Sensi Smart Thermostat, 100 Years Of Expertise, Wi-Fi, Data Privacy, Programmable, Easy DIY Install, Works With Alexa, Energy Star Certified, Mobile App, ST55











Buy Now, Pay Later
- – 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.
Selected Option
30-day refund/replacement
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.
Recently Viewed
Style: DIY
Pattern Name: Thermostat
Features
- PRIVACY PROTECTION*: Sensi wont sell your personal information to third parties
- EASY DIY INSTALLATION: Use the built-in level and step-by-step app instructions for a quick installation. Works with HVAC equipment found in most homes. Common wire (c-wire) is not required in most applications
- SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling, remote access, and usage reports
- SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your equipment, and maintenance reminders like filter replacement
- SIMPLE CONFIGURATION: Looks and feels like a thermostat. Has buttons and fits the same space as a traditional thermostat so you dont have to patch and paint your walls
Description
DIY your smart home with the Sensi smart thermostat. Compatible with most residential HVAC systems — no common wire (c-wire) required in most applications. You can trust Sensi as we do not sell your personal information to third parties. And Sensi comes with the dependable performance and reliability you can count on from our 100 years of HVAC experience. With our top-rated mobile app and easy installation process, customers of all comfort levels can make the switch to a Sensi smart thermostat. For more information on Compatibility, Energy Savings, and Privacy Protection, please refer to the “Product Documentation” section below.
Brand: Emerson
Model Name: Wi-Fi Thermostat for Smart Home, DIY Version
Product Dimensions: 1"D x 5.88"W x 3.75"H
Special Feature: Filter Indicator, Clock Display, Fan Control, Auto Changeover, Daylight Savings Time Ready
Brand: Emerson
Model Name: Wi-Fi Thermostat for Smart Home, DIY Version
Product Dimensions: 1"D x 5.88"W x 3.75"H
Special Feature: Filter Indicator, Clock Display, Fan Control, Auto Changeover, Daylight Savings Time Ready
Color: White
Specific Uses For Product: Boiler, Heat Pump, Air Conditioner, Furnace
Connectivity Technology: Wi-Fi
Included Components: Leviton 80409-GY Decora Wall Plate, 2 Gang, Grey
Power Source: Corded Electric
Item Weight: 0.85 Pounds
Voltage: 24 Volts (AC)
Material: Plastic
Shape: Rectangular
Display Type: LED
Screen Size: 5 Inches
Control Type: Button Control
Control Method: Voice
Connectivity Protocol: Wi-Fi
Mounting Type: Wall Mount
Style: DIY
Backlight: Yes
Number of Batteries: 1 AAA batteries required. (included)
UPC: 786710554827
Global Trade Identification Number: 27
Manufacturer: Emerson Thermostats
Item Weight: 13.6 ounces
Department: Unisex-Adult
Country of Origin: USA
Item model number: ST55
Batteries: 1 AAA batteries required. (included)
Is Discontinued By Manufacturer: No
Assembly required: No
Number of pieces: 1
Warranty Description: Warranty.
Batteries required: No
Import: Made in the USA
Frequently asked questions
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
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews

