*This article was originally written October 26, 2020 and was updated March 5, 2025 with current information.
If you’re in the market for a smart thermostat that can help you save money over time, your best path to saving cash is to begin by searching for smart thermostat rebates and money-off incentives. (For links on where to find them, jump to the bottom of this article.)
Found a rebate that works in your zip code? Your next step is to check the device’s compatibility with your HVAC system and to research the features you’re in search of to determine which device offers the best-fit bang for your buck. Not all smart thermostats are built (or priced) the same, so be sure to check for the features you think you’ll use to ensure you’re not overspending on a device.
Smart Thermostat Features to Consider
Will it work with your current HVAC system? Do you have the C-wire that many smart thermostats require? Smart thermostat listings will tell you whether a c-wire is required for use. If you don’t have a c-wire, check out this popular c-wire adaptor that works with Nest, Honeywell, Ecobee, Sensi, and other smart thermostats.
Room sensors: Room sensors allow users to place sensors in specific rooms of the house to ensure the temperature is balanced throughout the home. Many sensors can measure temperature and occupancy.
Energy Usage Reports: These reports offer the ability to track how much energy you’re using and can help you make adjustments that offer immediate savings. Some smart thermostats, like the Nest, will offer additional money-saving tips in their reports.
Alerts and Reminders: A notification that alerts users to an unexpected change in temperature can be especially useful if your smart thermostat is installed at a location you’re not always around to monitor directly.
Geofencing: Geofencing technology allows the smart thermostat to keep track of your smartphone’s location (e.g. your location) and adjust the temperature accordingly.
Sleek interface design – the “cool” factor: The Nest thermostat was the first to provide the “wow” factor to a utilitarian object like a thermostat. Many smart thermostats are following in Nest’s footsteps by offering their own take on high-tech design.
Adaptive recovery: This feature gives a smart thermostat the ability to learn how long it will take to achieve the desired temperature and will cause the thermostat to adjust run time accordingly.
The Best Smart Thermostats
These smart thermostats are regularly awarded top honors across many smart home tech blogs.
Google Nest Learning Thermostat, 4th Generation
Honeywell Home T9 WiFi Smart Thermostat
Smart Thermostat Rebates and Incentives
Many of the popular smart thermostats such as Nest, Honeywell, Emerson Sensi, Ecobee, Lux Geo, and Johnson Controls Glas will qualify for cashback rebates or money-off purchase incentives.
To locate available incentives by zip code, check the Energy Star Rebate Finder.
Best Buy also offers an easy-to-use rebate finder for appliances and smart home devices. You’ll find a link to valid rebates that you can use even if you don’t purchase the item at Best Buy.
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