10 Best Digital Thermostats 2025 in the United States

The Google Nest Thermostat in Charcoal is a smart and programmable thermostat designed to help you save energy and stay comfortable. It stands out with its ENERGY STAR certification, ensuring it's energy-efficient. One of its biggest strengths is its versatile compatibility, working with most home systems without needing a C wire, although some specific setups might require one. You can easily check compatibility using Google's online tool before purchasing, which is very user-friendly.

The thermostat is highly programmable via the Google Home app on your smartphone, allowing you to create an energy-efficient schedule that can be adjusted remotely. This is great for families who want to manage their home's temperature from anywhere, whether on a phone, laptop, or tablet. The smart features are notable too; it automatically turns down when you leave to save energy and includes HVAC monitoring to keep an eye on your heating and cooling systems, sending alerts if something seems off. It also works with Google Assistant and other Matter-certified voice assistants, adding convenience with voice control.

The display, while small at 2 inches and using an LCD type, is backlit and provides clear visibility. In terms of installation, it's designed for wall mounting and includes all necessary components like mounting screws and a steel plate. However, some users might find the need for batteries (2 A batteries included) slightly inconvenient. The one-year warranty is standard but not particularly impressive. The Google Nest Thermostat is ideal for tech-savvy homeowners looking for an energy-efficient, smart solution to manage their home's temperature effectively.

The ecobee Smart Thermostat Enhanced is a feature-rich digital thermostat that's a strong contender for anyone looking to upgrade their home heating and cooling controls. It boasts compatibility with popular smart home platforms like Siri, Alexa, and Google Assistant, making it a versatile addition to any smart home setup. You can control it remotely through the ecobee app on your smartphone, tablet, or Apple Watch, which adds a significant convenience factor.

The thermostat is programmable and can automatically adjust the temperature based on whether you're home or away, and accounts for humidity levels to maintain comfort. It also promises up to 26% savings on heating and cooling costs, which is bolstered by its Energy Star certification. Installation is straightforward, taking most people less than 45 minutes, and it comes with a Power Extender Kit for homes without a C-wire. The display is easy to read and navigate, and the unit is designed to last for over a decade, being hardwired means you won't need to worry about replacing batteries.

However, the SmartSensor that allows for temperature readings in specific rooms is sold separately, which could be a downside if you want complete home monitoring out of the box. Also, while it is highly compatible with many HVAC systems, it's essential to verify that your specific system is supported. This thermostat could be a great fit for those looking to enhance their home's comfort and efficiency with smart technology.

The ecobee Smart Thermostat Premium stands out in the digital-thermostats category due to its extensive compatibility and smart features. It works with Siri, Alexa, and Google Assistant, making it highly versatile for varying smart home setups. Its programmability is top-notch, allowing users to save up to 26% annually on heating and cooling costs, which is further supported by its ENERGY STAR certification.

The included SmartSensor automatically adjusts temperatures in different rooms, ensuring comfort throughout the home. The built-in air quality monitor, smoke alarm detection, and alerts for possible break-ins add significant value, transforming this thermostat into a comprehensive home monitoring hub. The vibrant display and intuitive interface enhance user experience, making it easy to navigate and control settings.

Additionally, the thermostat's ability to act as a smart speaker for Siri or Alexa and play music through Spotify is a unique feature that integrates entertainment with utility. Installation is straightforward, especially with the included Power Extender Kit for homes without a C-wire, accommodating most 24VAC HVAC systems effortlessly. However, gaining access to some advanced features like door/window sensors and enhanced security alerts requires a subscription to the ecobee Smart Security plan, which may be an additional cost. Despite these minor drawbacks, the ecobee Smart Thermostat Premium is an excellent choice for those seeking an efficient, multi-functional, and smart home-compatible thermostat.