Look for models like the Ecobee that include a Power Extender Kit . 3. Compare Top Brands Google Nest Honeywell Home Interface Rotating dial Touchscreen Touch or Button Learning Automatic learning Schedule-based App-controlled Sensors Sold separately Often included Sold separately Ecosystem Google Home / Matter Apple HomeKit / Alexa Best Smart Thermostats 2026: Complete Buyer's Guide Home Auto Central
Amazon Smart Thermostat (simple, works great with Alexa). buy thermostat
Most smart thermostats require a blue "C" wire to provide constant power. Look for models like the Ecobee that include