Emerson Sensi Pro
Score: 83/100
ecobee3 Lite
Score: 82/100Rankings
The Emerson Sensi Pro is a Wi-Fi and Bluetooth-enabled thermostat with a touchscreen LCD, offering broad HVAC compatibility and robust smart-home integration. Its main drawbacks are the need for a C-wire for certain features and lack of battery backup, limiting installation flexibility. Ideal for homeowners seeking extensive features and a long warranty.
The Ecobee3 Lite offers a budget-friendly 3.5-inch touchscreen, built-in sensors and broad HomeKit, Alexa and Google Assistant support. Its reliance on a C-wire or power extender kit and modest display resolution may deter users seeking higher-end visuals. Best suited for cost-conscious owners of 24 V HVAC systems who value multi-room sensing.
| Attribute | | |
|---|---|---|
5 yearsbest | 3 years | |
— | 3.5 inchbest | |
| ↓ lower better | 0.336 kgbest | 2.268 kg |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
General(2) | ||
HVAC Compatibility | Single/multi-stage gas, oil, electric, heat pump (up to 4H/2C), dual fuel, boiler, cool‑only, AC with AUX heat | Approximately 95% of 24V systems |
Warranty (years) | 5 years | 3 years |
Connectivity(1) | ||
Smart Home Integration | Amazon Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings | Siri, Google Assistant, Samsung SmartThings, IFTTT, Alexa |
Power & Installation(1) | ||
Power Source | Battery, Hardwire/Common, Power Sharing | Hardwired 24V |
Build & Design(2) | ||
Device Weight (kg) | 0.336 kg | 2.268 kg |
Device Dimensions (H×W×D) (mm) | 25.4×149.35×95.25 mm mm | 102.9x102.9x21.4 mm mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers and editors commend the Sensi Touch 2 for its straightforward, app-driven installation, robust smart-home ecosystem compatibility, and contractor-focused features such as batch registration and keypad lockout. Its energy-saving functions and 5-year warranty further bolster its reputation, earning it an Editors' Choice accolade. The primary criticisms revolve around the need for a C-wire for HomeKit and the absence of battery backup.
Consumers generally praise the thermostat's remote access, intuitive scheduling, and useful humidity and temperature alerts. Recurring complaints focus on the requirement for a C-wire in some setups and the limitation to 2.4 GHz Wi-Fi, as well as the lack of battery backup during power outages.
Industry analysts and the manufacturer emphasize the Ecobee3 Lite's strong energy-efficiency credentials, easy installation with the optional Power Extender Kit, and its broad smart-home ecosystem support, positioning it as a cost-effective solution that can still achieve notable savings of around 23 % per year.
