Snag an Ecobee Smart Thermostat for $40 off during Prime Day (expired)

Selling for 28-percent off during Amazon’s Prime Day extravaganza, the Ecobee Smart Thermostat with Voice Control was our top pick in the smart thermostat category until—you guessed it—the next-generation Ecobee came to market. Update: This deal expired after Prime Day. Both models have Alexa onboard, and both support remote room sensors that can help eliminate hot