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 ecobee New Smart Thermostat Enhanced offers a range of features that cater to modern smart home needs. It is compatible with various HVAC systems, including furnaces, ACs, heat pumps, and more, making it versatile for different households. The thermostat is programmable and can be controlled via an app, allowing for adjustments from anywhere using a smartphone, tablet, or Apple Watch. With compatibility with Siri, Alexa, and Google Assistant, it integrates seamlessly into various smart home ecosystems.

One of the key strengths of this thermostat is its smart features that include temperature adjustments based on occupancy, preheating or precooling your home, and accounting for humidity to maintain comfort. Energy savings are significant, with the potential to save up to 26% on heating and cooling costs annually, due to its ENERGY STAR certification and smart adjustments. The user interface is designed to be simple and intuitive, with an LCD display and app control, making it user-friendly even for those who may not be tech-savvy.

Installation is made easy with included components and most users completing it in 45 minutes or less without professional help. However, the thermostat requires a c-wire, although a Power Extender Kit is included for systems without one. Additionally, while it is made from quality materials and designed to last, needing a hardwired connection might limit some flexibility in placement. Lastly, the SmartSensor, which can further enhance home temperature monitoring, is sold separately, which could be an additional cost for users looking for that feature.

The Honeywell Home Smart Color Wi-Fi Thermostat is a solid choice for anyone looking to modernize their heating and cooling system with smart features. It works well with most forced air systems, heat pumps, and hot water or steam heating, but it won’t work with electric baseboard heat, so it’s important to check your home’s setup first. It requires a C-wire, which means a continuous power source from your HVAC system, and if you don’t have one, you’ll need to add an adapter, making installation a bit more involved for some users.

This thermostat shines with its easy-to-use, customizable color touchscreen that lets you pick your favorite display color and view indoor/outdoor temperature alongside humidity and weather forecasts right on the screen. It supports flexible programming if you want to set schedules or simply use the smart features to adjust temperatures automatically. A big plus is its compatibility with popular smart home assistants like Amazon Alexa, Google Assistant, and Microsoft Cortana, letting you control your thermostat by voice or through an app from anywhere. The ENERGY STAR certification means it’s designed to help save energy, and it even offers perks like energy-saving rebates and utility demand response programs, which can lower your energy bills further.

One downside is that it’s not the simplest thermostat to install yourself if your wiring isn’t already compatible. Also, it doesn’t support certain heating systems such as line voltage or heating-only oil furnaces without a C-wire. This thermostat is best suited for homeowners with compatible HVAC systems who want smart, energy-efficient control with modern features and are comfortable doing or arranging a slightly technical installation.