, but why I must give them my phone number makes no sense.Anyhow, after setting up the account and scanning the thermostat's QR code to add it to the app, I had it working. The app interface is clean and simple to use. It's responsive and I like the features it has like the filter/maintenance reminders. Overall, I like this thermostat. It looks good and works well. I do recommend it.
I love having control of my home at the palm of my hands. From smart lights to garage door openers, it is great to be able to control things through my phone and smart speakers. The only thing that I have upgraded in my home was the HVAC system.Well, it has never been easier and more convenient to take control over your HVAC system. The Emerson - Sensi Lite Smart Programmable thermostat changed all of that and I am now able to control the heating and cooling in my home from just about anywhere.The installation process is very simple. Just find the appropriate wires behind your existing thermostat and make the connections to the Emerson - Sensi Lite Smart Programmable thermostat, and you will be up and running in no-time. There really isn't much to the hardwiring ... MoreI love having control of my home at the palm of my hands. From smart lights to garage door openers, it is great to be able to control things through my phone and smart speakers. The only thing that I have upgraded in my home was the HVAC system.Well, it has never been easier and more convenient to take control over your HVAC system. The Emerson - Sensi Lite Smart Programmable thermostat changed all of that and I am now able to control the heating and cooling in my home from just about anywhere.The installation process is very simple. Just find the appropriate wires behind your existing thermostat and make the connections to the Emerson - Sensi Lite Smart Programmable thermostat, and you will be up and running in no-time. There really isn't much to the hardwiring portion of the installation, but if you are not familiar with electrical connections and components, it might be best to leave it to a professional.After making the appropriate connections, download the app, connect the Emerson - Sensi Lite Smart Programmable thermostat to your home wifi, and you are good to go.I love being able to cool or warm my home from just about anywhere. I am able to come to a more comfortable home thanks to the Emerson - Sensi Lite Smart Programmable thermostat. If I forget to switch my cooling system off, I no longer have to worry and can do it from the palm of my hands.If you are in the market for a smart thermostat, look no further. The Emerson - Sensi Lite Smart Programmable thermostat has been great. I highly recommend it to anyone.
The Sensi Lite Smart Thermostat came in a small box with instructions as well as what I needed to install it including the batteries.Since it is a smart thermostat, it does need to be connected to the Wi-Fi so you will need that and the password, also download the application and a Philips screwdriver to put it onto place.The installation was super easy since the application is very helpful; they even have videos to show how to do it and they even include a phone number just in case.Once the thermostat is installed then it is very easy to use, on the thermostat basically just touch to the desired temperature and on the application has a lot more options. I can schedule the temperature so it gets to the right temperature when before I get there. This thermostat is ... MoreThe Sensi Lite Smart Thermostat came in a small box with instructions as well as what I needed to install it including the batteries.Since it is a smart thermostat, it does need to be connected to the Wi-Fi so you will need that and the password, also download the application and a Philips screwdriver to put it onto place.The installation was super easy since the application is very helpful; they even have videos to show how to do it and they even include a phone number just in case.Once the thermostat is installed then it is very easy to use, on the thermostat basically just touch to the desired temperature and on the application has a lot more options. I can schedule the temperature so it gets to the right temperature when before I get there. This thermostat is for my office so, sometimes I would forget to change the temperature when I was not there, with this new Sensi I can change it from my phone.The thermostat also gives reminders on when to clean the system as well as change the filters, I like this because I often forget to change the filter.The thermostat does work on Gas, Electric and Boiler/Radiant heat. Also it works with Amazon Alexa, Google Assistant as well as Samsung SmartThings so it is complete.I also like the way it looks, simple, clean and smart.I really like how easy the installation was and also how easy the application is to use.
The Emerson Sensi Lite is an entry-level Wi-Fi thermostat that aims to deliver broad system compatibility and easy installation. I am no stranger to Wi-Fi thermostats or their installation, so I was interested in seeing how the Sensi Lite stacked up.The first thing to look into is system compatibility. Emerson has an online tool to check this out, but basically if you have a normal system – blower furnace with and outdoor condenser unit – you should be fine. You also don’t need to have a C-wire for the Sensi Lite to work for you, but it helps.I originally had an Ecobee thermostat installed, and I used its PEK to add a C-wire. My system is just shy of 10 years old, so it has the wiring necessary for a C-wire. However, when my system was updated they didn’t mess ... MoreThe Emerson Sensi Lite is an entry-level Wi-Fi thermostat that aims to deliver broad system compatibility and easy installation. I am no stranger to Wi-Fi thermostats or their installation, so I was interested in seeing how the Sensi Lite stacked up.The first thing to look into is system compatibility. Emerson has an online tool to check this out, but basically if you have a normal system – blower furnace with and outdoor condenser unit – you should be fine. You also don’t need to have a C-wire for the Sensi Lite to work for you, but it helps.I originally had an Ecobee thermostat installed, and I used its PEK to add a C-wire. My system is just shy of 10 years old, so it has the wiring necessary for a C-wire. However, when my system was updated they didn’t mess with the older 4-conductor wire ran in my wall. This is probably a common occurrence in other peoples homes because of the difficulty in replacing those old wires. I wanted to replace the wiring with newer 5-conductor wire, since it was a fairly easy task. However, I installed the thermostat without the new C-wire ran without any issue. I ran it for a few days like that, and then pulled the new wire to add a C-wire to my system. I reinstalled the thermostat and configured with the new wiring layout.There is one main difference between the 2 install types. If you don’t have a C-wire you just install 2 AAA batteries. That’s really it – the thermostat functions the same. You will have to occasionally replace the batteries, and the battery life will be dependent on how often you access the remote connection. The benefit of installing without a C-wire is for older homes with battery powered thermostats or even the old mercury tube-internal thermostats (what I had growing up). This unit will integrate with these systems far easier than thermostats that require a C-wire or need a C-wire extender kit. If you already have a basic programmable thermostat you should be able to swap this unit in place in minutes.The overall design Sensi Lite is fairly sleek. The screen display is pretty basic but easy to read from a distance. The size of the unit is a little on the smaller size which is great for fitting into tight spaces, but comes with some drawbacks. There is no trim plate to dress up behind the Sensi. If your old thermostat is larger (like mine was), and if your wall is a little ugly behind your old thermostat (like mine is) then it will be on display until you fix it up. As far as controls on the Sensi its pretty basic. There is an up/down arrow and the center menu button. Tapping the menu button lets you cycle through the some of the settings – set the system mode (auto, cooling, heat, off), units (F or C), etc. Pressing and holding the menu button lets you configure the Wi-Fi setting to either be on or off.Setting up the Sensi is done through the companion app. It walks you through the whole setup process, has you configure the wiring in your wall, and connects the Sensi to your Wi-Fi. I initially had trouble connecting to my Wi-Fi, so I toggled off my 5GHz bands and got it connected with just the 2.4GHz band enabled. Within the app you have all the options available on the display itself plus quite a bit more. You have access to scheduling routines, fan settings, usage statistics, system notifications, service reminders, and system cycling settings.Setting up the schedule you get a couple of options – no schedule, geofencing, and programmed. Geofencing sets a 3 mile radius around your home and when you leave the area the system sets your temps up or down (heat or cool) by 3 degrees. I tried this out for a bit, and it worked just fine. I didn’t keep it because most of my time is spent within that radius - even grocery runs and going to work, so the temp setpoint rarely adjusted under this mode. However, I can see this mode being useful if you tend to travel outside of that range and your schedule is difficult to nail down enough for a programmed mode. The Programmed schedule lets you configure your temp setpoints for different times of the day, and select which days they apply to.I am missing out on a couple of features compared to the Ecobee it replaced. The Sensi doesn’t have a proximity or occupancy sensor to wake up the display as you get close – rather the display is always on. That proximity sensor was also used in the Ecobee to adjust the setpoint on the fly as it would detect me being home outside of my normal schedule. The Sensi is a little more manual in that approach, but not really to its detriment. There is also no vacation mode like on the Ecobee. With the Sensi you just have to change it to “No Schedule” and bump the setpoints to the desired range. You then have to remember to set things back before you make it home, which was something vacation mode took care of. For the most part these are features I would not expect out of a smart thermostat at the Sensi Lite’s price point, so its not a big deal.Performance wise I have found that the Sensi maintained similar climate control to the Ecobee it swapped out. I can adjust the fan run time to cycle the house air without kicking on the AC condenser (or furnace), which is a more efficient way to keep the house comfortable. The temp readout also seems pretty accurate and I was able to use the exact same setpoints and scheduled times that I had on the Ecobee. It been a pretty seamless transition from the more advanced Ecobee, so I can imagine it would feel like a nice upgrade from a more basic thermostat.Overall, I found the Sensi Lite to be a nice little thermostat. It does a good job of maintaining the temps in my home – on par with the more advanced Ecobee it replaced. The app integration works really well – I had zero issues or faults with connecting to the Sensi while at home or away. The install process was a breeze. The ability to use batteries if you lack a C-wire means greater compatibility, and many basic thermostats can be easily swapped out without having to touch the wiring inside the furnace blower. I do wish the Sensi came with a trim plate due to its smaller size – it is unlikely to cover up the wall space of the thermostat it will replace.
I’ve been using Sensi for the past 4-5 years, and I recommend them to anyone in the market for a smart Thermostat. The previous models worked great. They have all the functionality of the other brands, but at a much better price. The only thing that I wasn’t a big fan of the previous model, was the look which seemed a little outdated. Plus it never seemed to get an update after years of usage. I just moved houses a few months ago and bought another one, which looked identical from the one I had from years before. Cue the touch screen version.This one is smaller and more sleek, and adds a touch of a modern look to your home. This model was ideal compared to the big brother version as I dont have a C-wire (common wire) setup in my house. I’m skeptical about touch ... MoreI’ve been using Sensi for the past 4-5 years, and I recommend them to anyone in the market for a smart Thermostat. The previous models worked great. They have all the functionality of the other brands, but at a much better price. The only thing that I wasn’t a big fan of the previous model, was the look which seemed a little outdated. Plus it never seemed to get an update after years of usage. I just moved houses a few months ago and bought another one, which looked identical from the one I had from years before. Cue the touch screen version.This one is smaller and more sleek, and adds a touch of a modern look to your home. This model was ideal compared to the big brother version as I dont have a C-wire (common wire) setup in my house. I’m skeptical about touch screens though as I’ve had my share of devices that aren’t responsive or required multiple touches to register a command. This one actually seems to work quite well though. ###Even though I use the appFirst the install was pretty straight forward, especially since I was replacing a Sensi. The one thing is, since this is a smaller unit, it was tougher to squeeze the cables together as you don’t have much room to store the wires behind the unit. This unit also takes AAA batteries vs the AA the older unit took, so hoping battery life still lasts for months. Once I got it installed and setup on the app, it was just like using the old version on the phone. It syncs with my Google Home and Samsung Smart Things which is great, and still gets the functionality of the older unit on this even with a smaller screen and less buttons.Since there are no buttons except for 3 touchscreen points, up/down/…(menu), it takes a little more navigating without the extra buttons, but no big deal since I use my app to control most of the settings. LCD is bright but not overly bright. Overall, I think its a good thermostat for your home and stand by their brand. Can’t beat the quality and price of Sensi.
This is the third smart thermostat I've owned. Previous thermostats worked in one or more "walled gardens", but lacked support for others. I found the compatibility of this device to be one compelling reason to install yet another smart thermostat. The other compelling reason was support for hybrid HVAC systems. My home came with a gas furnace and outdoor HVAC that offers both heat pump and regular electric A/C. Each of the previous smart thermostats required me to abandon the efficiency that comes with the heat pump feature. While I didn't see a drop off in energy efficiency due to this sacrifice, I also didn't get the expected savings because of this trade off. The Emerson Sensi Lite offers compatibility with such hybrid systems, which I can already tell will mean ... MoreThis is the third smart thermostat I've owned. Previous thermostats worked in one or more "walled gardens", but lacked support for others. I found the compatibility of this device to be one compelling reason to install yet another smart thermostat. The other compelling reason was support for hybrid HVAC systems. My home came with a gas furnace and outdoor HVAC that offers both heat pump and regular electric A/C. Each of the previous smart thermostats required me to abandon the efficiency that comes with the heat pump feature. While I didn't see a drop off in energy efficiency due to this sacrifice, I also didn't get the expected savings because of this trade off. The Emerson Sensi Lite offers compatibility with such hybrid systems, which I can already tell will mean savings on my monthly energy costs. While the A/C will kick on still now that summer is in full force, during evenings and well into the morning when outside air is still cool, the heat pump cools our home. Additionally, this unit enables me to turn on the whole house fan. I know this doesn't necessarily increase efficiency, but it does when you can exchange a point or two on the thermostat for increased air circulation. While some competitor models feature manual fan operation, I don't know of another that does so AND is compatible with so many smart home platforms.The installation was very simple, as people have come to expect with smart thermostats and smart home devices in general. It took about 10 minutes on the hardware and another few getting the software side setup. It looks great on the wall and I think it's smaller and more compact than the images might suggest. The display is bright, and whether interacting with the touchscreen display, the Sensi App, or the smart home platforms I've adopted, things couldn't be simpler. My preferred way is through Apple HomeKit, which enables Siri commands from various other smart home and/or mobile devices, though Alexa offers many of the same pluses, we just don't have many of those around the house.Given the number of available smart thermostats out there today, I'm glad there's now such an affordable, compatible device out there that doesn't sacrifice on really anything from a design and engineering perspective. Ultimately, Sensi Lite will be many people's ideal smart thermostat and really eliminates the tradeoffs some of the competitor devices require from users.
The Emerson Sensi Lite Smart Thermostat is a reliable and affordable smart thermostat that is easy to install and use. It offers a variety of energy-saving features, including a built-in learning algorithm and geofencing. It is also compatible with a variety of smart home platforms, such as Alexa, Google Assistant, and Samsung SmartThings.The thermostat has a large, easy-to-read display and simple controls that make it easy to adjust the temperature or set schedules. It also comes with a free mobile app that allows you to control your thermostat from anywhere in the world.The thermostat's energy-saving features can help you save money on your heating and cooling bills. The built-in learning algorithm can automatically adjust the temperature to save energy when ... MoreThe Emerson Sensi Lite Smart Thermostat is a reliable and affordable smart thermostat that is easy to install and use. It offers a variety of energy-saving features, including a built-in learning algorithm and geofencing. It is also compatible with a variety of smart home platforms, such as Alexa, Google Assistant, and Samsung SmartThings.The thermostat has a large, easy-to-read display and simple controls that make it easy to adjust the temperature or set schedules. It also comes with a free mobile app that allows you to control your thermostat from anywhere in the world.The thermostat's energy-saving features can help you save money on your heating and cooling bills. The built-in learning algorithm can automatically adjust the temperature to save energy when you are away from home. Geofencing allows the thermostat to turn off the heat or air conditioning when you leave your home and turn it back on when you arrive.The thermostat is also compatible with a variety of smart home platforms, so you can use your voice to control your thermostat or integrate it with other smart home devices.Overall, the Emerson Sensi Lite Smart Thermostat is a great option for anyone looking for a reliable and affordable smart thermostat with energy-saving features.
We’ve been eyeing a smart thermostat for some time now, but the cost has always seemed prohibitive, as has the thought of either an expensive professional installation or a nerve-racking DIY installation of my own. But we rolled the dice on the Sensi Lite given that so many other items in our household are smart-enabled and now part of the Alexa ecosystem of home/remote control capabilities, and I’m thrilled to say that Emerson managed to deliver an incredible amount of capability into a budget-friendly unit that is simple-to-operate while still offering sophisticated HVAC management and control, and it is an absolute BREEZE to install by your lonesome!I’ll start with the app as that is your entry point to see whether the Sensi is even going to be right for you ... MoreWe’ve been eyeing a smart thermostat for some time now, but the cost has always seemed prohibitive, as has the thought of either an expensive professional installation or a nerve-racking DIY installation of my own. But we rolled the dice on the Sensi Lite given that so many other items in our household are smart-enabled and now part of the Alexa ecosystem of home/remote control capabilities, and I’m thrilled to say that Emerson managed to deliver an incredible amount of capability into a budget-friendly unit that is simple-to-operate while still offering sophisticated HVAC management and control, and it is an absolute BREEZE to install by your lonesome!I’ll start with the app as that is your entry point to see whether the Sensi is even going to be right for you and your HVAC system before you even open the box. Again, I must give Emerson credit for its Sensi app setup wizard—it really is just about idiot-proof. As long as you can turn off the power to your existing system and can read the labels and colors of the existing wiring to your current thermostat’s mounting block, the app’s easy-to-understand pictures simply and confidently guide you through every step. My total installation time was less than 20 minutes.Once the old thermostat is off the wall, the app gives you a “Wire Picker” screen; you simply press the dots that correspond to the color/connection of the wires you see in front of you and the app will tell you whether you have a “valid configuration” that supports easy changeover to the Sensi thermostat’s wiring scheme. Then you indicate what kind of heating system you have (electric, gas, boiler/radiant) and affix the provided sticky labels onto each wire based on how they are hooked up to your old thermostat—don’t worry, the app tells you which labels to use with which wires. Once you unhook the wires and remove the old thermostat’s mounting block, the app tells you which newly labeled wires go into which port of the Sensi’s wiring block. Connect the wires, mount the backplate, then stick the Sensi into the mounting bracket and you’re nearly done.Using your cell phone’s camera, scan the included QR code card which will establish a BT connection between your phone and the Sensi thermostat while it works to configure WiFi access to your home router. The only gotcha at all here is that the Sensi is only 2.4Ghz-capable, so those of you who have nothing but high-speed 5Ghz or even 6Ghz networks and clients will need to roll back to a wireless router that uses its 2.4Ghz radio as well.That’s it—once you’re online, you can use the Sensi app to start controlling heating or AC, setting up schedules, checking daily and monthly logs of system usage…the flexibility is really quite extensive. But what sold me on this unit was that is has an AUTO mode that lets you set a minimum temp before heat kicks in and a maximum temp for AC cooling. This was especially important to us because our spring and fall days often vary by 20 degrees or more which means we were constantly running to our thermostat to change from heat to AC once the sun started baking our house, but then we’d have to remember to switch back over to heat at night or we’d wake up freezing cold the next morning. This unit does all that for you…AWESOME!Voice assistant integration is also here—it is such a pleasure to be able to tell Alexa to change the temperature from the comfort of our bed, or even set routines for varying minimum/maximum heating or cooling temps during the day when we’re gone from the house or away on vacation if you don’t want to use the Sensi app to do so as well. And yes, Alexa can even change the operation mode between heat, AC, or AUTO as well.You want even more? Using the app, you can set a thermostat schedule for “Geofencing” and it will automatically roll back the temperature by 3 degrees when you leave (well, okay, when your phone leaves) a 3-mile radius from your home. This may not work well with multiple people on multiple schedules in the same house, but it’s cool to have the option for those of you who want to improve energy efficiency or cut heating/AC costs without having to worry about setting a specific time on a preset schedule to raise or lower the temperature. The app also offers a helpful “Early Start” option for any schedule so that heating or cooling starts slightly ahead of time so that you reach your desired temperature *by* the scheduled time rather than starting your heating or cooling at that time…nice for making sure the house is comfy by the time you normally come home from work/play rather than having to wait around for things to get cooler or toasty.The face of the thermostat itself is quite simple with just a minimal LED display that is not blindingly bright in a darkened room or hallway. There is also a touch-sensitive mode button and two arrows for up/down temperature adjustment. If you just want to rock your AC and heat old-school, you can sidle up to the panel and manually adjust it as well, skipping all those fancy features in either the Sensi app or through home automation via digital assistant. Honestly, I’m not sure what more you could really ask for!If you are already comfortable with app-style interfaces and setup, or Alexa/Google-style automation for other smart home appliances and electronics, you should have NO problems at all with any sort of intimidating or overwhelming setup or usage experience with the Sensi Lite—it is intuitive, simple, and very flexible. The fact that the app literally holds your hand with colorful, accurate and simple graphics and diagrams along the way means that even those of you who might be timid about a DIY install can do so with ease and assurance. The fact that you get so much capability, and a 3-year warranty, for a pretty bargain-basement price is just icing on the cake. Based on our experience installing and using the thermostat, unless you need an absurdly complex home control hub that also plays music, forecasts the weather, or rotates video streams or family photos, I can’t think of a single reason why you wouldn’t be happy with the Sensi Lite. VERY HIGHLY RECOMMENDED!
| Controller type | Hand Control |
| Product dimensions | 2.24 x 12.88 x 7.95 cm; 136.08 Grams |
| Batteries | 2 AAA batteries required. (included) |
| Style | Simple |
| Shape | Rectangular |
