Home Slickdeals Costco Members: Ecobee3 WiFi Thermostat + 3 Room Sensors $170 +... Slickdeals Costco Members: Ecobee3 WiFi Thermostat + 3 Room Sensors $170 + Free Shipping By ARCOM - 22 November 2017 458 0 SHARE Facebook Twitter Go to the deal page: Costco Members: Ecobee3 WiFi Thermostat + 3 Room Sensors $170 + Free Shipping