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Compare two products
Pick any two products from our reviews and see specifications, price, buyer ratings and our scores in one table.
Product A
Product B
| Side by side |  |  |
|---|---|---|
| Buyer rating | 4.3 | 4.4 |
| Price | $209.99 | $79.99 |
| Our score | 8.2/10 | 7.6/10 |
| Buyer ratings | 4,177 ratings | 23,051 ratings |
| Brand | ecobee | Sensi |
| Best for | Homes needing targeted multi-room temperature monitoring | DIY installers wanting a familiar thermostat design |
| Build quality | 8.5/10 | — |
| HVAC compatibility | 9.0/10 | — |
| Platform integration | 8.0/10 | — |
| Local autonomy | 7.2/10 | — |
| Overall value | 8.3/10 | — |
| Installation flexibility | — | 8.8/10 |
| Hardware ergonomics | — | 7.4/10 |
| Smart home integration | — | 8.0/10 |
| Energy tracking | — | 7.6/10 |
| Protocol longevity | — | 6.2/10 |
| Controller Type | Amazon Alexa, Android, Apple HomeKit, Google Assistant, iOS | Amazon Alexa, Apple HomeKit, Google Assistant, SmartThings, Vera |
| Additional Features | Amazon Alexa, Siri, Wired Smart Thermostat | Data Privacy, Easy DIY Install, Energy Savings, Filter Indicator, Programmable |
| Specific Uses For Product | Air Conditioner, Boiler, Dehumidifier, Electric Baseboard Heater, Furnace, Heat Pump, Humidifier | Air Conditioner, Boiler, Furnace, Heat Pump |
| Temperature Control Type | Cooling | Programmable, Smart/Remote |
| Connectivity Technology | Bluetooth | Wi-Fi |
| Power Source | Corded Electric | Battery or C-wire |
| Voltage | 24 volts | 24 volts_of_alternating_current |
| Display Type | LCD | LED |
| Control Type | Touchpad Control | — |
| Control Method | App | — |
| Connectivity Protocol | Wi-Fi | — |
| Mounting Type | Wall Mount | — |
| Number of Batteries | 1 Lithium Ion batteries required. (included) | — |
| Color | Black | — |
| Shape | Round | — |
| Product Style | Smart Thermostat Premium | — |
| Dimensions | — | 5.875" x 3.75" x 1.0" |
| Wi-Fi Connectivity | — | 2.4 GHz |
| Remote Access | — | ✓ |
| Usage Reports | — | ✓ |
| Our verdict | The ecobee Smart Thermostat Premium sits at the higher end of the category, combining an external remote sensor with onboard Siri and Alexa access. While HomeKit compatibility offers a degree of local command, broader operation remains tied to standard Wi-Fi and manufacturer cloud services rather than emerging local standards like Thread. Buyers should confirm HVAC wire compatibility before purchase and decide whether integrated microphones belong on their wall. | The Sensi ST55 keeps a traditional thermostat form factor while adding Wi-Fi control and Alexa support for $79.99. It earns a reliable 4.4 rating, often praised for straightforward DIY installation compared to modern puck-style designs. The classic display is utilitarian, avoiding touchscreens in favor of physical buttons. |
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Prices and buyer ratings are captured snapshots. A dash means the detail was not recorded, not that a feature is absent. Editorial scores are research assessments, not laboratory measurements.
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