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Sensi

Sensi, by Emerson, delivers innovative Wi-Fi smart thermostats with touchscreen displays, Alexa integration, and Energy Star certification for effortless home energy savings.

7 products Updated June 4, 2026

Sensi Products (7)

1
Prime

Emerson 1F83C-11NP Non-Programmable Thermostat - Easy DIY Install, Backlit Display, 1H/1C Heat Pump Compatible, White

Sensi
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Simple DIY installation even for beginners
  • Clear, oversized backlit display for low-light visibility
  • Versatile compatibility with single-stage systems
  • Advanced features like dual fuel control and auto-changeover
  • Durable with 3-year warranty

Cons

  • Non-programmable, so no automatic scheduling
  • Limited to single-stage (1H/1C) systems only
  • Not compatible with line voltage or proprietary HVAC protocols
2
Prime

Sensi Touch ST75 Smart Thermostat - Color Touchscreen, WiFi, Alexa Compatible, Energy Star, Easy DIY Install, Privacy Protected - Silver

Sensi
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Energy Star certified for proven savings and efficiency
  • User-friendly touchscreen and app for effortless control
  • Comprehensive usage reports and smart alerts enhance HVAC longevity
  • Simple DIY install compatible with most home systems
  • Strong data privacy commitment builds trust

Cons

  • Requires C-wire for power, not suitable for battery-only setups
  • Limited to 2.4 GHz Wi-Fi networks
  • No built-in battery backup option
3

Sensi Touch ST75 Wi-Fi Smart Thermostat with Color Touchscreen, Alexa Compatible, Energy Star Certified, C-Wire Required - Black

Sensi
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • High 4.4/5 rating from over 14,000 reviews confirms reliability
  • Touchscreen color display offers intuitive navigation and readability
  • Works seamlessly with Alexa for hands-free voice control
  • Comprehensive app provides remote access, reports, and alerts
  • DIY-friendly installation backed by HVAC expert support

Cons

  • Requires C-wire for power, not compatible without it
  • Limited to 2.4 GHz Wi-Fi networks
  • Higher upfront cost compared to basic programmable thermostats
4
Prime

Sensi ST55 Smart Thermostat WiFi - Easy DIY Install, No C-Wire Most Homes, Alexa Compatible, Energy Star, Privacy Protected

Sensi
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Easy DIY installation with app instructions and no c-wire for most homes
  • Strong privacy protection and no data selling
  • Energy Star certified with potential 23% energy savings
  • Alexa compatibility and remote access via mobile app
  • Smart maintenance alerts for HVAC efficiency

Cons

  • No color touchscreen display
  • Limited to 2.4 GHz Wi-Fi networks
  • C-wire required in some HVAC applications
5
Prime

Sensi Touch 2 ST76 Smart Thermostat - Touchscreen WiFi, Alexa Compatible, Energy Star, Easy DIY Install, Room Sensors, Save 23% Energy - C-Wire Required

Sensi
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Energy Star certified for proven energy savings and efficiency
  • Touchscreen color display for intuitive local control
  • Universal compatibility with most U.S./Canada HVAC systems
  • Top-rated app simplifies setup and ongoing management
  • Integrates with major smart home platforms like Alexa

Cons

  • Requires C-wire, which may need an adapter for some homes
  • Room sensors sold separately for full temperature balancing
  • Zero customer reviews available yet as a newer model
6
Prime

Sensi Touch 2 ST76W Smart Thermostat - Touchscreen WiFi, Alexa Compatible, Energy Star, 23% Savings, Easy DIY Install, C-Wire Required

Sensi
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Energy Star certified for proven efficiency and savings
  • Top-rated app simplifies setup and control
  • Strong privacy protections and no data selling
  • Compatible with most U.S./Canada HVAC systems with C-wire
  • Touchscreen color display for intuitive local use

Cons

  • Requires C-wire, not compatible without it
  • Room sensors sold separately
  • No customer reviews available yet
7
Prime

Sensi Lite ST25 Smart Thermostat - WiFi Programmable, Energy Star, Easy DIY No C-Wire Most Systems, Alexa, Privacy Protected

Sensi
9.5
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Quick, user-friendly DIY setup with built-in level and step-by-step app guidance
  • Strong energy savings potential through smart features like geofencing
  • Top-rated app enables easy remote access and control
  • Robust privacy protections without data selling
  • Broad compatibility with most home HVAC systems and Alexa

Cons

  • C-wire required for heat pump and heat/cool-only systems
  • No customer reviews available yet to confirm long-term performance

Sensi Brand Guide

Sensi Brand Overview and History

Sensi is a premier brand under Emerson, a global leader in heating, ventilation, and air conditioning (HVAC) technology with over 100 years of expertise. Launched to bring smart home innovation to everyday consumers, Sensi thermostats revolutionized home climate control by introducing affordable, user-friendly Wi-Fi enabled devices. Since their inception, Sensi has focused on data privacy, energy efficiency, and compatibility with major smart home ecosystems like Alexa. Today, Sensi products are trusted by millions for their reliability, earning consistent 4.4/5 ratings across models. From the classic ST55 to advanced touchscreen variants like the ST75 and ST76, Sensi continues to set the standard in programmable thermostats within the Tools & Home Improvement category, specifically HVAC thermostats and accessories.

Key Product Categories and Features

Sensi specializes in programmable smart thermostats, falling under Building Supplies > HVAC > Thermostats & Accessories. Their lineup caters to various home setups, emphasizing ease of use and smart features.

  • Sensi Touch Wi-Fi Smart Thermostat (ST75): Features a vibrant touchscreen color display, 5.625" x 3.4" x 1.17" size, C-wire required. Works with Alexa, Energy Star certified for up to 23% energy savings.
  • Sensi Smart Thermostat (ST55): Compact, Wi-Fi programmable with mobile app control. Easy DIY install, data privacy focused, compatible with most systems.
  • Sensi Touch 2 (ST76 & ST76W): Upgraded touchscreen models with enhanced UI, Wi-Fi connectivity, Alexa integration, and C-wire requirement. Black finish for modern aesthetics.
  • Sensi Lite (ST25): Budget-friendly option, no C-wire needed for most systems (except heat/cool only or heat pumps). Programmable, Wi-Fi, Alexa-ready, and Energy Star certified.

Common standout features across Sensi products include geofencing for auto-adjustments, scheduling via app, usage reports for optimization, and robust compatibility with 99% of HVAC systems. All models prioritize user data privacy with no cloud selling, ensuring peace of mind.

Why Choose Sensi Thermostats?

Choosing Sensi means investing in proven performance and savings. Unlike generic brands, Sensi's Emerson heritage guarantees durability and precision engineering. Users rave about the intuitive apps that simplify scheduling and remote control, potentially slashing heating/cooling bills by 10-25%. DIY installation takes under 30 minutes for most, with free support resources. Integration with Alexa allows voice commands like 'Alexa, set thermostat to 72 degrees,' enhancing smart home synergy. Energy Star certification not only qualifies for rebates but also underscores eco-friendliness. With high ratings and versatile models—from touchscreen luxury to lite versions—Sensi fits any budget or lifestyle. Whether combating uneven temperatures or aiming for sustainability, Sensi delivers reliable, feature-packed programmable thermostats that outperform competitors in value and user satisfaction.

In a market flooded with smart devices, Sensi's commitment to privacy, ease, and efficiency shines. Real customer feedback highlights quick setup, responsive support, and tangible savings, making it the go-to for homeowners upgrading their HVAC controls.

FAQ

Are Sensi thermostats compatible with all HVAC systems?

Yes, Sensi thermostats work with 99% of systems, including single-stage, multi-stage, heat pumps, and millivolt. Check specific models like ST25, which skips C-wire for most setups.

Do Sensi thermostats require a C-wire?

Models like ST75, ST76 require a C-wire; ST55 and ST25 often don't, with adapters available for compatibility.

Can I control Sensi thermostats with Alexa?

Absolutely—all Sensi models integrate seamlessly with Alexa for voice control, scheduling, and automation.

How easy is the DIY installation for Sensi?

Very easy—most installs take 20-30 minutes with step-by-step app guidance and video tutorials provided.

Does Sensi offer energy savings guarantees?

Energy Star certified models like ST55 and ST75 can save up to 23% on bills, backed by usage insights and smart features.