Short on time? The thermostats below are “stack ranked”, with our favorites at the top.
| What's unique? | Alexa enabled | C-wire required? | Price | Our Review | |
|---|---|---|---|---|---|
 ecobee3 lite | Touch screen, price point | Yes | Yes, but a Power Extender Kit is included for systems without | Check price | ecobee3 lite Review |
 ecobee3 | Room sensors, HomeIQ reports | Yes | Yes, but a Power Extender Kit is included for systems without | Check price | ecobee3 Review |
 Emerson Sensi | Traditional programmable thermostat design with WiFi features | Yes | No, unless your system is heat only or cool only | Check price | Sensi review |
 Nest Learning Thermostat | Simplicity of use, earn "Leaf" badges | Yes | It's complicated | Check price | Nest Review |
 Ecobee Smart Si | Budget friendly, data reports | No | Yes, separate Power Extender Kit is available for systems without a c-wire | Check price | Smart Si Review |
 ecobee Smart Thermostat | Data reports, granular control | No | Yes, separate Power Extender Kit is available for systems without a c-wire | Check price | Ecobee Review |
 Honeywell Wi-Fi Smart Thermostat | Email alerts, full-featured touch screen | Yes | Yes | Check price | Honeywell Wi-Fi Review |
ecobee3 lite |
|---|
| What's unique: Touch screen, price point |
| Amazon Alexa enabled: Yes |
| C-wire required? Yes, but a Power Extender Kit is included for systems without |
| Price: Check price |
| Our Review: ecobee3 lite Review |
ecobee3 |
| What's unique: Room sensors, HomeIQ reports |
| Amazon Alexa enabled: Yes |
| C-wire required? Yes, but a Power Extender Kit is included for systems without |
| Price: Check price |
| Our Review: ecobee3 Review |
Emerson Sensi |
| What's unique: Traditional programmable thermostat design with WiFi features |
| Amazon Alexa enabled: Yes |
| C-wire required? |
| Price: Check price |
| Our Review: Sensi review |
Nest Learning Thermostat |
| What's unique: Simplicity of use, earn "Leaf" badges |
| Amazon Alexa enabled: Yes |
| C-wire required? It's complicated |
| Price: Check price |
| Our Review: Nest Review |
Ecobee Smart Si |
| What's unique: Budget friendly, data reports |
| Amazon Alexa enabled: No |
| C-wire required? Yes, separate Power Extender Kit is available for systems without a c-wire |
| Price: Check price |
| Our Review: Smart Si Review |
ecobee Smart Thermostat |
| What's unique: Data reports, granular control |
| Amazon Alexa enabled: No |
| C-wire required? Yes, separate Power Extender Kit is available for systems without a c-wire |
| Price: Check price |
| Our Review: Ecobee Review |
Honeywell Wi-Fi Smart Thermostat |
| What's unique: Email alerts, full-featured touch screen |
| Amazon Alexa enabled: Yes |
| C-wire required? Yes |
| Price: Check price |
| Our Review: Honeywell Wi-Fi Review |
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