Nest Thermostat vs Sensi Smart thermostat

Overall the Sensi Smart thermostat takes it on value: a lower price, a higher owner rating, a 3-year warranty and a large 5-inch display. The Nest Thermostat is the more feature-rich unit, with occupancy sensing, temperature alerts, dual-band Wi-Fi and a color screen.

The Nest Thermostat is the sensor-and-alerts device, adding occupancy, motion and ambient-light sensing plus temperature alerts, while the Sensi Smart thermostat keeps things simpler with temperature and humidity sensing on a monochrome 5-inch display, but wins on price and warranty length.

Yes, both the Nest Thermostat and the Sensi Smart thermostat work with Apple HomeKit. They also both cover Google Home and Alexa; the Nest adds IFTTT, while the Sensi adds Home Assistant.

The Sensi Smart thermostat is covered for 3 years and offers on-device voice control, where the Nest Thermostat carries a one-year warranty. Both can be controlled by voice through connected assistants like Alexa and Google Home.

Buyers who want occupancy and ambient-light sensing, temperature alerts, dual-band Wi-Fi and a color display, and value those extras over the lower price and longer warranty of the Sensi.

Cost-conscious buyers who want a well-rated, HomeKit-compatible thermostat with a big readable display, temperature and humidity sensing and a 3-year warranty, and do not need occupancy sensing or alerts.