(PCMag/Amazon)
Updated September 21: The weather's changing, and keeping your home heating connected to a 20th-century thermostat isn't cutting the mustard anymore, especially with energy costs rising. If your power bills are higher and higher because of constant adjustments, it's time to install a smart thermostat. These devices temperature sensors coupled with adaptive algorithms to adjust your furnace, boiler, heat pump, or other HVAC system, lowering your power costs and maintaining an ideal climate. They couldn't be simpler to install and will start reducing your energy bills as soon as you power them on.
PCMag has put all of the leading smart thermostats through detailed testing, including connecting them up to our home HVAC systems. Each unit is evaluated on how efficient it is, how easy it is to install, and any standout features it offers. You'll save money on your first bill, especially when you factor in these discounts we found on five top-rated units from the top smart home brands.
Google Nest Thermostat
Google Nest Learning Thermostat
Ecobee Smart Thermostat Enhanced
Sensi Smart Thermostat
Honeywell Home X7S Smart Wi-Fi Programmable Thermostat
Google Nest Smart Thermostat Deals
Google's entry-level smart thermostat received an "Excellent" rating in our 2020 review, with praise going to its breezy installation and full toolset, including integration with Google and Amazon smart home systems. All of the basic features you need are here for a little over a hundred bucks, including robust scheduling and energy monitoring reports that also suggest ways to improve efficiency and note potential issues with your HVAC system. It doesn't have the advanced AI-powered adaptability of more expensive models, but if you can live without those, it's a decent deal at $30 off.
For something a little more feature-rich, the most recent Google Nest Learning Thermostat has a $62 discount at Walmart right now. In our review, contributing editor John Delaney gave it an "Excellent" rating thanks to its "large display, pleasing aesthetics, and remote room sensing." He also highlighted that the ability to spread out thermometers across multiple locations refined its operation and made it even more efficient. This model also added even more smart home system interoperability, including the popular Matter standard. Ambient light, temperature, humidity, and motion sensors give you tons of variables to build heating routines around, and it also works with humidifier and dehumidifier add-ons to many systems.
Ecobee Smart Thermostat Deal
Ecobee produces a trio of smart thermostats at different price points, and its budget model, the Smart Thermostat Essential, checks all the boxes while cutting the fat. In our review, we gave this one an Editors' Choice award. It has a large, attractive color touchscreen, compatibility with Alexa, Google, and HomeKit smart home automation systems, and is very simple to use. Installation was a breeze, although it does require either a C-wire or a C-wire adapter to work properly. The free Ecobee app gives you a variety of control options, and we liked the robust energy reporting options. When paired with an Ecobee SmartSensor (sold separately), you can monitor motion and temperature in other rooms as well. While it's not the biggest discount, this one's a bargain at retail price anyways.
Ecobee's Smart Thermostat Enhanced is a solid piece of hardware that we gave an "Excellent" rating to in our review. This is one of the best all-weather thermostats on the market, with accurate temperature measurements and flexible algorithms to adjust your home's climate. It's extremely simple to get going, with ultra-simple installation and compatibility with a broad group of smart home automation platforms, and boasts extensive reporting tools. Amazon has a $10 price drop right now. Ecobee says that just hooking this unit up can deliver up to 26% per year reductions on heating and cooling costs, which will pay for itself quickly. If you want a slightly more premium option at a bargain price, this is the one to pick.
Honeywell Smart Thermostat Deal
Honeywell Home is one of the more experienced names in the HVAC business, and it produces good-quality smart thermostats that work like a charm. The X7S is a sleek model with a large, colorful touchscreen that you can customize to match your home decor. It supports a wide variety of integrations with other smart home devices either through the First Alert app or through protocols including Amazon Alexa, Google Assistant, Apple HomeKit, and Matter. Occupancy sensors, humidity tracking and other features make it a versatile choice, and a discount of nearly $50 is attractive. This unit does require a C-wire connection in your home, but if you don't have one, there's a coupon for a free adapter inside the package.
Sensi Smart Thermostat Deal
This older Sensi smart thermostat is a reliable piece of tech that still performs well. In our 2021 review, our expert praised its complement of useful features, including geofencing to reduce the ambient temperature when you're more than three miles from your home, lots of reports, including usage and weather, and support for multiple home automation platforms. Although the monochrome LCD screen isn't the slickest, it still delivers tons of useful information, and the unit supports voice control through Alexa and Google Assistant. Take 12% off right now at Amazon.
More Smart Thermostat Deals that Won't Burn Through Your Wallet
- Amazon Wi-Fi Smart Thermostat — $56.99 ($79.99) Save $23.00
- Google Nest Smart Home Thermostat (2020 Model, Snow) — $108.49 ($129.99) Save $21.50
- Emerson Sensi ST55 Wi-Fi Smart Thermostat — $101.89 ($129.99) Save $28.10
- Meross MTS300 Smart Wi-Fi Thermostat (C-Wire Required) — $58.99 ($99.99) Save $41.00
- Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat — $93.09 ($179.99) Save $86.90
- Get the Best Prices On Thermostats — Download Our Free Price Comparison Tool $0
About Our Expert
K. Thor Jensen is a writer and cartoonist living in the Pacific Northwest. He has contributed to dozens of prestigious outlets, including PCMag, Tested, Clickhole, and Newsweek. His second graphic novel, Cloud Stories, was released in 2017.
- The 5 Best Tech Deals From Hisense, Roborock, and Samsung for the Weekend Before Prime Day
- It's Almost Amazon Prime Big Deal Days, But Lenovo Has Deep Discounts Now
- The Best Movies to Watch on Netflix Right Now (Oct. 2-9, 2026)
- What's New to Watch on HBO Max the Week of Oct. 2, 2026
- What's New to Watch on Disney+ and Hulu the Week of Oct. 2, 2026
- More from K. Thor Jensen
