A smart ac thermostat automatically adjusts your heating and cooling systems to keep you comfortable and save you money. But these are not one-size-fits-all devices. The best model for someone who hopes to eke out every last BTU of efficiency and cost savings will be very different from a thermostat for someone who just wants everything to be as simple as possible. Thermostat Premium—our pick for the best smart thermostat—falls into the first category.
Before you buy, make sure the smart ac thermostat will work with your HVAC system. Most companies provide a compatibility checker on their websites.
Choose a ac thermostat that works with miniature remote temperature sensors to even out heating and cooling around your home.
Smart ac thermostats are set up with a smartphone app, but most models can also be controlled by voice, using Alexa, Apple HomeKit, or Google Assistant.
Enabling geolocation in a ac thermostat’s settings lets the device know when you are home or away, to automatically adjust your HVAC and save energy.