
ecobee3 Lite
Score: 82/100
Mysa Smart Thermostat
Score: 74/100Rankings

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.

Mysa's Smart Thermostat V2 is a line-voltage Wi-Fi thermostat designed for electric baseboard and similar heaters, delivering up to 26% energy savings with precise temperature and humidity alerts. Its compatibility is limited to electric heating systems and it lacks battery backup and Bluetooth, restricting broader use cases. Perfect for homeowners upgrading electric heating with smart controls and zoning capabilities.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 0.28 °Cbest | |
3 yearsbest | 2 years | |
3.5 inchbest | — | |
| ↓ lower better | 2.268 kg | 0.51 kgbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(2) | ||
HVAC Compatibility | Approximately 95% of 24V systems | Electric baseboard, convector, radiant ceiling, self-contained hydronic baseboard |
Warranty (years) | 3 years | 2 years |
Connectivity(1) | ||
Smart Home Integration | Siri, Google Assistant, Samsung SmartThings, IFTTT, Alexa | Apple HomeKit, Amazon Alexa, Google Home |
Power & Installation(2) | ||
C‑Wire Requirement | true | false |
Power Source | Hardwired 24V | 120-240 V AC |
Build & Design(2) | ||
Device Weight (kg) | 2.268 kg | 0.51 kg |
Device Dimensions (H×W×D) (mm) | 102.9x102.9x21.4 mm mm | 129.5×88.9×20.3 mm mm |


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

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.

Professional reviewers consistently commend the Mysa V2 for its ease of installation, substantial energy-saving claims, and extensive smart-home integration, positioning it as the top choice for electric baseboard heating upgrades. The main criticisms focus on wiring requirements and the lack of support for low-voltage heating systems.
Direct consumer reviews are not present in the sourced data, but the product’s multi‑pack offerings and emphasis on family‑friendly app access suggest a positive reception among homeowners seeking whole‑home zoning and remote control.

