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 Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat is a strong contender in the smart thermostat category, particularly for those looking for versatility and convenience. Its compatibility with major smart home systems like Alexa, Google Home, and SmartThings allows for seamless integration into your existing setup. The customizable color touchscreen is a standout feature, making it visually appealing and easy to navigate. Users can easily adjust settings and view important information like local weather and indoor humidity levels at a glance.

Programmability is another key strength; it offers flexible scheduling options that can be tailored to your daily routine or adjusted based on energy pricing. This can lead to notable energy savings, a crucial aspect for budget-conscious consumers mindful of their environmental impact. The intelligent alerts for maintenance reminders, such as air filter changes, enhance user experience by keeping you informed about your system's health.

However, there are a few points to consider. While installation is generally straightforward, some users may find it a bit challenging if they lack experience with home wiring or HVAC systems. Additionally, being a Wi-Fi thermostat, it relies on a stable internet connection to utilize its smart features fully. Any connectivity issues could hinder performance, especially when you're counting on alerts or remote access.

The price point may be higher than traditional thermostats, which could deter budget-conscious buyers who aren't interested in smart features. Nevertheless, those who appreciate advanced capabilities and energy management will likely find the investment worthwhile. The Honeywell Home RTH9585WF1004 is best suited for homeowners or small businesses looking to enhance their heating and cooling systems with modern technology and energy efficiency.

The Amazon Smart Thermostat offers a user-friendly upgrade from traditional thermostats, especially for those who want to manage their home's temperature with smart technology. It works well with most 24V HVAC systems but requires a C-wire or a separate power adapter, which is important to check before purchasing. Installation is guided through the Alexa app, making it accessible for DIY users, although some basic tools might be needed.

This thermostat supports programmability with up to seven daily schedule periods, allowing you to tailor heating and cooling to your lifestyle. Smart features include compatibility with Alexa and Ring devices, and the ability to use certain Echo devices as temperature sensors to fix hot or cold spots in your home. Alexa’s “Hunches” feature learns your routine to automatically adjust temperatures when you’re away or asleep, adding convenience and potential energy savings.

The user interface is simple, with three touch buttons on the device and voice control available through Alexa-enabled devices. However, it lacks a built-in microphone, so voice commands require another Alexa device. Control is possible remotely via the Alexa app, letting you adjust settings on the go. ENERGY STAR certification supports its energy-saving features, with estimated savings of about $50 per year on energy bills. Amazon also provides information on local rebates, which can add extra savings. Note that it only connects to 2.4 GHz Wi-Fi networks and is not compatible with high-voltage systems like electric baseboard heating.

This thermostat is ideal for users seeking an affordable, reliable smart thermostat with solid Alexa integration and basic programmability. It works best in homes with compatible HVAC systems and for those comfortable using Alexa devices or apps for control.