Emerson Sensi Touch
Score: 82/100
Amazon Smart Thermostat
Score: 73/100Rankings
The Emerson Sensi Touch provides a color LCD touchscreen, geofencing, and wide smart-home compatibility while being ENERGY STAR certified. Mandatory C-wire power and lack of 5 GHz Wi-Fi or battery backup constrain some installations. It fits homeowners wanting reliable scheduling and voice-assistant control without premium pricing.
The Amazon Smart Thermostat is an ENERGY STAR-certified, Alexa-focused thermostat with auto-learning temperature control and a compact touch-sensitive display. Its main trade-offs are the mandatory C-wire and limited 2.4 GHz Wi-Fi with no built-in voice mic. Ideal for Alexa/Ring users seeking an affordable, easy-install solution.
| Attribute | | |
|---|---|---|
3 yearsbest | — | |
— | 0.9 inchbest | |
| ↓ lower better | — | 0.11 kgbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
General(1) | ||
HVAC Compatibility | Single/multi-stage gas/oil/electric, heat pumps, heat/cool only; not millivolt or 3-wire zone | 24V |
Connectivity(2) | ||
Wi‑Fi Standard | 2.4 GHz | 802.11 b/g/n (2.4GHz) |
Smart Home Integration | Alexa, Google Assistant, Apple HomeKit, SmartThings | Alexa, Ring |
Power & Installation(1) | ||
Power Source | Hardwired 24V | C‑wire (24V) |
Display(1) | ||
Display Type | Touchscreen color LCD | Touch-sensitive |
Build & Design(1) | ||
Device Dimensions (H×W×D) (mm) | 85.9x142.9x25.4 mm mm | 21.4×90.4×90.4 mm mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers, including USA Today's Reviewed.com, named the Sensi Touch the best overall smart thermostat for multiple years, praising its intuitive menus, clear backlit display, precise control, and smart alerts.
Everyday users consistently commend the easy installation, straightforward app, and effective geofencing that delivers noticeable energy savings. Common criticisms focus on the mandatory C-wire, occasional Wi-Fi reliability issues, and the lack of room sensors or battery backup.
“Easy Alexa-guided install (even with new C-wire)”
“Heats to 68°F home, drops to 52°F away”
Professional reviewers consider the Amazon Smart Thermostat a strong value proposition, praising its auto-learning algorithm, tight Alexa integration, and broad 24V HVAC compatibility while noting its ecosystem constraints, mandatory C-wire, and limited connectivity as notable drawbacks.
Everyday users generally appreciate the straightforward Alexa-guided setup, reliable auto-scheduling, and remote app control that delivers noticeable energy savings, but they frequently cite the C-wire requirement and occasional cycling glitches as pain points.
