Search  for anything...
Emerson Thermostats

Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not Required on Most Systems **New 2023!**

    • Based on 100 reviews
Condition: New
Checking for product changes
$73.00 Why this price?
Holiday Deal · 19% off was $89.99

Buy Now, Pay Later

As low as $12.17 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 2 left in stock, order soon!
Fulfilled by MidwestBestdeals
Arrives Dec 30 – Jan 3
Order within 12 hours and 42 minutes
Available payment plans shown during checkout

Features

  • EASY DIY INSTALLATION: Do it yourself fast with a built-in level and simple step-by-step instructions. Works with the HVAC equipment found in most homes. No common wire (c-wire) required on most systems (only required on heat only and cool only systems)
  • SAVE ABOUT 23% ON HVAC ENERGY*: ENERGY STAR-certified and packed with features that help you save money, including flexible scheduling, geofencing, remote access and usage reports
  • PRIVACY PROTECTION*: Sensi wont sell your personal information to third parties or leverage your thermostat activity data for targeting or advertising purposes
  • CONTROL FROM ANYWHERE: The top-rated mobile app for Android and iOS devices makes it easy to control your comfort from a smartphone or tablet
  • SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering usage reports, alerts about your equipment, and maintenance reminders like filter replacement

Description

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. For full details, review the Sensi Privacy Policy under the “Products Documentation” section below. Note: if you sign up for a program with a third party, such as a utility or controller, details and terms for that program are between you and the third party, not Emerson, and may include additional data collection. Certain add-on services require additional data to operate as intended. These services are not required and are optional.


Brand: Emerson Thermostats


Model Name: Sensi Lite


Item Dimensions LxWxH: 0.88 x 5.07 x 3.13 inches


Special Feature: Filter Indicator, Low Voltage, Auto Changeover, Daylight Savings Time Ready, Programmable


Brand: Emerson Thermostats


Model Name: Sensi Lite


Item Dimensions LxWxH: 0.88 x 5.07 x 3.13 inches


Special Feature: Filter Indicator, Low Voltage, Auto Changeover, Daylight Savings Time Ready, Programmable


Color: Black


Specific Uses For Product: Boiler, Air Conditioner, Heat Pump, Furnace


Connectivity Technology: Wi-Fi


Included Components: Installation Guide, Sensi Lite Smart Thermostat, Mounting Hardware, Wire Labels, (2) AAA Batteries


Item Weight: 0.3 Pounds


Voltage: 24 Volts


Shape: Rectangular


Display Type: LCD


Control Type: App Control


Number of Items: 1


Control Method: App


Connectivity Protocol: Wi-Fi


Mounting Type: Wall Mount


Style: Simple


Backlight: Yes


Specification Met: Energy Star


Number of Batteries: 2 AAA batteries required. (included)


Product Dimensions: 0.88 x 5.07 x 3.13 inches


Item Weight: 4.8 ounces


Manufacturer: Emerson


Item model number: ST25


Batteries: 2 AAA batteries required. (included)


Warranty Description: 3 years.


Batteries required: Yes


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 30 – Jan 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Our second Sensi, had to fight with wifi setup.
Style: Simple
One it was configured, it seems to work fine. I like the smaller size and the modern black front to the thermostat. It took only about 15 minutes to swap the wires from our old "dumb" thermostat and test it out. We had lots of trouble setting up the wifi. We tried replacing the batteries, resetting the thermostat to factory (press and hold the middle button for about 5 seconds), nothing seemed to work. My very recent Android phone failed on setting up the wifi. It was able to start the spinny animation going on the thermostat, but never found any wifi access points. I thought the WiFi was broken on the thermostat. I was wrong. What finally worked was running setup from my old Android 10 tablet. That immediately got further in the setup and was able to see all the WiFi SSIDs in the neighborhood, and configuration completed successfully. My Google Pixel 7a, which is running Android 13, could not get wifi setup to work. Trying a different device was not on the list of suggestions they give, so we lucked out there. So if you can't get the WiFi setup to work, try a different phone or tablet, it may have better success. ... show more
Reviewed in the United States on July 2, 2023 by Jack G.
    • Good thermostat
Style: Simple
It’s a pretty good thermostat. Manly bought it so I could lock people out but you can’t do it on the app or thermostat. You have to pay a subscription and go to a manager site to control it. I tried it but it was a pain to do it. No app for the manager app so having to type in the address ever time was a pain so canceled my free trial. Everything else works ok. It has a low and high setting but have a low limit for A/c and high limit for heat. Wish it had a low and high limit for both but for the money it does the job. It’s just not as “smart” as I wish it was. ... show more
Reviewed in the United States on July 23, 2023 by Michael
    • Excellent thermostat and easy DIY install.
Style: Simple
This thermostat is very simple and easy to install. I had mine physically mounted and operating in less than 45 minutes - starting with the removal of the old thermostat. The best part of the entire operation is Sensi's support team. Have a question?? CALL THEM. They may take a little while to get to you, but you will indeed get an actual fellow human on the line and they (by me they're 100%) WILL get your problems and questions answered and handled. I actually called them in advance of my purchase because I was concerned about the thermostat being compatible with my heat pump unit and old thermostat, and they were most helpful in making my decision to purchase the Sensi unit and what I needed to do when installing it, so it would work correctly with my system. After installation, I did have another (minor) problem with the operation of the thermostat, = another call to their support. = another support problem solver answer. = Thermostat has been flawless in operation ever since. ... show more
Reviewed in the United States on July 11, 2023 by Mel&I
    • Great product, Better customer service
Style: Simple
Purchased this thermostat to help us manage our power saving program during peak hours. Sensi has perfected DYI by making the installation so simple for novices like me. Their step by step tutorial with helpful pics made installation a breeze. I had some self inflicted issues that required phone customer service. Being summer and their peak season, it took a while for my call to be answered. No worries though as the person handling my issue was patient, and stayed on the phone until everything worked as it should. This thermostat is precisely what we needed. The Sensi app that controls the thermostat from any location, is so user friendly. We’ve scheduled a seven day program that will maximize our savings with our utility company. I should mention that being able to schedule individual days as well as any number of times throughout the day the temperature we preferred was one of the main factors in choosing Sensi. We highly recommend this thermostat as well as the company standing behind this phenomenal product! ... show more
Reviewed in the United States on July 1, 2023 by Smart Shopper
    • Simple
Style: Simple
Didn’t want a complicated app/thermostat. Just something simple that allows me to set a schedule. Install took 10 minutes and app is simple to use. We’ve had it installed for about a month now and no complaints.
Reviewed in the United States on August 11, 2023 by J. Carrillo
    • Very stylish thermostat
Style: Simple
I had an older thermostat that I hated. It gobbled batteries like they were going out of style and the interface was lousy. Also, it would lose wifi connection easily then be hard to reconnect. This thermostat looks great. The interface is super simple and easy to operate but most important it maintains its connection to our wifi and Alexa. Also, it’s a lot less consuming of batteries. ... show more
Reviewed in the United States on July 26, 2023 by Adam
    • Awesome thermostat
Style: Simple
Review Image by fyi fyi
Review Image by fyi fyi
Review Image by fyi fyi
Review Image by fyi fyi
Review Image by fyi fyi
Okay about this Sensi lite , the shipping was quick and I was able to mount & program it in about 10 minutes total. It easily connected to my WiFi , I am getting a rebate through my power company. I also signed up for an energy savings program and got my first savings event. I really love everything about this other then the fact the day or two after purchase the priced dropped by 10$ so that part I’m not very happy about at all. (my review reflects the item only) ... show more
Reviewed in the United States on July 12, 2023 by fyi fyi
    • Great and easy
Style: Simple
Easy to install, just follow the instructions for connecting the wires and it is as easy as plug and play.
Reviewed in the United States on August 17, 2023 by Marlon Herrera

Can't find a product?

Find it on Amazon first, then paste the link below.