10 Best Thermostats 2025 in the United States

The ecobee Smart Thermostat Premium is designed to work well with typical home heating and cooling systems, making it compatible with most furnaces. It includes a helpful 2-pack of SmartSensors that detect temperature in different rooms, helping to reduce hot or cold spots and keep your home more comfortable. This thermostat is highly programmable and can be controlled remotely using voice commands with Alexa or Siri, or through your smartphone, offering convenient smart features. It also stands out with a built-in air quality monitor that alerts you to poor indoor air quality and suggests ways to improve it, including reminders for furnace filter changes.

Energy saving is a key strength here, as the device is ENERGY STAR certified and claims to save up to 26% on heating and cooling costs by optimizing your home's temperature. Installation requires hardwiring to your home's electrical system, which might be a bit challenging if you’re not comfortable with DIY projects, but many users find it worth the effort for the long-term benefits.

The inclusion of door and window sensors adds a layer of security by monitoring entry, exit, and movement, which can be integrated with ecobee’s Smart Security system for customized alerts. The built-in speaker and clear LCD display make daily interaction easy and user-friendly. Some features like smart security alerts require an additional subscription, which could add to the cost. This thermostat represents a strong choice for homeowners looking to combine comfort, energy savings, and smart home integration. Its advanced sensors and air quality monitoring provide extra value beyond basic temperature control, though installation might require professional help, and some security features come at an extra cost.

The Google Nest Learning Thermostat (4th Gen) is a smart thermostat designed to help you save energy and keep your home comfortable with minimal effort. It works with most 24V heating and cooling systems, including gas, electric, and heat pumps, often without needing a C wire, which makes installation easier for many homes. You can control it easily from your phone using the Google Home app, or by voice commands through Alexa, Siri, or Google Assistant, making it convenient to adjust the temperature even when you’re away.

One of its standout features is the learning algorithm that adapts to your schedule and preferences, helping reduce energy use without you having to constantly change settings. The included Nest Temperature Sensor lets you manage temperatures in different rooms, which is great for balancing hot and cold spots in your home. The display is larger and clearer than previous versions, with adjustable brightness and the ability to show useful info like the weather. Energy-saving functions like Adaptive Eco mode and natural heating and cooling adjustments help optimize your system based on outside temperature and sunlight, potentially lowering your heating bills by around 12% and cooling bills by 15%. Installation is fairly straightforward for those comfortable with basic DIY, and it integrates smoothly into modern smart home setups thanks to Matter compatibility.

Some users might find installation challenging without prior experience or professional help. Also, the polished gold finish is stylish but may not suit all home decors. The thermostat requires a CR2 battery, which is included but will need occasional replacement. While many users appreciate the learning features, a few might prefer more manual control options. This thermostat is a great choice for homeowners looking to upgrade to a smart, energy-efficient system with strong compatibility and helpful automation, especially if you value remote control and smart home integration.

The Google Nest Thermostat is a popular smart thermostat designed for most homes, working with about 85% of heating and cooling systems. It’s ENERGY STAR certified, helping you save energy by automatically adjusting the temperature when you leave your house and allowing you to create custom schedules through the Google Home app. You can control it remotely from your phone or tablet, and it works with voice assistants like Google Assistant and Alexa, making it convenient to adjust the temperature hands-free. One helpful feature is HVAC monitoring, which alerts you if your heating or cooling system needs maintenance.

Installation is designed to be straightforward, usually taking around 30 minutes with all necessary parts included, though some systems may require a C wire or additional power accessory. The thermostat supports programmable schedules and can also prioritize cleaner or cheaper energy usage through Nest Renew if available in your area. On the downside, it requires Wi-Fi for full smart functionality, and voice control needs a compatible smart device. While it’s easy to use, some users might find setting up schedules or connecting to smart home platforms a bit challenging initially.

The device runs on two AAA batteries included in the box and is compact and stylish with a clear display. This makes the Nest Thermostat a great choice for those seeking a smart, energy-efficient thermostat that’s fairly easy to install and offers helpful features for saving energy, especially if you are already using or plan to use Google’s smart home ecosystem.