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Last updated June 2026
Top Rated

Sensi Touch smart thermostat

4.5
14,186 ratings

Model: ST75W

$149.99
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Our review

Sensi Touch Smart Thermostat Review: DIY-Friendly Comfort Without the Subscription

A simple, budget-friendly touchscreen thermostat that installs fast and plays well with Alexa, Google Home and HomeKit, though WiFi setup can trip up some routers.

The verdict

The Sensi Touch is built for homeowners who want a straightforward smart thermostat they can install themselves in minutes, without hiring an electrician or wrestling with a complicated app. Buyers consistently praise the color touchscreen, the guided wiring setup, and broad voice-assistant support, while the main friction point is getting the WiFi connection to pair on some home networks. For the price, it delivers real energy-saving scheduling and remote control that feels like a strong value.

Best for
  • DIY homeowners installing their own thermostat
  • Buyers wanting Alexa, Google Home or HomeKit control
  • Budget-conscious smart home upgraders
  • Households wanting humidity and temperature monitoring

Pros

  • Straightforward DIY installation with guided wiring setup in the app
  • Clear, easy-to-read 4.3 inch color touchscreen
  • Works with Alexa, Google Home, Apple HomeKit, SmartThings and Home Assistant
  • Built-in temperature and humidity sensors
  • No batteries required
  • 3-year warranty

Cons

  • 2.4GHz WiFi only, which some buyers find fiddly to pair
  • No included remote temperature sensor (trim plate and sensor are extra-cost add-ons)
  • No Matter or Thread support
  • No occupancy sensor, air-quality alerts or built-in speaker

Who is the Sensi Touch smart thermostat for?

The Sensi Touch is aimed at homeowners who want to upgrade a standard thermostat themselves rather than pay for professional installation. Reviewers frequently mention swapping it in for older programmable thermostats or replacing a competing smart thermostat that gave them trouble, using nothing more than a screwdriver. It suits a wide range of HVAC systems, including gas furnaces, heat pumps and two-stage heating setups, and its 4.3 inch color touchscreen makes it easy to read and adjust from across the room. Because it works with Alexa, Google Home, Apple HomeKit, Samsung SmartThings and Home Assistant, it also fits naturally into an already-connected smart home.

What buyers love

The most consistent praise is for how easy the physical installation is: the companion app walks users through identifying their existing wiring and mapping it to the new terminals, which reviewers call a major relief compared to guessing at wire labels. Many highlight the clear, backlit touchscreen display and the ability to control temperature and schedules remotely from a phone. Owners also like the built-in temperature and humidity monitoring, the energy-saving scheduling features, and that no batteries are required since it draws power from the HVAC system itself. Several buyers who work in HVAC or have tried other smart thermostats describe the Sensi Touch as simpler and more reliable day to day.

What to know before you buy

The recurring complaint is WiFi setup: a subset of buyers report a difficult or lengthy process getting the thermostat to connect to their home router, occasionally requiring a support call to resolve. This tracks with the spec sheet, which lists only 2.4GHz WiFi support (no 5GHz band), so routers that broadcast a combined or 5GHz-only network name can cause pairing friction. The thermostat also does not ship with an extra remote temperature sensor, has no Matter or Thread support yet, and skips extras like a room-occupancy sensor, air-quality alerts or a built-in speaker, so buyers wanting a fuller smart-sensor suite should look elsewhere. A trim plate is available but at extra cost rather than included.

Is the Sensi Touch smart thermostat worth it?

Given its low-to-mid price point, DIY-friendly install, broad voice-assistant compatibility and a 3-year warranty (longer than many rivals), the Sensi Touch is a strong value pick for anyone replacing an old thermostat without wanting to deal with a complex ecosystem. It is not the most sensor-rich smart thermostat on the market, but for scheduling, remote control and everyday reliability at an accessible price, it consistently earns high marks from the people who actually installed one.

Frequently asked questions

Is the Sensi Touch thermostat easy to install myself?

Yes. Buyers consistently describe the installation as DIY-friendly, with the app guiding you through matching your existing thermostat wiring to the new terminals using only basic tools.

Does the Sensi Touch work with Alexa, Google Home and Apple HomeKit?

Yes, it integrates with Alexa, Google Home, Apple HomeKit, Samsung SmartThings and Home Assistant, so it can slot into most existing smart home setups.

Does the Sensi Touch need a C-wire?

It is designed to work with most HVAC wiring configurations, and several reviewers successfully installed it without adding a dedicated C-wire, though compatibility depends on your specific system.

Does the Sensi Touch support 5GHz WiFi?

No, it only supports 2.4GHz WiFi. Some buyers report connection difficulties, which is more common on routers that only broadcast a 5GHz or combined network.

Does the Sensi Touch include a remote temperature sensor?

No, a remote temperature sensor is not included, and the optional trim plate is sold separately at extra cost.

Does the Sensi Touch support Matter?

No, the Sensi Touch does not currently support the Matter smart home standard.

At a glance

Summary

Everything this thermostat supports, grouped by category.

Size & Materials
5.4 × 3.2 × 1 in (137 × 81 × 26 mm)Available in colors
Included accessories
Trim Plate
Connectivity
2.4 GHz WiFi
Integrations
Google HomeAlexaApple HomeKitSamsung SmartThingsHome Assistant
Display
LCDColor ScreenTouch Screen4.3"
Sensors
TemperatureHumidity
Scheduling
ManuallyAutomatically
Features
Energy SavingsDisplay TimeDisplay TemperatureVoice Control

Price History

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Company
Sensi logo

Sensi

4.4/ 5 avg ratingUSA flagHeadquartered in USA

Sensi, a brand of Emerson, makes smart thermostats focused on easy DIY installation and reliable HVAC control. Its thermostats offer scheduling, remote control and energy-saving features through the Sensi app, with support for Alexa, Google Home and Apple HomeKit on select models. Sensi appeals to homeowners wanting an affordable, easy-to-install smart thermostat.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials

Dimensions

5.4 × 3.2 × 1 in (137 × 81 × 26 mm)

Weight

?

Available in colors

YES

Included accessories

Trim Plate

YES (extra cost)

Temperature Sensor

NO

Connectivity

2.4 GHz WiFi

YES

5 GHz WiFi

NO

Bluetooth

NO

Z-Wave

NO

Zigbee

NO

Thread Protocol

NO

Integrations

Google Home

YES

Alexa

YES

Apple HomeKit

YES

Samsung SmartThings

YES

Home Assistant

YES

IFTTT

NO

Matter

NO

External Temperature Sensors

NO

Display

Screen

YES

Screen Type

LCD

Color Screen

YES

Touch Screen

YES

Screen Size

4.3"

Screen Resolution

?

Sensors

Proximity / Motion

NO

Occupancy

NO

Temperature

YES

Humidity

YES

TVOC

NO

CO₂

NO

Ambient Light

NO

Alerts

Temperature Alerts

NO

Air Quality Alerts

NO

Fire Alerts

NO

Intrude Alerts

NO

Scheduling

Manually

YES

Automatically

YES

Suggestions

NO

Features

External Temperature Sensors Selection

NO

Energy Savings

YES

System Health Monitor

NO

Display Time

YES

Display Temperature

YES

Display Weather

NO

Voice Control

YES

Speaker

NO

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