
Amazon Smart Thermostat
Score: 73/100
ecobee Smart Thermostat Enhanced
Score: 86/100Rankings

The ecobee Smart Thermostat Enhanced delivers up to 26% energy savings, geofencing and radar occupancy detection with a vibrant 4-inch touchscreen. It lacks air-quality monitoring and multi-zone support, which may limit advanced users. Ideal for single-zone homeowners seeking strong energy-saving features and wide smart-home integration.

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 inch | 4 inchbest | |
| ↓ lower better | 0.11 kgbest | 0.24 kg |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(1) | ||
HVAC Compatibility | 24V | 24 VAC systems (gas/oil/electric furnaces, dual fuel, forced air, heat pump, boilers) |
Connectivity(1) | ||
Smart Home Integration | Alexa, Ring | Siri, Alexa, Google Assistant, Apple HomeKit, SmartThings, IFTTT |
Power & Installation(2) | ||
C‑Wire Requirement | true | false |
Power Source | C‑wire (24V) | HVAC system wiring with optional Power Extender Kit |
Display(1) | ||
Screen Size (inch) | 0.9 inch | 4 inch |
Build & Design(2) | ||
Device Weight (kg) | 0.1095 kg | 0.24 kg |
Device Dimensions (H×W×D) (mm) | 21.4×90.4×90.4 mm mm | 103.89x103.89x23.88 mm |

Products in the top-left offer the best value (high score, low price).

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.

“Easy Alexa-guided install (even with new C-wire)”

“Heats to 68°F home, drops to 52°F away”

“Very user-friendly with many features; compact and attractive on the wall; effortless control and energy savings (pays for itself quickly).”



Choose Amazon for budget-focused Alexa users; choose Ecobee for richer UI and multi-assistant support.

Professional reviewers commend the Enhanced model for its proven energy-efficiency, radar-based occupancy detection and extensive voice-assistant integrations, calling it a trusted, planet-friendly choice. They note, however, that it misses premium features such as air-quality monitoring and bundled remote sensors, and that installation can be a bit daunting for novices.
Everyday users appreciate the thermostat's intuitive touchscreen, sleek compact look and the quick payoff from energy savings, describing it as very user-friendly. Common frustrations revolve around the need to follow detailed setup instructions and the lack of extra sensors found in higher-end models.