10 Best Wifi Thermostats 2025 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 smart wifi-enabled thermostat designed to make your home more energy-efficient and comfortable. One of its standout features is its compatibility with both 2.4 GHz and 5 GHz Wi-Fi networks, making it versatile for various home setups. The thermostat is ENERGY STAR certified, which suggests it’s efficient at saving energy. You can also check its compatibility with your home system using the Nest Compatibility Checker, which ensures you're making a suitable purchase.

Note that some systems may require a C wire or other power accessories for proper installation. Installation is generally user-friendly, especially since it’s designed to work without a C wire in most homes, but users with specific systems might find it a bit more complex. The thermostat has a sleek design and a backlit LCD display, although the small 2-inch screen size might not be ideal for everyone. The user interface is managed through the Google Home app, which allows you to create an energy-saving schedule and control the thermostat from your phone, laptop, or tablet. The app also features a Savings Finder to suggest further energy-saving tweaks.

Remote access and smart home integration are strong points, especially with compatibility across Google Assistant, Amazon Alexa, and other Matter-certified voice assistants. On the downside, the lack of a lock feature may be a concern for some users looking for added security. The built-in HVAC monitoring provides alerts for maintenance issues, aiding in keeping your systems in good shape. The product is lightweight and comes with necessary mounting components, making physical installation straightforward. It also includes a one-year warranty. For those seeking a balance of energy efficiency, ease of use, and smart home integration, the Google Nest Thermostat is a solid choice.

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.