10 Best Wifi Thermostats 2026 in the United States

The Amazon Smart Thermostat offers a straightforward way to upgrade from a traditional thermostat, especially for those who want to save energy and money. It works with most 24V HVAC systems but requires a C-wire or an additional power adapter, which is important to check before buying. Installation is guided through the Alexa app and is relatively simple, though some tools like a power drill might be needed. The user interface is basic with just three touch buttons on the device itself, but it is complemented by easy remote control via the Alexa app or voice commands through Alexa-enabled devices. This means you can adjust your home's temperature from anywhere, which is convenient.

It integrates well with Amazon's smart home ecosystem and supports temperature sensors from compatible Echo devices to better manage hot and cold spots. Energy-saving features are strong, as it is ENERGY STAR certified and uses Alexa’s smart learning to adjust temperatures automatically based on your routines. However, it doesn't have a built-in microphone, so voice control requires another Alexa device. The display is minimal and focused on simplicity rather than rich visuals.

It connects only to 2.4 GHz WiFi networks, which could be a limitation if your home primarily uses 5 GHz WiFi. If you’re already using Alexa or Ring devices, this thermostat fits nicely into that setup and is an affordable, energy-efficient choice. For those seeking a thermostat with a more advanced screen or broader WiFi compatibility, exploring other options may be worthwhile.

The Google Nest Thermostat is a user-friendly smart thermostat designed to help you save energy and maintain comfort in your home. It works well with most heating and cooling systems, though some setups may require an additional power accessory called a C wire. Installing it is straightforward for many homes, but checking compatibility beforehand is recommended. The thermostat’s interface is clean and easy to use, featuring a backlit LCD display and button controls. You can manage temperatures remotely from your smartphone, tablet, or computer, making it convenient if you’re away from home. It integrates smoothly with popular smart home platforms like Google Assistant, Alexa, and supports Matter-certified devices, allowing voice control for hands-free adjustments.

Energy-saving features are a strong point — it automatically lowers heating or cooling when you leave home to reduce waste, and the Savings Finder tool offers helpful tips to optimize your schedule. It also provides HVAC system monitoring, alerting you to potential issues before they become big problems. The display quality is decent, clear enough to read in most lighting, though it's simpler compared to some high-end, colorful touchscreens. One limitation is the lack of a lock feature, so anyone with app access can change settings. The thermostat runs on two AAA batteries, which usually last a long time but will need replacement eventually.

With a solid blend of smart features, ease of control, and energy efficiency, the Nest Thermostat is well suited for homeowners looking to make their heating and cooling smarter and more cost-effective without needing technical expertise.

The Google Nest Learning Thermostat (4th Gen) is a polished and smart choice for anyone looking to upgrade their home's heating and cooling control. It works with most common home HVAC systems without needing a C wire in many cases, which can simplify installation. The setup is mostly DIY-friendly, and the thermostat connects smoothly to Wi-Fi, letting you control it from the Google Home app or by voice through Alexa, Siri, or Google Assistant. One standout is its beautiful, large, and easy-to-read display that adjusts brightness automatically, making it simple to see the temperature info from across the room.

With the included Nest Temperature Sensor, you can manage temperatures in different rooms, helping eliminate hot or cold spots in your home. This model also learns your schedule and how outdoor conditions affect indoor temperature to optimize energy use, potentially saving about 12% on heating and 15% on cooling bills. Its new Adaptive Eco mode smartly keeps your home comfortable while maximizing savings when you're away. The thermostat supports Matter, allowing easy integration with a wide range of smart home devices.

Although it’s compatible with many systems, some very old or unusual HVAC setups might not work perfectly. Additionally, its price is higher than basic thermostats, making it a better fit for users who value smart features and energy savings. This thermostat excels in ease of use, smart automation, and smart home compatibility, making it a solid pick for those wanting a stylish, energy-efficient WiFi thermostat.